ORCID Profile
0000-0001-5317-1637
Current Organisation
Curtin University
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Physical Chemistry (Incl. Structural) | Nanotechnology | Structural Chemistry and Spectroscopy | Nanoscale Characterisation | Structural Chemistry | Chemical Characterisation of Materials | Colloid and Surface Chemistry | Inorganic Chemistry | Electrochemistry | Nanomaterials | Plant Cell and Molecular Biology | Chemical Thermodynamics And Energetics | Nanotechnology | Condensed Matter Physics | Organic Chemical Synthesis | Colloid And Surface Chemistry | Ceramics | Microelectronics and Integrated Circuits | Photodetectors, Optical Sensors and Solar Cells | Electrochemistry | Immunological and Bioassay Methods | Artificial Intelligence and Image Processing | Alloy Materials | Toxicology (Incl. Clinical Toxicology) | Animal Neurobiology | Functional Materials | Pharmaceutical Sciences And Pharmacy | Compound Semiconductors | Resources Engineering and Extractive Metallurgy | Materials Engineering | Mineral Processing | Photonics, Optoelectronics and Optical Communications | Nonlinear Optics and Spectroscopy | Condensed Matter Physics—Structural Properties | Pharmacology and Pharmaceutical Sciences | Analytical Chemistry | Analytical Spectrometry | Solid State Chemistry | Biomaterials | Transition Metal Chemistry | Biomaterials | Environmental And Occupational Health And Safety | F-Block Chemistry | Process Metallurgy | Environmental Technologies | Chemical Engineering Not Elsewhere Classified | Other Instrumental Methods | Medical Biochemistry and Metabolomics not elsewhere classified | Industrial Chemistry | Supramolecular Chemistry | Theoretical And Computational Chemistry Not Elsewhere Classified | Cellular Nervous System | Surfaces and Structural Properties of Condensed Matter | Electronic and Magnetic Properties of Condensed Matter; Superconductivity | Molecular and Organic Electronics | Computer Vision | Intelligent Robotics
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in the Chemical Sciences | Expanding Knowledge in the Biological Sciences | Physical sciences | Expanding Knowledge in Technology | Chemical sciences | Integrated Circuits and Devices | Energy storage | Measurement standards and calibration services not elsewhere classified | Combined operations | Field crops | Industry | Emerging Defence Technologies | Neurodegenerative Disorders Related to Ageing | Occupational health (excl. economic development aspects) | Concentrating processes of other base metal ores | Fuel Cells (excl. Solid Oxide) | Alumina production | Ceramics, glass and industrial mineral products not elsewhere classified | Solid Oxide Fuel Cells | Treatments (e.g. chemicals, antibiotics) | Computer hardware and electronic equipment not elsewhere classified | Inorganic industrial chemicals | Organic industrial chemicals not classified elsewhere | Ceramics | Other | Gas—conversion to liquid fuels | Hydrogen Storage | Integrated systems | Expanding Knowledge in the Medical and Health Sciences | Biofuel (Biomass) Energy | First stage treatment of ores and minerals | Computer software and services not elsewhere classified | Diagnostic Methods | Expanding Knowledge in the Physical Sciences | Expanding Knowledge in Engineering |
Related Links
Publications
Self-inclusion of proline-functionalised calix[4]arene leads to hydrogelation
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1CC11286D
Abstract: Solution-phase and solid-state structural studies indicate that the remarkable hydrogelation properties of a proline-functionalised calix[4]arene emerge as a result of extended helical structures formed via inclusion of a proline moiety in a neighbouring calixarene cavity.
Structural variations in metal complexes of a tertiary α-hydroxyoxime
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4DT03393K
Abstract: A ligand based on commercial solvent extractant is found to support mono-, di-, and tri-nuclear coordination complexes.
Can macrocyclic phosphonate molecules inhibit barium sulfate crystallization?
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8CE01869C
Abstract: Macrocyclic compounds such as DOTP and NOTP are found to inhibit precipitation of barium sulfate just as potently as their non-cyclic counterparts depending on the ionisation state of the molecule.
Hydrated Lanthanoid Complexes of 5-(2′-Pyridyl)tetrazole Formed in the Presence of Dimethyl Sulfoxide
Publisher: CSIRO Publishing
Date: 2012
DOI: 10.1071/CH12031
Abstract: Reaction of DMSO solvates of lanthanoid nitrates or perchlorates with 5-(2′-pyridyl)tetrazole (pytz) and triethylamine in organic solvents resulted in the unexpected crystallization of hydrates, rather than DMSO solvates. This was confirmed by the structural characterization of [Eu(pytz)3(H2O)3]. Decreasing the metal:ligand ratio in the reaction mixture resulted in the crystallization of a complex salt formulated as [Y(pytz)2(H2O)4](pytz)·(Hpytz)·4H2O once again DMSO was absent from the product. Interestingly, the omission of base from one reaction resulted in the serendipitous crystallization of Hpytz in a zwitterionic form, unlike the neutral ligand structure reported previously.
Acid-amide calixarene ligands for uranyl and lanthanide ions: synthesis, structure, coordination and extraction studies
Publisher: Royal Society of Chemistry (RSC)
Date: 22-07-2002
DOI: 10.1039/B202442J
Enantioselective Inhibition of Human Papillomavirus L1 Pentamer Formation by Chiral‐Proline Modified Calix[4]arenes: Targeting the Protein Interface
Publisher: Wiley
Date: 16-11-2016
Abstract: Although current human papillomavirus (HPV) vaccines can protect well against infection, they are effective only for a limited number of subtypes. Coupled with the dilemma that no efficient prescription is currently clinically available for therapy, there is an urgent need to develop new anti‐HPV agents. In the present study l ‐ and d ‐Proline modified calix[4]arenes (Pro‐C4 A) were investigated to determine any differences in their effect on the assembly of HPV 16 L1 pentamer (L1‐p). The mechanism of action using model peptides was investigated by Matrix‐Assisted Laser Desorption/Ionization Time of Flight Mass Spectrometry (MALDI‐TOF‐MS) and Nuclear Magnetic Resonance (NMR) and revealed that the binding was targeting the basic residues at L1 interface. This was also well supported by the trypsin digestion experiments and molecular simulations performed on the full‐length L1. The large energy and morphology differences revealed by molecular simulations explain the binding disparity of l ‐ and d ‐Pro‐C4 A to L1, and consequently the selective inhibition of them on L1‐p formation. The present study opens a way to develop enantioselective and cost‐effective inhibitors for L1‐p formation, which might be used as a new kind of anti‐HPV agent and could be extended to other viruses based on similar mechanisms.
Toward a Fundamental Understanding of Molecular Recognition: A Synthetic and Computational Study of Morphological Control of Ca3Al2(OH)12
Publisher: American Chemical Society (ACS)
Date: 16-05-2002
DOI: 10.1021/JP015528K
Enhanced Near-Infrared Emission from Eight-Coordinate vs Nine-Coordinate YbIII Complexes Using 2-(5-Methylpyridin-2-yl)-8-hydroxyquinoline
Publisher: American Chemical Society (ACS)
Date: 30-10-2020
Barium sulfate crystallization dependence on upper rim calix[4]arene functional groups
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C1CE06083J
Investigation of the structure and magnetism in lanthanide β-triketonate tetranuclear assemblies
Publisher: Informa UK Limited
Date: 05-05-2016
Influence of the Para-Substituent in Lanthanoid Complexes of Bistetrazole Substituted Calix[4]arenes
Publisher: American Chemical Society (ACS)
Date: 06-08-2019
DOI: 10.26434/CHEMRXIV.9255209.V1
Abstract: 5,11,17,23-Tetra-tert-butyl-25,27-dihydroxy-26,28-bis(tetrazole-5-ylmethoxy)calix[4]arene has been reported to form remarkable Ln19 and Ln12 elongated clusters, upon addition of aqueous ammonium carboxylates. The impact of the para substituent on lanthanoid cluster formation has been studied by synthesising two new bis-tetrazole calixarenes, with p -H, and p -allyl substituents. Solution phase dynamic light scattering measurements of the reaction mixtures indicated that clusters are not formed with the p -H and p -allyl derivatives, in contrast with the behaviour of the t- butyl analogue. Lanthanoid complexes of the p -H and p -allyl calixarenes were characterised by single crystal X-ray diffraction, and were found to form mononuclear complexes, linked to form a one-dimensional coordination polymer for the p -allyl system. All of the complexes were isolated as ammonium salts, with ammonium cation included in the calixarene cavity in most cases. It is concluded that the nature of the para substituent has a profound impact on the lanthanoid cluster formation process, and derivatives with more subtle structural changes will be required to determine if additional lanthanoid “bottlebrush” clusters can be isolated.
Cluster control in oligouranyl complexes of p-t-butylcalix[8]arene
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0DT00667J
Abstract: Formation of uranyl ion complexes of p-t-butylcalix[8]arene by reaction of the calixarene with [UO(2)(dmso)(5)](2+) in the presence of various bases leads to the crystallisation of solids with interestingly different stoichiometry, involving both di- and tri-uranate oligomers bound to the calixarene in anionic species. In all, the calixarene hexa-anion is present in a virtually identical conformation, suggesting that conformational preferences of the ligand must be a major factor controlling the form of the bound oxo-metal complex. Hydrogen bonding to the anions does not appear to be prominent even in the presence of protonated amines and this may explain the formation of some remarkable cation/solvent/simple anion clusters found within the lattices.
(η4-Tetrafluorobenzobarrelene)-η1-((tri-4-fluorophenyl)phosphine)-η1-(2-phenylphenyl)rhodium(I): A Catalyst for the Living Polymerization of Phenylacetylenes
Publisher: American Chemical Society (ACS)
Date: 23-06-2021
Upper-rim acidic peptidocalixarenes as crystal growth modifiers
Publisher: Informa UK Limited
Date: 26-03-2014
Crystallisation of α-lactose monohydrate from dimethyl sulfoxide (DMSO) solutions: influence of β-lactose
Publisher: Elsevier BV
Date: 09-1999
Time to onset of gastrointestinal bleeding in the SUP‐ICU trial: A pre‐planned substudy
Publisher: Wiley
Date: 11-09-2019
DOI: 10.1111/AAS.13459
Abstract: The aetiology and risk factors for clinically important gastrointestinal bleeding (CIB) in adult ICU patients may differ according to the onset of CIB, which could affect the balance between benefits and harms of stress ulcer prophylaxis (SUP). We assessed the time to CIB in the Stress Ulcer Prophylaxis in the Intensive Care Unit (SUP-ICU) trial. We assessed if associations between baseline characteristics including allocation to SUP and CIB changed during time in the ICU, specifically in the later (after day 2) compared to the earlier (first 2 days) period, using Cox models adjusted for SAPS II and allocation to SUP. Additionally, we described baseline characteristics and CIB episodes stratified by earlier/later/no CIB and 90-day mortality status. Clinically important gastrointestinal bleeding occurred in 110/3291 (3.3%) patients after a median of 6 (interquartile range 2-13) days 25.5% of the episodes occurred early. Higher SAPS II was consistently associated with increased risk of CIB (hazard ratio (HR) 1.03, 95% confidence interval (CI) 1.01-1.05 in the earlier period vs HR 1.02, 95% CI 1.01-1.03 in the later period P = .37) university hospital admission was associated with decreased risk of earlier CIB (HR 0.30, 95% CI 0.14-0.63) this significantly increased in the later period (to HR 0.85, 95% CI 0.53-1.37 P = .02). Patients with later compared to earlier CIB received more transfusions and had more diagnostic/therapeutic procedures for CIB. Clinically important gastrointestinal bleeding mostly occurred more than 2 days after randomization. University hospital admission was associated with significantly decreased risk of CIB in the earlier period only.
Unconventional Lanthanoid Complexes Supported by Retro-Claisen Condensation Products of β-Triketonates
Publisher: American Chemical Society (ACS)
Date: 06-06-2018
DOI: 10.26434/CHEMRXIV.6448253.V1
Abstract: β -Triketonates have been recently used as chelating ligands for lanthanoid ions presenting unique structures varying from assemblies to polymers. Despite their novel complexation behaviour little is known about the stability of these molecules. Indeed, two ex les of possible in situ retro-Claisen condensation reactions have been reported previously. To better understand this possible decomposition pathway, four new β -triketones were synthesised. Complexation reactions were performed for each of these molecules using different alkaline bases in alcoholic media, aiming to isolate the potentially varying ligands present in solution. The X-ray diffraction studies revealed the formation of structures where one, two, or three of the molecules involved in the retro-Claisen condensation reaction were linked to the lanthanoid centres.
Lanthanoid Complexes Supported by Retro-Claisen Condensation Products of β-Triketonates
Publisher: American Chemical Society (ACS)
Date: 29-06-2018
DOI: 10.26434/CHEMRXIV.6448253.V2
Abstract: β -Triketonates have been recently used as chelating ligands for lanthanoid ions presenting unique structures varying from assemblies to polymers. Despite their novel complexation behaviour little is known about the stability of these molecules. Indeed, two ex les of possible in situ retro-Claisen condensation reactions have been reported previously. To better understand this possible decomposition pathway, four new β -triketones were synthesised. Complexation reactions were performed for each of these molecules using different alkaline bases in alcoholic media, aiming to isolate the potentially varying ligands present in solution. The X-ray diffraction studies revealed the formation of structures where one, two, or three of the molecules involved in the retro-Claisen condensation reaction were linked to the lanthanoid centres.
Structural characterisation and photophysical properties of lanthanoid complexes of a tetra-amide functionalised calix[4]arene
Publisher: Informa UK Limited
Date: 29-01-2016
Lanthanoid Complexes Supported by Retro-Claisen Condensation Products of β-Triketonates
Publisher: American Chemical Society (ACS)
Date: 03-09-2018
DOI: 10.26434/CHEMRXIV.6448253.V3
Abstract: β -Triketonates have been recently used as chelating ligands for lanthanoid ions, presenting unique structures varying from polynuclear assemblies to polymers. In an effort to overcome low solubility of the complexes of tribenzoylmethane, four β -triketones with higher lipophilicity were synthesised. Complexation reactions were performed for each of these molecules using different alkaline bases in alcoholic media. X-ray diffraction studies suggested that the ligands were undergoing decomposition under the reaction conditions. This is proposed to be caused by in situ retro-Claisen condensation reactions, consistent with two ex les that have been reported previously. The lability of the lanthanoid cations in the presence of a varying set of potential ligands gave rise to structures where one, two, or three of the molecules involved in the retro-Claisen condensationreaction were linked to the lanthanoid centres. These results, along with measurements of ligand decomposition in the presence of base alone, suggest that using solvents of lower polarity will mimimise the impact of the retro-Claisen condensation in these complexes.
Lanthanoid Complexes Supported by Retro-Claisen Condensation Products of β-Triketonates
Publisher: American Chemical Society (ACS)
Date: 22-10-2018
DOI: 10.26434/CHEMRXIV.6448253.V4
Abstract: β -Triketonates have been recently used as chelating ligands for lanthanoid ions, presenting unique structures varying from polynuclear assemblies to polymers. In an effort to overcome low solubility of the complexes of tribenzoylmethane, four β -triketones with higher lipophilicity were synthesised. Complexation reactions were performed for each of these molecules using different alkaline bases in alcoholic media. X-ray diffraction studies suggested that the ligands were undergoing decomposition under the reaction conditions. This is proposed to be caused by in situ retro-Claisen condensation reactions, consistent with two ex les that have been reported previously. The lability of the lanthanoid cations in the presence of a varying set of potential ligands gave rise to structures where one, two, or three of the molecules involved in the retro-Claisen condensationreaction were linked to the lanthanoid centres. These results, along with measurements of ligand decomposition in the presence of base alone, suggest that using solvents of lower polarity will mimimise the impact of the retro-Claisen condensation in these complexes.
Rh(I)(2,5-norbornadiene)(biphenyl)(tris(4-fluorophenyl)phosphine): Synthesis, Characterization, and Application as an Initiator in the Stereoregular (Co)Polymerization of Phenylacetylenes
Publisher: American Chemical Society (ACS)
Date: 24-12-2019
DOI: 10.1021/ACSMACROLETT.9B00975
Abstract: The synthesis of the Rh(I)-aryl complex, Rh(I)(nbd)(BiPh)(P(4-FC
Pyridine-functionalised C4 symmetric resorcinarenes
Publisher: Elsevier BV
Date: 10-2007
Cation recognition by new diester- and diamide-calix[4]arenediquinones and a diamide-benzo-15-crown-5-calix[4]arene
Publisher: Springer Science and Business Media LLC
Date: 1994
DOI: 10.1007/BF00708992
Fully Ir(iii ) tetrazolate soft salts: the road to white-emitting ion pairs
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5DT04958J
Abstract: The first ex les of anionic Ir( iii ) bis-tetrazolate complexes and their combination with a cationic Ir( iii )tetrazole derivative forming “fully tetrazolate” Ir( iii ) based soft salts as O 2 -sensitive white emitters are described herein.
Complementary Approaches to Imaging Subcellular Lipid Architectures in Live Bacteria Using Phosphorescent Iridium Complexes and Raman Spectroscopy
Publisher: Wiley
Date: 11-07-2019
Abstract: A family of three neutral iridium(III) tetrazolato complexes are investigated as bacterial imaging agents. The complexes offer a facile tuning of the emission colour from green (520 nm) to red (600 nm) in aqueous media, while keeping the excitation wavelength unchanged. The three complexes do not inhibit the bacterial growth of Bacillus Cereus, used as a model in this study, and exhibit extremely fast cellular uptake. After a minute incubation time, the nontoxic complexes show subcellular localisation in spherical structures identified as lipid vacuoles. Confocal Raman imaging has been exploited for the first time on live bacteria, to provide direct and label-free mapping of the lipid-enriched organelles within B. cereus, complementing the use of luminescent probes. Examination of the Raman spectra not only confirmed the presence of lipophilic inclusions in B. cereus but offered additional information about their chemical composition, suggesting that the lipid vacuoles may contain polyhydroxybutyrate (PHB).
The effect of processing parameters on particle size in ammonia-induced precipitation of zirconyl chloride under industrially relevant conditions
Publisher: Elsevier BV
Date: 04-2009
Lanthanoid Complexation by a Tris‐Tetrazole‐Functionalised Calix[4]arene
Publisher: Wiley
Date: 28-10-2016
Impact of Tunable Oligophosphonates on Barium Sulfate Crystallization
Publisher: American Chemical Society (ACS)
Date: 17-02-2014
DOI: 10.1021/CG401897N
Rhodium(I)‐α‐Phenylvinylfluorenyl Complexes: Synthesis, Characterization, and Evaluation as Initiators in the Stereospecific Polymerization of Phenylacetylene
Publisher: Wiley
Date: 08-01-2019
Macrocyclic gelators
Publisher: Informa UK Limited
Date: 09-09-2013
Mechanisms of Dye Incorporation into Potassium Sulfate: Computational and Experimental Studies
Publisher: American Chemical Society (ACS)
Date: 08-06-2007
DOI: 10.1021/JP071177J
Investigation of the Photophysical Properties of a Eu3+ Coordination Polymer Bearing an α-Nitrile Substituted β-Diketonate Ligand via Emission and Ultrafast Transient Absorption Spectroscopy
Publisher: CSIRO Publishing
Date: 2015
DOI: 10.1071/CH15253
Abstract: Reaction of the β-diketone ligand, 2-cyano-1,3-phenyl-1,3-propandione (LH), with hydrated EuCl3 in the presence of 1,10-phenanthroline (Phen), results in the crystallisation of a one-dimensional Eu3+ coordination polymer of formulation [Eu(Phen)(L)3]∞, formed by coordination of the nitrile group of an O,O′-bound ligand to a neighbouring metal centre. An investigation of the metal-centred emission of the polymer, both in the solid state and solution, revealed red emission characterised by relatively long-lived excited state lifetimes and high intrinsic quantum yields. However, analysis of the overall quantum yield and sensitisation efficiency reveals that ultrafast processes in the ligand potentially inhibit Eu3+ sensitisation. Further investigations into these processes using transient absorption spectroscopy suggest that substitution at the α-C position may significantly decrease sensitisation via the antenna effect.
Delamination and re-assembly of surfactant-containing Li/Al layered double hydroxidesElectronic supplementary information (ESI) available: Diffraction patterns. See http://www.rsc.org/suppdata/jm/b3/b
Publisher: Royal Society of Chemistry (RSC)
Date: 2004
DOI: 10.1039/B314288D
Bio-Inspired Calix[4]arene Additives for Crystal Growth Modification of Inorganic Materials
Publisher: American Chemical Society (ACS)
Date: 12-10-2005
DOI: 10.1021/CG050322K
Lanthanoid complexes supported by retro-Claisen condensation products of β-triketonates
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8DT03585G
Abstract: Structures varying from polynuclear assemblies to coordination polymers are formed when β-triketonate ligands undergo retro-Claisen condensation reactions in the presence of lanthanoids.
Structural diversity in the first metal complexes of 2,5-dicarboxamidopyrroles and 2,5-dicarbothioamidopyrroles
Publisher: Royal Society of Chemistry (RSC)
Date: 2008
DOI: 10.1039/B802506A
Abstract: Metal complexes of 2,5-dicarboxamidopyrroles and 2,5-dicarbothioamidopyrroles have been structurally characterised for the first time, complementing the significant amount of work that has been reported for the analogous pyridine ligands. N,N'-Bis(3,5-dinitrophenyl)-3,4-diphenyl-1H-pyrrole-2,5-dicarboxamide forms octahedral bis(tridentate) complexes with cobalt(III) and nickel(II), where the ligands are bound to the metal centres through deprotonated pyrrole and amide N atoms. N,N'-Dibutyl-3,4-diphenyl-1H-pyrrole-2,5-dicarboxthioamide and N,N'-diphenyl-3,4-diphenyl-1H-pyrrole-2,5-dicarboxthioamide also form bis(tridentate) cobalt complexes but are only deprotonated at the pyrrole N atom, the remainder of the coordination sphere comprising the thioamide S atoms. The dibutyl derivative was isolated as a Co(II) complex, whereas the diphenyl system deposited a Co(III) complex. In contrast, N,N'-dibutyl-3,4-dichloro-1H-pyrrole-2,5-dicarboxamide was found to act as a bidentate ligand, in an octahedral cobalt(II) complex comprising of two bidentate pyrrole ligands, and two aqua ligands. Synthesis of N,N-bis(pyridin-2-ylmethyl)-3,4-diphenyl-1H-pyrrole-2,5-carboxamide gave a pyrrole ligand with increased denticity. Reaction with cobalt(II) chloride resulted in the isolation of a dinuclear helicate complex. The ligand was found to have undergone addition of a methoxy group to one of the linking methylene carbons, presumably as a result of the oxidative addition of solvent methanol.
A platinum(II)-napthalimide probe for sub-cellular imaging of bacteria
Publisher: American Chemical Society (ACS)
Date: 18-02-2009
DOI: 10.26434/CHEMRXIV.8299274.V2
Abstract: There is a lack of molecular probes for imaging bacteria, in comparison to the array of such tools available for the imaging of mammalian cells. A platinum(II)-naphthalimide molecule has been developed as a small molecule probe for bacterial imaging, designed to have the potential for correlative imaging. The naphthalimide moiety acts as a luminescent probe for super-resolution microscopy, functioning independently of the platinum(II) centre which enabled visualisation of the complex with ion nanoscopy. Structured illumination microscopy (SIM) imaging on live Bacillus cereus confirmed the suitability of the probe for super-resolution microscopy. NanoSIMS analysis was used to monitor the uptake of the platinum(II) complex within the bacteria and proved the multimodal action of the probe. The successful combination of these two probe moieties introduces a platform that could lead to a versatile range of correlative probes for bacteria.
A Platinum(II) Based Correlative Probe for Bacteria
Publisher: American Chemical Society (ACS)
Date: 20-06-2019
DOI: 10.26434/CHEMRXIV.8299274.V1
Abstract: There is a lack of molecular probes for imaging bacteria, in comparison to the array of such tools available for the imaging of mammalian cells. This is especially so for correlative probes, which are proving to be powerful tools for enhancing the imaging of live cells. In this work a platinum(II)-naphthalimide molecule has been developed to extend small molecule correlative probes to bacterial imaging. The probe was designed to exploit the naphthalimide moiety as a luminescent probe for super-resolution microscopy, with the platinum(II) centre enabling visualisation of the complex with ion nanoscopy. Photophysical characterisation and theoretical studies confirmed that the emission properties of the naphthalimide are not altered by the platinum(II) centre. Structured illumination microscopy (SIM) imaging on live Bacillus cereus revealed that the platinum(II) centre does not change the sub-cellular localisation of the naphthalimide, and confirmed the suitability of the probe for super-resolution microscopy. NanoSIMS analysis of the s le was used to monitor the uptake of the platinum(II) complex within the bacteria and proved the correlative action of the probe. The successful combination of these two probe moieties with no perturbation of their in idual detection introduces a platform for a versatile range of new correlative probes for bacteria.
Crystal growth mechanisms of the (010) face of α-lactose monohydrate crystals
Publisher: Elsevier BV
Date: 04-2009
One-pot Selective Formylation and Claisen Rearrangement on Calix[4]arenes
Publisher: Informa UK Limited
Date: 04-2006
Barium Sulfate Crystallization in the Presence of Variable Chain Length Aminomethylenetetraphosphonates and Cations (Na+ or Zn2+)
Publisher: American Chemical Society (ACS)
Date: 03-01-2007
DOI: 10.1021/CG0604172
Structures and properties of solvated and unsolvated isopropyl functionalised calix[4]arenes
Publisher: Informa UK Limited
Date: 19-08-2009
Calixarenes as aryloxides: oligonuclear europium(iii) derivatives
Publisher: Royal Society of Chemistry (RSC)
Date: 2003
DOI: 10.1039/B305041F
Cation solvation in the solid state – temperature-dependent crystal structures in some metal perchlorates solvated by dimethylsulfoxide
Publisher: Elsevier BV
Date: 06-2004
The extraction of thallium(I) and silver(I) ions with 1,3-alternate calix[4]arene derivatives
Publisher: Springer Science and Business Media LLC
Date: 08-07-2011
Thermal annealing behaviour and gel to crystal transition of a low molecular weight hydrogelator
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6SM02431A
Abstract: The thermal annealing behaviour of an electrolyte-triggered calixarene hydrogelator is found to depend strongly on the specific metal chloride used. While the lithium chloride gel showed typical gel-sol transitions as a function of temperature, the magnesium chloride gel was found to repeatedly strengthen with heat-cool cycles. Structural investigations using small-angle neutron scattering, and scanning probe microscopy, suggest that the annealing behaviour is associated with a change in morphology of the fibrous structures supporting the gel. On prolonged standing at room temperature, the magnesium chloride gel underwent a gel-crystal transition, with the collapsing gel accompanied by the deposition of crystals of a magnesium complex of the proline-functionalised calix[4]arene gelator.
Lanthanoid/Alkali Metal β‐Triketonate Assemblies: A Robust Platform for Efficient NIR Emitters
Publisher: Wiley
Date: 29-10-2015
Abstract: The reaction of hydrated lanthanoid chlorides with tribenzoylmethane and an alkali metal hydroxide consistently resulted in the crystallization of neutral tetranuclear assemblies with the general formula [Ln(Ae⋅HOEt)(L)4 ]2 (Ln=Eu(3+) , Er(3+) , Yb(3+) Ae=Na(+) , K(+) , Rb(+) ). Analysis of the crystal structures of these species revealed a coordination geometry that varied from a slightly distorted square antiprism to a slightly distorted triangular dodecahedron, with the specific geometrical shape being dependent on the degree of lattice solvation and identity of the alkali metal. The near-infrared (NIR)-emitting assemblies of Yb(3+) and Er(3+) showed remarkably efficient emission, characterized by significantly longer excited-state lifetimes (τobs ≈37-47 μs for Yb(3+) and τobs ≈4-6 μs for Er(3+) ) when compared with the broader family of lanthanoid β-diketonate species, even in the case of perfluorination of the ligands. The Eu(3+) assemblies show bright red emission and a luminescence performance (τobs ≈0.5 ms, ${{\\Phi}{{{\\rm L}\\hfill \\atop {\\rm Ln}\\hfill}}}$≈35-37 %, ηsens ≈68-70 %) more akin to the β-diketonate species. The results highlight that the β-triketonate ligand offers a tunable and facile system for the preparation of efficient NIR emitters without the need for more complicated perfluorination or deuteration synthetic strategies.
Lanthanide ion complexes of the calixarenes. Part 4. Double inclusion by p-t-butylcalix[4]arene (H4L). Crystal structures of [Eu2(HL)2(dmf)4].7dmf (dmf = dimethylformamide) and H4L.dmso (dmso = dimeth
Publisher: Royal Society of Chemistry (RSC)
Date: 1989
DOI: 10.1039/DT9890002217
Silver(i ), gold(i ) and palladium(ii ) complexes of a NHC-pincer ligand with an aminotriazine core: a comparison with pyridyl analogues
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5DT04213E
Abstract: The twisted vs. linear conformation of newly synthesised silver and gold complexes of chelating C,N,C diethylaminotriazinyl-bridged bis(NHC) pincer ligands have been rationalised by computational studies.
Lanthanide ions as calcium substitutes: a structural comparison of europium and calcium complexes of a ditopic calixarene
Publisher: Royal Society of Chemistry (RSC)
Date: 1991
DOI: 10.1039/DT9910002153
The many roles of mellitic acid during barium sulfate crystallization
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4FD00211C
Abstract: The various roles of mellitic acid during barium sulfate crystallization from nucleation to mesocrystal formation are explored and elucidated.
Comparison of the effect growth inhibitors have on an isostructural pair of salts
Publisher: Royal Society of Chemistry (RSC)
Date: 2005
DOI: 10.1039/B501965F
The impact of the lanthanide contraction on the structure of complexes of a calix[4]arene trisamide
Publisher: Springer Science and Business Media LLC
Date: 07-07-2009
The effect of phosphonate-based growth modifiers on the morphology of hematite nanoparticles formed via acid hydrolysis of ferric chloride solutions
Publisher: Royal Society of Chemistry (RSC)
Date: 2003
DOI: 10.1039/B302911E
Luminescent lanthanoid complexes of a tetrazole-functionalised calix[4]arene
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2DT12246D
Abstract: p-t-Butylcalix[4]arene functionalised at the lower rim with two tetrazole moieties is found to be a useful receptor for lanthanoid cations. The luminescence of the resulting complexes can be controlled by addition of base, with emission achieved in the visible and infrared regions.
Understanding the mechanism by which nitrilotriacetic acid interacts with precipitating barium sulfate
Publisher: Royal Society of Chemistry (RSC)
Date: 2006
DOI: 10.1039/B608302A
Anomalous behaviour within a systematic series of barium sulfate growth modifiers
Publisher: Royal Society of Chemistry (RSC)
Date: 2001
DOI: 10.1039/B106729J
Difference Hirshfeld fingerprint plots: a tool for studying polymorphs
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6CE02535H
Analyzing the Relation between Structure and Aggregation Induced Emission (AIE) Properties of Iridium(III) Complexes through Modification of Non‐Chromophoric Ancillary Ligands
Publisher: Wiley
Date: 13-11-2018
Effect of Benzoic Acids on Barite and Calcite Precipitation
Publisher: American Chemical Society (ACS)
Date: 11-10-2006
DOI: 10.1021/CG060186Z
Investigating vaterite phase stabilisation by a tetrazole molecule during calcium carbonate crystallisation
Publisher: Elsevier BV
Date: 07-2012
Effect of Solution Silicate on the Precipitation of Barium Sulfate
Publisher: American Chemical Society (ACS)
Date: 05-2012
DOI: 10.1021/CG300263F
Incorporation of Cyano Transition Metal Complexes in KCl Crystals—Experimental and Computational Studies
Publisher: CSIRO Publishing
Date: 2003
DOI: 10.1071/CH02260
Abstract: Experimental and computational studies of the incorporation of hexacyanoferrate(II), hexacyanocobaltate(III), and hexacyanoferrate(III) into potassium chloride crystals are described. The experimental results showed that the extent of incorporation follows the trend hexacyanoferrate(II) » hexacyanoferrate(III) hexacyanocobaltate(III). Computational modelling produced replacement energies that match the experimental trend. The calculated geometry of the incorporated complexes was also found to match well with previous experimental results.
Synthesis and co-ordination chemistry of a novel bis(benzo crown ether) substituted calix[4]arene that can simultaneously complex cations and anions
Publisher: Royal Society of Chemistry (RSC)
Date: 1995
DOI: 10.1039/DT9950003117
Ammonium redox-responsive receptors containing multiple ferrocene and quinone redox-active centres attached to di- and tri-aza crown ether macrocycles
Publisher: Royal Society of Chemistry (RSC)
Date: 1993
DOI: 10.1039/DT9930002107
Structure illumination microscopy imaging of lipid vesicles in live bacteria with naphthalimide-appended organometallic complexes
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1AN00363A
Abstract: Staining bacteria is made more informative with a probe that enables imaging using super-resolution microscopy, and ion nanoscopy.
Alfred Werner revisited: Some subtleties of complex ion synthesis and isomerism
Publisher: Elsevier BV
Date: 02-2005
A “plug-and-play” approach to the preparation of transparent luminescent hybrid materials based on poly(methyl methacrylate), a calix[4]arene cross-linking agent, and terbium ions
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0CC05570K
Abstract: A novel methodology to prepare transparent luminescent hybrid materials is reported. Using a calixarene ionophore as a PMMA cross-linker avoids problems, such as phase segregation, and produces a polymer monolith that can be loaded with the metal ion required for luminescence post-synthesis. This approach is versatile and will simplify the production of such materials.
Crystallographic Determination of Three Ni-α-Hydroxyoxime-Carboxylic Acid Synergist Complexes
Publisher: Informa UK Limited
Date: 29-10-2010
Studies of lead(II) complexes of substituted calix[4]diquinones: the remarkable self-assembly of a novel redox-active 3D channel network
Publisher: Royal Society of Chemistry (RSC)
Date: 2000
DOI: 10.1039/B007061K
Tetrazoles: a new class of compound for crystallization modification
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0CE00263A
Front Cover: Analyzing the Relation between Structure and Aggregation Induced Emission (AIE) Properties of Iridium(III) Complexes through Modification of Non‐Chromophoric Ancillary Ligands (Eur. J. In
Publisher: Wiley
Date: 27-12-2018
Synthesis and structural studies of a lanthanide complex of a calix[4]arene tris-amide
Publisher: Elsevier BV
Date: 02-2005
Analyzing the Relation between Structure and Aggregation Induced Emission (AIE) Properties of Iridium(III) Complexes through Modification of Non‐Chromophoric Ancillary Ligands
Publisher: Wiley
Date: 27-12-2018
Manganese–calcium clusters supported by calixarenes
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4DT02952F
Abstract: An investigation inspired by the structure of the oxygen-evolving complex of photosystem II has resulted in the isolation and structural characterization of the first ex les of Mn/Ca clusters supported by a calixarene ligand.
Photophysical Investigation of near Infrared Emitting Lanthanoid Complexes Incorporating Tris(2-Naphthoyl)methane as a New Antenna Ligand
Publisher: American Chemical Society (ACS)
Date: 22-01-2019
DOI: 10.26434/CHEMRXIV.7611188.V1
Abstract: A conjugated β -triketone, tris(2-naphthoyl)methane ( tnm H), has been synthesized and successfully utilized as an antenna moiety for sensitization of the trivalent lanthanoids Eu 3+ , Sm 3+ , Yb 3+ and Nd 3+ , in an isomorphous series of mononuclear complexes formulated as [Ln( tnm ) 3 (DMSO) 2 ] (Ln 3+ = Nd 3+ , Sm 3+ , Eu 3+ , Gd 3+ and Yb 3+ ). The photophysical properties of the materials were characterized as comprehensively as possible, with overall quantum yields, intrinsic quantum yields based on calculated radiative decays, and sensitization efficiencies reported. This investigation improves understanding of the sensitization processes occurring in the near-infrared (NIR) region systems in particular, where quantitative data is currently scarce. In fact, the [Yb( tnm ) 3 (DMSO) 2 ] and its deuterated analogue, [Yb( tnm ) 3 ( d 6 - DMSO) 2 ], present high values of overall quantum yield of 4% and 6%, respectively, which makes them useful and readily accessible references for future investigation of NIR-emitting systems.
Syntheses, structural studies and solution properties of iron complexes of some amide-substituted calixarenes
Publisher: Royal Society of Chemistry (RSC)
Date: 27-09-2001
DOI: 10.1039/B104963C
Ionophoric properties of a tetra-tetrazole functionalised calix[4]arene
Publisher: Informa UK Limited
Date: 23-10-2015
Structure, derivatisation, and metal complexation of p-cyclohexylcalix[4]arene
Publisher: Informa UK Limited
Date: 03-06-2021
Lanthanoid pyridyl-β-diketonate ‘triangles’. New examples of single molecule toroics
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0DT02855J
Abstract: Trinuclear lanthanoid clusters have been synthesised and investigated as toroidal spin systems.
A lanthanum picrate complex of a 1,2-bisamide substituted calix[4]arene
Publisher: Springer Science and Business Media LLC
Date: 20-01-2015
An azobenzene-based photoswitchable crystal growth modifier
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6CE02514E
Abstract: An azobenzene derivative reversibly switches to a less effective crystal growth modifier of calcite when irradiated by UV light.
Lanthanoid “Bottlebrush” Clusters: Remarkably Elongated Metal–Oxo Core Structures with Controllable Lengths
Publisher: American Chemical Society (ACS)
Date: 14-10-2014
DOI: 10.1021/JA506677H
Abstract: Large metal-oxo clusters consistently assume spherical or regular polyhedral morphologies rather than high-aspect-ratio structures. Access to elongated core structures has now been achieved by the reaction of lanthanoid salts with a tetrazole-functionalized calixarene in the presence of a simple carboxylate co-ligand. The resulting Ln19 and Ln12 clusters are constructed from apex-fused Ln5O6 trigonal bipyramids and are formed consistently under a range of reaction conditions and reagent ratios. Altering the carboxylate co-ligand structure reliably controls the cluster length, giving access to a new class of rod-like clusters of variable length.
Linking Additive Structures to Nanoparticle Properties
Publisher: Trans Tech Publications, Ltd.
Date: 2005
DOI: 10.4028/WWW.SCIENTIFIC.NET/JMNM.23.51
Abstract: The effects of a series of polyphosphonate and poly-carboxylate additives have been investigated in the crystallization of various inorganic salts. Systematic variation of the additive structure has been used to provide insight into the dominant factors in additive-crystal interactions. The results obtained for barium sulfate and hematite (α-Fe2O3) show that the morphological effects do not necessarily follow the trend one might expect on the basis of the structural features of the additives. Molecular modeling, coupled with in-situ AFM imaging is being used to develop an approach that will allow more informed systematic design of crystal growth modifiers.
Energy transfer between Eu3+ and Nd3+ in near-infrared emitting β-triketonate coordination polymers
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8DT02499E
Abstract: Mixed coordination polymers containing Eu 3+ and Nd 3+ cations display energy forward and back migration between Eu 3+ and Nd 3+ , resulting in dual red and near-infrared emission.
Morphological control of Ca3Al2(OH)12
Publisher: Elsevier BV
Date: 2002
Rod-shaped barium sulfate particles from a completely inorganic system
Publisher: Elsevier BV
Date: 04-2011
Influence of the para‐Substituent in Lanthanoid Complexes of Bis‐Tetrazole‐Substituted Calix[4]arenes
Publisher: Wiley
Date: 07-11-2019
Abstract: 5,11,17,23‐Tetra‐ tert ‐butyl‐25,27‐dihydroxy‐26,28‐bis(tetrazole‐5‐ylmethoxy)calix[4]arene has been reported to form remarkable Ln19 and Ln12 elongated clusters, upon addition of aqueous ammonium carboxylates. The impact of the para substituent on lanthanoid cluster formation has been studied by synthesising two new bis‐tetrazole calixarenes, with p ‐H, and p ‐allyl substituents. Solution phase dynamic light scattering measurements of the reaction mixtures indicated that clusters are not formed with the p ‐H and p ‐allyl derivatives, in contrast with the behaviour of the tert ‐butyl analogue. Lanthanoid complexes of the p ‐H and p ‐allyl calixarenes were characterised by single‐crystal X‐ray diffraction, and were found to form mononuclear complexes, linked to form a one‐dimensional coordination polymer for the p ‐allyl system. All of the complexes were isolated as ammonium salts, with ammonium cation included in the calixarene cavity in most cases. It is concluded that the nature of the para substituent has a profound impact on the lanthanoid cluster formation process, and derivatives with more subtle structural changes will be required to determine if additional lanthanoid “bottlebrush” clusters can be isolated.
Actinide coordination chemistry – a unique example of a homoleptic complex of nine-coordinate thorium(IV)
Publisher: Elsevier BV
Date: 06-2004
New polyaza and polyammonium ferrocene macrocyclic ligands that complex and electrochemically recognise transition metal cations and phosphate anions in water
Publisher: Royal Society of Chemistry (RSC)
Date: 1993
DOI: 10.1039/C39930001046
Lanthanide picrate complexes and picric acid adduct of a calix[4]arene diamide. Syntheses and structures of [Tm(LH–2)A], [Ce(LH–2)(MeOH)2A]·HA, [PrLA3] and
Publisher: Royal Society of Chemistry (RSC)
Date: 1995
DOI: 10.1039/DT9950003455
Investigation of growth rate dispersion in lactose crystallisation by AFM
Publisher: Elsevier BV
Date: 09-2014
Industrial precipitation of yttrium chloride and zirconyl chloride: Effect of pH on ceramic properties for yttria partially stabilised zirconia
Publisher: Elsevier BV
Date: 07-2009
Controlling crystal growth with modifiers
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/B918849E
Versatile cation complexation by a calix[4]arene tetraamide (L). Synthesis and crystal structure of [ML][ClO4]2·nMeCN (M = FeII, NiII, CuII, Zn
Publisher:
Royal Society of Chemistry (RSC)
Date:
1995
DOI:
10.1039/DT9950001273
Publisher: Royal Society of Chemistry (RSC)
Date: 1995
DOI: 10.1039/DT9950001273
New bis(ferrocenecarbonyl)- and bis(ferrocenyl)-appended diazatetrathia mixed-donor macrocyclic ligands and their copper-(II) and -(I) complexes
Publisher: Royal Society of Chemistry (RSC)
Date: 1991
DOI: 10.1039/DT9910002485
Variations on a Cage Theme: Some Complexes of Bicyclic Polyamines as Supramolecular Synthons
Publisher: CSIRO Publishing
Date: 2009
DOI: 10.1071/CH09356
Abstract: Dedication: One of Alan Sargeson’s great abilities was to seek out knowledge on topics of which he was not the master from those people with the expertise. This led occasionally to publications with a ‘cricket team’ of authors but with a rich brew of information, often international. Alan also insisted that all authors were equal since, without any one, the paper would not be what it was. Hence, he endeavoured to pursue the policy, difficult to maintain over a period where an obsession with absurdities such as the order of authors and point-scoring based on meaningless publication indices became so important in the maintenance of research, of listing authors simply in alphabetical order. In describing work begun while he was still with us, we have attempted to adhere to his principles. Analysis of a body of crystallographic information concerning metal(ii) and metal(iii) complexes of macrobicyclic hexamine ligands and some of their derivatives provides evidence for the action of a variety of intermolecular forces within the lattices. Hydrogen bonding is universal and its forms depend strongly upon the oxidation state and the particular nature of the metal ion bound to the macrobicycle. The introduction of both aliphatic and aromatic substituents leads to lattices in which these substituents associate, although, in the case of aromatic substituents, this is not necessarily a consequence of ‘π-stacking’, despite the fact that the aromatic ring planes form parallel arrays. At least in the case of CoIII, stable enantiomers of the complexes can be obtained, and in {Δ-(+)589-[Co{(NH3)(CH3)sar}]}2Cl2(C6(CO2)6)·26H2O (sar = 3,6,10,13,16,19-hexa-azabicyclo[6.6.6]icosane), the benzene hexacarboxylate anion adopts a chiral conformation in the presence of the optically active cation.
Blue emitting C-2-symmetrical dibenzothiazolyl substituted pyrrole, furan and thiophene
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TC00760J
Energy Transfer Between Eu3+ and Nd3+ in Near-Infrared Emitting β-Triketonate Coordination Polymers
Publisher: American Chemical Society (ACS)
Date: 12-06-2018
DOI: 10.26434/CHEMRXIV.6008294.V2
Abstract: Isomorphous β -triketonate-based lanthanoid polymers containing tris(4-methylbenzoyl)methanide ( mtbm ) and Rb + with formula,{[Ln(Rb)( mtbm ) 4 ] 2 } n (Ln = Eu 3+ and Nd 3+ ) have been synthesised and structurally characterised. The photophysical properties for the Nd 3+ complex presented long lifetimes and relatively high quantum yields in comparison with analogous β -diketonate complexes. Mixed lanthanoid complexes were also formed and their luminescence properties studied, with effective sensitisation of the 4 F 3/2 of Nd 3+ via the 5 D 0 of Eu 3+ , which is to the best of our knowledge the first ex le of Eu 3+ to Nd 3+ sensitisation in a coordination complex or polymer.
Energy Transfer Between Eu3+ and Nd3+ in Near-Infrared Emitting β-Triketonate Coordination Polymers
Publisher: American Chemical Society (ACS)
Date: 17-07-2018
DOI: 10.26434/CHEMRXIV.6008294.V3
Abstract: Isomorphous β -triketonate-based lanthanoid polymers containing tris(4-methylbenzoyl)methanide ( mtbm ) and Rb + with formula,{[Ln(Rb)( mtbm ) 4 ] 2 } n (Ln = Eu 3+ and Nd 3+ ) have been synthesised and structurally characterised. The photophysical properties for the Nd 3+ complex presented long lifetimes and relatively high quantum yields in comparison with analogous β -diketonate complexes. Mixed lanthanoid complexes were also formed and their luminescence properties studied, with effective sensitisation of the 4 F 3/2 of Nd 3+ via the 5 D 0 of Eu 3+ , which is to the best of our knowledge the first ex le of Eu 3+ to Nd 3+ sensitisation in a coordination complex or polymer.
Structures of potassium encapsulated within the 1,3-alternate conformation of calix[4]arenes
Publisher: Royal Society of Chemistry (RSC)
Date: 1994
DOI: 10.1039/DT9940003479
Recyclable calix[4]arene–lanthanoid luminescent hybrid materials with color-tuning and color-switching properties
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3DT33059A
Abstract: Inorganic-organic hybrid materials combine the properties of both components providing functionality with a wide range of potential applications. Phase segregation of the inorganic and organic components is a common challenge in these systems, which is overcome here by copolymerizing a metal-free calixarene ionophore and methyl methacrylate. A lanthanoid ion is then added using a swelling-deswelling procedure. The resulting luminescent hybrid materials can be made to emit any required color, including white light, by loading with an appropriate mixture of lanthanoids. The gradation of the emitted color can also be finely adjusted by changing the excitation wavelength. The polymer monolith can be recycled to emit a different color by swelling with a solution containing a different lanthanoid ion. This methodology is flexible and has the potential to be extended to many different ionophores and polymer matrices.
Ammonia-induced precipitation of zirconyl chloride and zirconyl–yttrium chloride solutions under industrially relevant conditions
Publisher: Elsevier BV
Date: 2009
Phosphonate additives do not always inhibit crystallization
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0CE00338G
Lanthanoid Coordination with a Tetrazole-Substituted Calix[4]diquinone and Calix[4]dihydroquinone
Publisher: American Chemical Society (ACS)
Date: 10-04-2019
DOI: 10.26434/CHEMRXIV.7970879.V1
Abstract: The tetrazole-functionalised calixdiquinone 5,17-di-tert-butyl-26,28-bis-(tetrazol-5-ylmethoxy)- calix[4]-25,27-diquinone Q was synthesised by chemical oxidation of the bis-tetrazole calix[4]arene precursor using PbO2/HClO4. The single crystal X-ray structure determination of Q confirmed the structure and showed binding of a water molecule in the solid state. Chemical reduction of Q to the dihydroquinone QR was achieved using N,N-diethylhydroxylamine. Comparison of the solution phase photophysical properties of Q or QR in the presence of terbium ions showed significant excitation only with QR, suggesting redox switching of the photophysical response may be possible with this or similar receptors.
Proline-functionalised calix[4]arene: an anion-triggered hydrogelator
Publisher: Royal Society of Chemistry (RSC)
Date: 2008
DOI: 10.1039/B807248E
Abstract: A water-soluble, chiral calix[4]arene has been found to form hydrogels when triggered by the presence of specific anions, with efficacy linked to the Hofmeister series the gel properties are modified by the associated cations, and gelation can be reversibly switched off by increasing pH.
Investigating hydrogel formation using in situ variable-temperature scanning probe microscopy
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5SC02196K
Abstract: The assembly and disassembly of fibres formed by a low molecular weight hydrogelator are imaged at high resolution.
A brief review ofCn-symmetric calixarenes and resorcinarenes
Publisher: Informa UK Limited
Date: 2010
Probing the effect of β-triketonates in visible and NIR emitting lanthanoid complexes
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8DT00945G
Abstract: Investigating the effect of the third ketone arm on the photophysics of visible and NIR emitting lanthanoid β-triketonate complexes.
In situ investigation of growth rates and growth rate dispersion of α-lactose monohydrate crystals
Publisher: Elsevier BV
Date: 02-2009
Deprotonation of Large Calixarenes – Cation Binding and Conformations
Publisher: CSIRO Publishing
Date: 2016
DOI: 10.1071/CH15761
Abstract: Single crystal X-ray studies of p-t-butylcalix[10]arene·2dmso·7H2O (1) and [NMe4][p-t-butylcalix[9]arene-H]·2dmso·H2O (2), provide new data on these large macrocycles and their conformations, that of 2 being the first where an encapsulated [NMe4]+ cation is present, while 1 contains the neutral ligand. Both were obtained as crystalline products of the reactions of the calixarenes with tetramethylammonium hydroxide after prolonged standing. The structure of [NEt4][calix[4]arene-H], in which the cation approaches inclusion in the shallow cone of the anion, is also defined and compared with various other alkylammonium derivatives of calixarenes as well as that of p-t-butylcalix[9]arene.
Luminescent Lanthanoid Calixarene Complexes and Materials
Publisher: MDPI AG
Date: 28-11-2017
DOI: 10.3390/MA10121369
Abstract: This review aims to provide an overview of recent ex les of lanthanoid-calixarene complexes incorporated into light-emitting materials. Background information on the antenna effect and early work on lanthanoid complexes on calixarenes is provided to set the context. Classes of materials discussed include polymers, nanoparticles, and metal clusters.
Photophysical investigation of near infrared emitting lanthanoid complexes incorporating tris(2-naphthoyl)methane as a new antenna ligand
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8DT04749A
Abstract: Study of a series of lanthanoid complexes reveals that ancillary ligands play a significant role in their photophysical properties.
The interaction of EDTA with barium sulfate
Publisher: Elsevier BV
Date: 12-2007
DOI: 10.1016/J.JCIS.2007.09.005
Abstract: Ethylenediaminetetraacetic acid (EDTA) is a known complexing agent that interacts with a host of cations. In this paper, various techniques are used to elucidate the mechanism of interaction between EDTA and barium sulfate surfaces. It is shown that complexation with metal ions is not sufficient to explain the inhibition of barite crystallization but that other processes such as chemisorption must also occur. EDTA is shown to always adsorb as the mono-protonated species - suggesting that the molecule is able to lose a proton when it adsorbs at lower pH. Molecular modelling shows that the interaction of the surface barium ions with the carboxylate group is an important one. Finally, in situ turbidity measurements provide information about the mechanism of nucleation/growth modification. It is found that the EDTA molecule inhibits barium sulfate nucleation and that this could be its primary means of inhibiting precipitation of barium sulfate.
Industrial precipitation of zirconyl chloride: The effect of pH and solution concentration on calcination of zirconia
Publisher: Elsevier BV
Date: 08-2009
A calixarene-based ion-selective electrode for thallium(I) detection
Publisher: Elsevier BV
Date: 08-2014
DOI: 10.1016/J.ACA.2014.08.046
Abstract: Three new calixarene Tl(+) ionophores have been utilized in Tl(+) ion-selective electrodes (ISEs) yielding Nernstian response in the concentration range of 10(-2)-10(-6)M TlNO3 with a non-optimized filling solution in a conventional liquid contact ISE configuration. The complex formation constants (logβIL) for two of the calixarene derivatives with thallium(I) (i.e. 6.44 and 5.85) were measured using the sandwich membrane technique, with the other ionophore immeasurable due to eventual precipitation of the ionophore during these long-term experiments. Furthermore, the unbiased selectivity coefficients for these ionophores displayed excellent selectivity against Zn(2+), Ca(2+), Ba(2+), Cu(2+), Cd(2+) and Al(3+) with moderate selectivity against Pb(2+), Li(+), Na(+), H(+), K(+), NH4(+) and Cs(+), noting that silver was the only significant interferent with these calixarene-based ionophores. When optimizing the filling solution in a liquid contact ISE, it was possible to achieve a lower limit of detection of approximately 8nM according to the IUPAC definition. Last, the new ionophores were also evaluated in four solid-contact (SC) designs leading to Nernstian response, with the best response noted with a SC electrode utilizing a gold substrate, a poly(3-octylthiophene) (POT) ion-to-electron transducer and a poly(methyl methacrylate)-poly(decyl methacrylate) (PMMA-PDMA) co-polymer membrane. This electrode exhibited a slope of 58.4mVdecade(-1) and a lower detection limit of 30.2nM. Due to the presence of an undesirable water layer and/or leaching of redox mediator from the graphite redox buffered SC, a coated wire electrode on gold and graphite redox buffered SC yielded grossly inferior detection limits against the polypyrrole/PVC SC and POT/PMMA-PDMA SC ISEs that did not display signs of a water layer or leaching of SC ingredients into the membrane.
Synthesis, structure and conformational mobility of tetra-substituted cyanomethoxy p-tert-butylcalix[4]arenes
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA05865E
Abstract: A range of p-tert -butylcalix[4]arenes are functionalized at the lower rim with nitrile and amide functional groups, and the conformational mobility of macrocycles is investigated.
Uranyl complexes of p-t-butylcalix[8]arene as H-bond acceptors—subtle effects of the donors
Publisher: Springer Science and Business Media LLC
Date: 10-05-2021
The role of phosphonate speciation on the inhibition of barium sulfate precipitation
Publisher: Elsevier BV
Date: 03-2003
Bright near Infrared Neodymium Emission from Europium Sensitisation in β-Triketonate Coordination Polymers
Publisher: American Chemical Society (ACS)
Date: 21-03-2018
DOI: 10.26434/CHEMRXIV.6008294.V1
Abstract: Isomorphous β -triketonate-based lanthanoid polymers containing tris(4-methylbenzoyl)methane ( mtbm ) and RbOH with formula, {[Ln(Rb)( mtbm ) 4 ] 2 } n (Ln = Eu 3+ and Nd 3+ ) have been synthesised and structurally characterised. The photophysical properties for the Nd 3+ complex presented long lifetimes and relatively high quantum yields in comparison with analogous β -diketonate complexes. Mixed lanthanoid complexes were also formed and their luminescence properties studied, with effective sensitisation of the 4 F 3/2 of Nd 3+ via the 5 D 0 of Eu 3+ , which is to the best of our knowledge the first ex le of Eu 3+ to Nd 3+ sensitisation in coordination polymers
Actinide complexes of the calixarenes. Part 1. Syntheses and crystal structures of bis(homo-oxa)-p-tert-butylcalix[4]arene and its uranyl ion complex
Publisher: Royal Society of Chemistry (RSC)
Date: 1991
DOI: 10.1039/DT9910000979
Further insight into the coordination of 2,5-dicarbothioamidopyrroles: the case of Cu and Co complexes
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1DT10441A
Abstract: The coordination chemistry of 2,5-dicarbothioamidopyrrole ligands, namely N2,N5-dibutyl-3,4-diphenyl-1H-pyrrole-2,5-bis(carbothioamide) and N2,N5,3,4-tetraphenyl-1H-pyrrole-2,5-bis(carbothioamide), has been investigated with Cu(II) metal centres by means of X-ray crystallography. This resulted in the formation of the expected planar S,N,S' coordinated complex for the former ligand and unexpected ring-closure reactions, with formation of benzothiazole sidearms, for the latter. Both Cu(II) and Cu(I), used in large excess, were found to favour the ring-closure reaction, although the structural characterisation of the resulting complexes contained only Cu(II) cations, with varying coordination geometries ranging from square planar and square-based pyramidal to tetrahedral. By repeating the reaction using a slight excess of Cu(II) (2 : 1) two more different structures were obtained where the metal was coordinated to the original ligand, N2,N5,3,4-tetraphenyl-1H-pyrrole-2,5-bis(carbothioamide), or to the mixed ligand where only one of the thioamide substituents had converted to a benzothiazole. The essential role of Cu for the ring closure reaction was also established by comparing its complex with structural features of the analogous Co(II) complex, the latter revealing no ring closure to give benzothiazole substituents and co-crystallisation of a mixed Co(II)/Co(III) complex. Finally, the structure and photophysical properties of the corresponding 3,4-diphenyl-2,5-bis(benzothiozol-5-yl)-pyrrole ligand, obtained via treatment of the thioamide with K(3)[Fe(CN)(6)], were also investigated revealing a blue-centered emission.
Anionic Cyclometalated Platinum(II) Tetrazolato Complexes as Viable Photoredox Catalysts
Publisher: American Chemical Society (ACS)
Date: 28-02-2019
Voltammetric and NMR studies of a bis(ferrocenecarboxamide)-substituted diaza 18-crown-6 receptor that simultaneously complexes and electrochemically recognises both cations and anions
Publisher: Royal Society of Chemistry (RSC)
Date: 1995
DOI: 10.1039/FT9959100295
Small molecules induce mesocrystal formation: nanoparticle aggregation directed by self-assembling calixarenes
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0CE00579G
Characterization and Inhibition of a Nickel-Alpha-Hydroxyoxime (LIX 63) Salt Precipitate Formed under Proposed Commercial Operating Conditions
Publisher: American Chemical Society (ACS)
Date: 05-2014
DOI: 10.1021/IE5004027
C 4 Dissymmetric resorcinarene derivatives: synthesis, crystal structure and micelle formation
Publisher: Springer Science and Business Media LLC
Date: 06-05-2015
Additions and corrections published 29thNovember 2013 to 6thMarch 2014
Publisher: Royal Society of Chemistry (RSC)
Date: 29-07-2014
DOI: 10.1039/C4CE90118E
A (2-(naphthalen-2-yl)phenyl)rhodium(i ) complex formed by a proposed intramolecular 1,4-ortho-to-ortho′ Rh metal-atom migration and its efficacy as an initiator in the control
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9DT02953B
Abstract: This contribution details the synthesis of a new Rh( i )-aryl complex and the first ex le in which such a complex is employed as an initiator in the controlled polymerisation of phenylacetylene.
Effect of Lanthanum on the Crystal Growth of Barium Sulfate
Publisher: American Chemical Society (ACS)
Date: 18-03-2014
DOI: 10.1021/CG401776E
Alkali-metal ion complexes of the calixarenes. Part 1. Caesium bonding in calix[4]arene systems
Publisher: Royal Society of Chemistry (RSC)
Date: 1993
DOI: 10.1039/DT9930002427
A novel bis(N,N′-dimethyl-1,4,7-triazacyclononane)calyx[4]arene ligand that forms a ferromagnetic dinuclear nickel(II ) complex with three end-on azide bridging ligands
Publisher: Royal Society of Chemistry (RSC)
Date: 1995
DOI: 10.1039/C39950000929
Actinide complexes of the calixarenes. Part 2. Synthesis and crystal structure of a novel thorium(IV) complex of p-tert-butylcalix[8]arene
Publisher: Royal Society of Chemistry (RSC)
Date: 1991
DOI: 10.1039/DT9910002625
Targeting divalent metal cations with Re(i ) tetrazolato complexes
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5DT03690A
Abstract: The design, preparation and characterization of four new Re( i ) tetrazolato complexes together with the study of their luminescent sensing abilities toward Zn( ii ), Cd( ii ) and Cu( ii ) are described herein.
Anionic Cyclometallated platinum(II) Tetrazolato Complexes as Viable Photoredox Catalysts
Publisher: American Chemical Society (ACS)
Date: 17-12-2018
DOI: 10.26434/CHEMRXIV.7472051.V1
Abstract: The synthesis, characterization, photophysical and photocatalytic studies of anionic platinum(II) tetrazolato complexes, with the general structure [TBA][Pt(CNC)TzR], are reported, where CNC 2- represents a doubly cyclometalated 2,4,6-triphenylpyridine, TzR - is an anionic 5-substituted tetrazolato ligand (with a variable R functional group) and TBA + is the tetrabutylammonium countercation. The complexes were prepared by substitution of the DMSO ligand in [Pt(CNC)(DMSO)] with the corresponding tetrazolato ligand. No emission from the platinum(II) complexes was detected at room temperature in solution, but the photophysical properties could be assessed in the solid state, where all the complexes display emission bands attributed to aggregates. The platinum(II) complexes were found to facilitate a range of fundamental classes of visible-light-mediated photoredox-catalyzed reactions, including α‑amino C–H functionalization processes, such as Povarov-type reactions and the addition of α-amino C–H bonds across Michael acceptors, in addition to ATRA chemistry, and a hydrodeiodination. With the exception of the hydrodeiodination process, the best Pt(II) catalysts provided turnover numbers of 150–175 in each of these transformations.
Spontaneous formation of barium sulfate crystals at liquid–liquid interfaces
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2CE01102F
Abstract: Interfacial ion transfer from organic phase to aqueous phase is employed as the basis for formation of barium sulfate crystals close to the interface.
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