ORCID Profile
0000-0002-5380-9204
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
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.
Structural Chemistry and Spectroscopy | Electrochemistry | Macromolecular and Materials Chemistry | Synthesis of Materials | Transition Metal Chemistry | Nanochemistry and Supramolecular Chemistry | Physical Chemistry (Incl. Structural)
Publisher: Wiley
Date: 08-03-2018
Abstract: The interdependent effects of temperature and guest uptake on the structure of the ultramicroporous metal-organic framework [Cu
Publisher: American Association for the Advancement of Science (AAAS)
Date: 27-01-2023
Abstract: When tiles decorated to lower their symmetry are joined together, they can form aperiodic and labyrinthine patterns. Such Truchet tilings offer an efficient mechanism of visual data storage related to that used in barcodes and QR codes. We show that the crystalline metal–organic framework [OZn 4 ][1,3-benzenedicarboxylate] 3 (TRUMOF-1) is an atomic-scale realization of a complex three-dimensional Truchet tiling. Its crystal structure consists of a periodically arranged assembly of identical zinc-containing clusters connected uniformly in a well-defined but disordered fashion to give a topologically aperiodic microporous network. We suggest that this unusual structure emerges as a consequence of geometric frustration in the chemical building units from which it is assembled.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8SC01040D
Abstract: Ambient temperature spin crossover with wide hysteresis has been achieved in 2D Hofmann-type materials, where removal of guest molecules optimises ligand–ligand interactions, resulting in increased cooperativity.
Publisher: Wiley
Date: 13-03-2019
Abstract: Reaction of the chloranilate dianion with Y(NO
Publisher: Springer Science and Business Media LLC
Date: 19-11-2018
DOI: 10.1038/S41467-018-06850-6
Abstract: Control of the thermomechanical properties of functional materials is of great fundamental and technological significance, with the achievement of zero or negative thermal expansion behavior being a key goal for various applications. A dynamic, reversible mode of control is demonstrated for the first time in two Prussian blue derivative frameworks whose coefficients of thermal expansion are tuned continuously from negative to positive values by varying the concentration of adsorbed CO 2 . A simple empirical model that captures site-specific guest contributions to the framework expansion is derived, and displays excellent agreement with the observed lattice behaviour.
Publisher: American Chemical Society (ACS)
Date: 19-08-2015
Publisher: American Chemical Society (ACS)
Date: 23-03-2015
DOI: 10.1021/JP512501K
Publisher: International Union of Crystallography (IUCr)
Date: 12-2015
DOI: 10.1107/S2052520615022295
Abstract: Metal–organic frameworks (MOFs) are promising solid sorbents, showing gas selectivity and uptake capacities relevant to many important applications, notably in the energy sector. To improve and tailor the sorption properties of these materials for such applications, it is necessary to gain an understanding of their working mechanisms at the atomic and molecular scale. Specifically, it is important to understand how features such as framework porosity, topology, chemical functionality and flexibility underpin sorbent behaviour and performance. Such information is obtained through interrogation of structure–function relationships, with neutron powder diffraction (NPD) being a particularly powerful characterization tool. The combination of NPD with first-principles density functional theory (DFT) calculations enables a deep understanding of the sorption mechanisms, and the resulting insights can direct the future development of MOF sorbents. In this paper, experimental approaches and investigations of two ex le MOFs are summarized, which demonstrate the type of information and the understanding into their functional mechanisms that can be gained. Such information is critical to the strategic design of new materials with targeted gas-sorption properties.
Publisher: International Union of Crystallography (IUCr)
Date: 08-03-2016
DOI: 10.1107/S1600576716001965
Abstract: A system for positioning powder s les in top-loading cryofurnaces during neutron scattering experiments, while facilitating the successive delivery of gas doses at set temperatures to the s le, has been designed and tested. The positioning system is compatible with a Hiden Isochema IMI instrument as a gas-dosing platform, enabling gases to be delivered to the s le through a centrally located and thermally stabilized capillary line and valve. The positioning system separates into an upper and a lower section, with the lower section enabling the s le to be isolated and inserted into a glove box. This work describes the system using ex le neutron powder diffraction results obtained with this system in closed-cycle cryofurnaces.
Publisher: American Chemical Society (ACS)
Date: 30-07-2014
DOI: 10.1021/CM502189C
Publisher: Springer Science and Business Media LLC
Date: 04-06-2020
DOI: 10.1038/S41467-020-15510-7
Abstract: Reversible structural transformations of porous coordination frameworks in response to external stimuli such as light, electrical potential, guest inclusion or pressure, amongst others, have been the subject of intense interest for applications in sensing, switching and molecular separations. Here we report a coordination framework based on an electroactive tetrathiafulvalene exhibiting a reversible single crystal-to-single crystal double [2 + 2] photocyclisation, leading to profound differences in the electrochemical, optical and mechanical properties of the material upon light irradiation. Electrochemical and in situ spectroelectrochemical measurements, in combination with in situ light-irradiated Raman spectroscopy and atomic force microscopy, revealed the variable mechanical properties of the framework that were supported using Density Functional Theory calculations. The reversible structural transformation points towards a plethora of potential applications for coordination frameworks in photo-mechanical and photoelectrochemical devices, such as light-driven actuators and photo-valves for targeted drug delivery.
Publisher: Wiley
Date: 09-04-2013
Publisher: Wiley
Date: 03-04-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2CC03780G
Abstract: A chrysene-loaded spin crossover material exhibits a two-step thermally-activated spin transition driven by guest-induced local symmetry breaking.
Publisher: Wiley
Date: 22-05-2018
Abstract: An understanding of the atomic-scale interactions between gas sorbent materials and their molecular guests is essential for the identification of the origins of desirable function and the rational optimization of performance. However, characterizations performed on equilibrated sorbent-guest systems may not accurately represent their behavior under dynamic operating conditions. The emergence of fast (minute-scale) neutron powder diffraction coupled with direct, real-time quantification of gas uptake opens up new possibilities for obtaining knowledge about concentration-dependent effects of guest loading upon function-critical features of sorbent materials, including atomic structure, diffusion pathways, and thermal expansion of the sorbent framework. This article presents a detailed investigation of the ultramicroporous metal-organic framework [Cu
Publisher: Wiley
Date: 13-06-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3CC46019C
Abstract: Neutron powder diffraction measurements were carried out on the evacuated and CO2-loaded Prussian blue analogue, Fe3[Co(CN)6]2, identifying two distinct CO2 adsorption sites: site A, in which CO2 uniquely bridges between two bare-metal sites, and site B, in which it interacts in a face capping motif. The saturation of site A at low loadings of CO2 demonstrates the favourable nature of the interaction of CO2 with bare-metal sites within the material.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA05226B
Abstract: Li 6 C 60 can absorb up to 14 NH 3 per C 60 its structural evolution upon desorption is studied by neutron powder diffraction.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7TC03853D
Abstract: The unexplored electron donor molecule triselenathiafulvalene (TSTF) and its corresponding charge transfer complex with the well-known electron acceptor TCNQ exhibit rich electronic, optical and semiconducting properties.
Publisher: Royal Society of Chemistry (RSC)
Date: 04-06-2014
DOI: 10.1039/C4SC00809J
Publisher: Springer Science and Business Media LLC
Date: 11-01-2016
DOI: 10.1038/NCHEM.2431
Abstract: The mechanical flexibility of coordination frameworks can lead to a range of highly anomalous structural behaviours. Here, we demonstrate the extreme compressibility of the LnFe(CN)6 frameworks (Ln = Ho, Lu or Y), which reversibly compress by 20% in volume under the relatively low pressure of 1 GPa, one of the largest known pressure responses for any crystalline material. We delineate in detail the mechanism for this high compressibility, where the LnN6 units act like torsion springs synchronized by rigid Fe(CN)6 units performing the role of gears. The materials also show significant negative linear compressibility via a cam-like effect. The torsional mechanism is fundamentally distinct from the deformation mechanisms prevalent in other flexible solids and relies on competition between locally unstable metal coordination geometries and the constraints of the framework connectivity, a discovery that has implications for the strategic design of new materials with exceptional mechanical properties.
Publisher: American Chemical Society (ACS)
Date: 08-07-2020
No related organisations have been discovered for Samuel Duyker.
Start Date: 01-2023
End Date: 01-2026
Amount: $602,766.00
Funder: Australian Research Council
View Funded ActivityStart Date: 04-2023
End Date: 04-2023
Amount: $597,373.00
Funder: Australian Research Council
View Funded Activity