Philip Barker

Detection of Semiquinone Intermediates in Pigment Leached from Sinapis alba L.

Publisher: Elsevier BV

Date: 1979

DOI: 10.1016/S0015-3796(17)31336-7

The interaction of modern sunscreen formulations with surface coatings

Publisher: Elsevier BV

Date: 05-2008

DOI: 10.1016/J.PORGCOAT.2008.01.008

Evaluation of hindered amine light stabilisers and their N-chlorinated derivatives as antibacterial and antifungal additives for thermoset surface coatings

Publisher: Elsevier BV

Date: 10-2016

DOI: 10.1016/J.PORGCOAT.2016.06.009

Desorption electrospray ionisation mass spectrometry of stabilised polyesters reveals activation of hindered amine light stabilisers

Publisher: Elsevier BV

Date: 2014

DOI: 10.1016/J.POLYMDEGRADSTAB.2013.10.026

Highly efficient synthesis of allopurinol locked nucleic acid monomer by C6 deamination of 8-aza-7-bromo-7-deazaadenine locked nucleic acid monomer

Publisher: Georg Thieme Verlag KG

Date: 13-09-2013

DOI: 10.1055/S-0033-1338531

Spin trapping of cyclopentadienyl radicals using nitroso compounds and nitrones

Publisher: Royal Society of Chemistry (RSC)

Date: 1986

DOI: 10.1039/P29860000127

Experimental evidence for competitive N-O and O-C bond homolysis in gas-phase alkoxyamines

Publisher: Elsevier BV

Date: 02-2015

DOI: 10.1016/J.IJMS.2014.06.030

Profluorescent nitroxides: Sensors and stabilizers of radical-mediated oxidative damage

Publisher: Elsevier BV

Date: 09-2008

DOI: 10.1016/J.POLYMDEGRADSTAB.2008.05.028

Development of CeO₂ nanodot encrusted TiO₂ nanoparticles with reduced photocatalytic activity and increased biocompatibility towards a human keratinocyte cell line

Publisher: Royal Society of Chemistry (RSC)

Date: 2020

DOI: 10.1039/D0TB00629G

Abstract: Low photocatalytic CeO 2 /TiO 2 nanocomposite particles with high UV attenuation and reduced ROS generation for application in sunscreen products.

Direct detection of additives and degradation products from polymers by liquid extraction surface analysis employing chip-based nanospray mass spectrometry

Publisher: Wiley

Date: 15-01-2012

DOI: 10.1002/RCM.6116

Abstract: Polymer-based surface coatings in outdoor applications experience accelerated degradation due to exposure to solar radiation, oxygen and atmospheric pollutants. These deleterious agents cause undesirable changes to the aesthetic and mechanical properties of the polymer, reducing its lifetime. The use of antioxidants such as hindered amine light stabilisers (HALS) retards these degradative processes however, mechanisms for HALS action and polymer degradation are poorly understood. Detection of the HALS TINUVIN®123 (bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate) and the polymer degradation products directly from a polyester-based coil coating was achieved by liquid extraction surface analysis (LESA) coupled to a triple quadrupole QTRAP® 5500 mass spectrometer. The detection of TINUVIN®123 and melamine was confirmed by the characteristic fragmentation pattern observed in LESA-MS/MS spectra that was identical to that reported for authentic s les. Analysis of an unstabilised coil coating by LESA-MS after exposure to 4 years of outdoor field testing revealed the presence of melamine (1,3,5-triazine-2,4,6-triamine) as a polymer degradation product at elevated levels. Changes to the physical appearance of the coil coating, including powder-like deposits on the coating's surface, were observed to coincide with melamine deposits and are indicative of the phenomenon known as polymer 'blooming'. For the first time, in situ detection of analytes from a thermoset polymer coating was accomplished without any s le preparation, providing advantages over traditional extraction-analysis approaches and some contemporary ambient MS methods. Detection of HALS and polymer degradation products such as melamine provides insight into the mechanisms by which degradation occurs and suggests LESA-MS is a powerful new tool for polymer analysis.

Structural identification of hindered amine light stabilisers in coil coatings using electrospray ionisation tandem mass spectrometry

Publisher: Wiley

Date: 18-03-2010

DOI: 10.1002/JMS.1730

Abstract: Hindered amine light stabilisers (HALS) are the most effective antioxidants currently available for polymer systems in post-production, in-service applications, yet the mechanism of their action is still not fully understood. Structural characterisation of HALS in polymer matrices, particularly the identification of structural modifications brought about by oxidative conditions, is critical to aid mechanistic understanding of the prophylactic effects of these molecules. In this work, electrospray ionisation tandem mass spectrometry (ESI-MS/MS) was applied to the analysis of a suite of commercially available 2,2,6,6-tetramethylpiperidine-based HALS. Fragmentation mechanisms for the [M + H](+) ions are proposed, which provide a rationale for the product ions observed in the MS/MS and MS(3) mass spectra of N-H, N-CH(3), N-C(O)CH(3) and N-OR containing HALS (where R is an alkyl substituent). A common product ion at m/z 123 was identified for the group of antioxidants containing N-H, N-CH(3) or N-C(O)CH(3) functionality, and this product ion was employed in precursor ion scans on a triple quadrupole mass spectrometer to identify the HALS species present in a crude extract from of a polyester-based coil coating. Using MS/MS, two degradation products were unambiguously identified. This technique provides a simple and selective approach to monitoring HALS structures within complex matrices.

Characterization of spin adducts obtained with hydrophobic nitrone spin traps

Publisher: Royal Society of Chemistry (RSC)

Date: 1985

DOI: 10.1039/P29850000147

An opto-magneto-mechanical quantum interface between distant superconducting qubits

Publisher: Springer Science and Business Media LLC

Date: 04-07-2014

DOI: 10.1038/SREP05571

Degradation of Poly(methyl methacrylate) Model Compounds Under Extreme Environmental Conditions

Publisher: Wiley

Date: 17-05-2010

DOI: 10.1002/MACP.200900625

Oxidation of 4-substituted TEMPO derivatives reveals modifications at the 1- and 4-positions

Publisher: Royal Society of Chemistry (RSC)

Date: 2011

DOI: 10.1039/C1OB05037K

Abstract: Potenital pathways for the deactivation of hindered amine light stabilisers (HALS) have been investigated by observing reactions of model compounds--based on 4-substituted derivatives of 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO)--with hydroxyl radicals. In these reactions, dilute aqueous suspensions of photocatalytic nanoparticulate titanium dioxide were irradiated with UV light in the presence of water-soluble TEMPO derivatives. Electron spin resonance (ESR) and electrospray ionisation mass-spectrometry (ESI-MS) data were acquired to provide complementary structural elucidation of the odd- and even-electron products of these reactions and both techniques show evidence for the formation of 4-oxo-TEMPO (TEMPONE). TEMPONE formation from the 4-substituted TEMPO compounds is proposed to be initiated by hydrogen abstraction at the 4-position by hydroxyl radical. High-level ab initio calculations reveal a thermodynamic preference for abstraction of this hydrogen but computed activation barriers indicate that, although viable, it is less favoured than hydrogen abstraction from elsewhere on the TEMPO scaffold. If a radical is formed at the 4-position however, calculations elucidate two reaction pathways leading to TEMPONE following combination with either a second hydroxyl radical or dioxygen. An alternate mechanism for conversion of TEMPOL to TEMPONE via an alkoxyl radical intermediate is also considered and found to be competitive with the other pathways. ESI-MS analysis also shows an increased abundance of analogous 4-substituted piperidines during the course of irradiation, suggesting competitive modification at the 1-position to produce a secondary amine. This modification is confirmed by characteristic fragmentation patterns of the ionised piperidines obtained by tandem mass spectrometry. The conclusions describe how reaction at the 4-position could be responsible for the gradual depletion of HALS in pigmented surface coatings and secondly, that modification at nitrogen to form the corresponding secondary amine species may play a greater role in the stabilisation mechanisms of HALS than previously considered.

Selective Effects of Paramagnetic Relaxation Reagents in ^1SC NMR Spectral Editing

Publisher: American Chemical Society (ACS)

Date: 09-1991

DOI: 10.1021/EF00029A025

Systematic evaluation of 2′-Fluoro modified chimeric antisense oligonucleotide-mediated exon skipping in vitro

Publisher: Springer Science and Business Media LLC

Date: 15-04-2019

DOI: 10.1038/S41598-019-42523-0

Abstract: Antisense oligonucleotide (AO)-mediated splice modulation has been established as a therapeutic approach for tackling genetic diseases. Recently, Exondys51, a drug that aims to correct splicing defects in the dystrophin gene was approved by the US Food and Drug Administration (FDA) for the treatment of Duchenne muscular dystrophy (DMD). However, Exondys51 has relied on phosphorodiamidate morpholino oligomer (PMO) chemistry which poses challenges in the cost of production and compatibility with conventional oligonucleotide synthesis procedures. One approach to overcome this problem is to construct the AO with alternative nucleic acid chemistries using solid-phase oligonucleotide synthesis via standard phosphoramidite chemistry. 2′-Fluoro (2′-F) is a potent RNA analogue that possesses high RNA binding affinity and resistance to nuclease degradation with good safety profile, and an approved drug Macugen containing 2′-F-modified pyrimidines was approved for the treatment of age-related macular degeneration (AMD). In the present study, we investigated the scope of 2′-F nucleotides to construct mixmer and gapmer exon skipping AOs with either 2′- O -methyl (2′- O Me) or locked nucleic acid (LNA) nucleotides on a phosphorothioate (PS) backbone, and evaluated their efficacy in inducing exon-skipping in mdx mouse myotubes in vitro . Our results showed that all AOs containing 2′-F nucleotides induced efficient exon-23 skipping, with LNA/2′-F chimeras achieving better efficiency than the AOs without LNA modification. In addition, LNA/2′-F chimeric AOs demonstrated higher exonuclease stability and lower cytotoxicity than the 2′- O Me/2′-F chimeras. Overall, our findings certainly expand the scope of constructing 2′-F modified AOs in splice modulation by incorporating 2′- O Me and LNA modifications.

Reversible coupling of a substituted allylic radical with molecular oxygen in a toco reaction of 5-methylhepta-1,3,6-triene

Publisher: Elsevier BV

Date: 1983

DOI: 10.1016/S0040-4039(00)81337-4

Oligodeoxynucleotides containing 2′-amino-LNA nucleotides as constrained morpholino phosphoramidate and phosphorodiamidate monomers

Publisher: Elsevier BV

Date: 07-2017

DOI: 10.1016/J.BMCL.2017.05.023

Abstract: Incorporation in a 2'→5' direction of a phosphorodiamidite 2'-amino-LNA-T nucleotide as the morpholino phosphoramidate and N,N-dimethylamino phosphorodiamidate monomers into six oligonucleotides is reported. Thermal denaturation studies showed that the novel 2'-amino-LNA-based morpholino monomers exert a destabilizing effects on duplexes formed with complementary DNA and RNA.

Attenuation of UV absorption by poly(lactic acid)-iron oxide nanocomposite particles and their potential application in sunscreens

Publisher: Elsevier BV

Date: 02-2021

DOI: 10.1016/J.CEJ.2020.126843

Degradation of Poly(methyl methacrylate) Model Compounds at Constant Elevated Temperature Studied via High Resolution Electrospray Ionization Mass Spectrometry (ESI‐MS)

Publisher: Wiley

Date: 10-08-2007

DOI: 10.1002/MARC.200700330

Deuterium isotope effect on the electron spin resonance spectrum of the cyclopentadienyl radical

Publisher: Royal Society of Chemistry (RSC)

Date: 1979

DOI: 10.1039/C39790000815

NMR spectrometry - A new method for total stool fat quantification in chronic pancreatitis

Publisher: Springer Science and Business Media LLC

Date: 05-1987

DOI: 10.1007/BF01296032

Abstract: Prior research using the Brief Form of the Multidimensional Personality Questionnaire (MPQ-BF Patrick, Curtin, & Tellegen, 2002) has shown evidence of 3 temperament-based subtypes--termed internalizing, externalizing, and simple PTSD--among in iduals with symptoms of posttraumatic stress disorder (PTSD Miller, Greif, & Smith, 2003). This study sought to replicate and extend research in this area by conducting a latent profile analysis of higher order temperament scales from the MPQ-BF using a new s le of 208 veterans with symptoms of PTSD. Results suggest that a 3-class solution reflecting internalizing, externalizing, and simple subtypes of posttraumatic psychopathology provided the best fit to the data. The externalizing subtype was characterized by features of antisocial, borderline, histrionic, and narcissistic personality disorders on the International Personality Disorder Examination (Loranger, 1999) as well as low levels of constraint and high levels of negative emotionality on the MPQ-BF. In contrast, in iduals in the internalizing class exhibited features of schizoid and avoidant personality disorders, low levels of positive emotionality, and high levels of negative emotionality. The simple subtype was defined by low levels of comorbid personality disorder features and relatively normal personality profiles. Findings support the reliability of this typology and support the relevance of the internalizing and externalizing model to the structure of personality disorders.

Hydrothermal synthesis of rutile TiO2 nanorods and their decoration with CeO2 nanoparticles as low-photocatalytic active ingredients in UV filtering applications

Publisher: Springer Science and Business Media LLC

Date: 04-2020

DOI: 10.1007/S10853-020-04598-3

Author Correction: Systematic evaluation of 2′-Fluoro modified chimeric antisense oligonucleotide-mediated exon skipping in vitro

Publisher: Springer Science and Business Media LLC

Date: 16-04-2020

DOI: 10.1038/S41598-020-63706-0

Abstract: An amendment to this paper has been published and can be accessed via a link at the top of the paper.

Investigation of the microbial communities colonizing prepainted steel used for roofing and walling

Publisher: Wiley

Date: 20-12-2017

DOI: 10.1002/MBO3.425

Synthesis and Biophysical Investigations of Oligonucleotides Containing Galactose-Modified DNA, LNA, and 2′-Amino-LNA Monomers

Publisher: American Chemical Society (ACS)

Date: 25-10-2016

DOI: 10.1021/ACS.JOC.6B01917

Abstract: Galactose-modified thymidine, LNA-T, and 2'-amino-LNA-T nucleosides were synthesized, converted into the corresponding phosphoramidite derivatives and introduced into short oligonucleotides. Compared to the unmodified control strands, the galactose-modified oligonucleotides in general, and the N2'-functionalized 2'-amino-LNA derivatives in particular, showed improved duplex thermal stability against DNA and RNA complements and increased ability to discriminate mismatches. In addition, the 2'-amino-LNA-T derivatives induced remarkable 3'-exonuclease resistance. These results were further investigated using molecular modeling studies.

Cover Image

Publisher: Wiley

Date: 04-2018

DOI: 10.1002/JHET.3181

The dynamic behaviour of sunscreens under in-service conditions.

Publisher: Elsevier BV

Date: 05-2022

DOI: 10.1016/J.JPHOTOBIOL.2022.112435

Abstract: Discussion continues over various aspects of sunscreen science: regulation, test methods, sun protection factor (SPF), labelling claims, potentially harmful components, among others. In this paper the UV transmission properties of a number of commercial sunscreens have been determined at constant sunscreen film thickness under different local UV Index conditions. The data demonstrate difficulties facing the public and the sunscreen industry as a whole, even though SPF values and other data stated on the sunscreen packaging are assumed to be correct according to standard testing methods. This work has shown that at realistic application rates the critical factors are the intensity of the incident solar radiation and the accumulated erythema UV dose transmitted over time. In one ex le, on 'Extreme' UV Index days, an SPF 30 sunscreen under test transmitted one minimal erythema dose (MED) of UV in only 35 min. In another ex le, although it should not, in theory, transmit one MED until several hours of exposure, this level was reached in 1 h by an SPF 50 sunscreen under these typical Australian summer conditions (UV Index 12) in Wollongong, NSW (34.4°S). Such properties could have severe consequnces if these sunscreens were used by in iduals with Fitzpatrick Skin Type 1, organ transplant recipients or other immuno-compromised in iduals.

Characterising in situ activation and degradation of hindered amine light stabilisers using liquid extraction surface analysis-mass spectrometry

Publisher: Elsevier BV

Date: 2014

DOI: 10.1016/J.ACA.2013.09.039

Abstract: Changes in the molecular structure of polymer antioxidants such as hindered amine light stabilisers (HALS) is central to their efficacy in retarding polymer degradation and therefore requires careful monitoring during their in-service lifetime. The HALS, bis-(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl) sebacate (TIN123) and bis-(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate (TIN292), were formulated in different polymer systems and then exposed to various curing and ageing treatments to simulate in-service use. S les of these coatings were then analysed directly using liquid extraction surface analysis (LESA) coupled with a triple quadrupole mass spectrometer. Analysis of TIN123 formulated in a cross-linked polyester revealed that the polymer matrix protected TIN123 from undergoing extensive thermal degradation that would normally occur at 292°C, specifically, changes at the 1- and 4-positions of the piperidine groups. The effect of thermal versus photo-oxidative degradation was also compared for TIN292 formulated in polyacrylate films by monitoring the in situ conversion of N-CH3 substituted piperidines to N-H. The analysis confirmed that UV light was required for the conversion of N-CH3 moieties to N-H - a major pathway in the antioxidant protection of polymers - whereas this conversion was not observed with thermal degradation. The use of tandem mass spectrometric techniques, including precursor-ion scanning, is shown to be highly sensitive and specific for detecting molecular-level changes in HALS compounds and, when coupled with LESA, able to monitor these changes in situ with speed and reproducibility.

Nano-sunscreens – a double-edged sword in protecting consumers from harm: viewing Australian regulatory policies through the lenses of the European Union

Publisher: Informa UK Limited

Date: 07-02-2019

DOI: 10.1080/10408444.2019.1579780

Abstract: Nanotechnology has the potential to bring about revolutionary changes in manufacturing products, including sunscreens. However, a knowledge gap between benefits and detriments of engineered nano-materials used in sunscreens exists, which gives rise to safety concerns. This article is concerned with the protection of consumers without impairing the embellishment of this promising technology. It is widely argued that the harm associated with nano-sunscreens may only occur under certain conditions related mainly to users skin vulnerability, which can be avoided by informed and careful use of such a product. We thus recognize the need for fostering the growth of nanotech simultaneously with preventing potential harm. We revisit the Australian sunscreens regulatory policies, which embrace a "wait and see" approach, through the lens of regulatory policies in the European Union (EU) that are influenced by a "precautionary principle." We highlight the importance of informing consumers about the sunscreen they are using and recommend that product labels should disclose the presence of nano-ingredients in line with the EU disclosure requirements. This will allow users to carefully apply the product in order to avoid any potential harm and to protect manufacturers from possible costly litigation in future. This can be achieved through a combined collaborative effort of regulators, supply chain entities, and end users.

Novel NMR Analysis of Aqueous Streams from a Coal Liquefaction Process

Publisher: American Chemical Society (ACS)

Date: 03-1990

DOI: 10.1021/EF00020A005

Ambient ionisation mass spectrometry for the characterisation of polymers and polymer additives: A review

Publisher: Elsevier BV

Date: 2014

DOI: 10.1016/J.ACA.2013.10.001

Abstract: The purpose of this review is to showcase the present capabilities of ambient s ling and ionisation technologies for the analysis of polymers and polymer additives by mass spectrometry (MS) while simultaneously highlighting their advantages and limitations in a critical fashion. To qualify as an ambient ionisation technique, the method must be able to probe the surface of solid or liquid s les while operating in an open environment, allowing a variety of s le sizes, shapes, and substrate materials to be analysed. The main sections of this review will be guided by the underlying principle governing the desorption/extraction step of the analysis liquid extraction, laser ablation, or thermal desorption, and the major component investigated, either the polymer itself or exogenous compounds (additives and contaminants) present within or on the polymer substrate. The review will conclude by summarising some of the challenges these technologies still face and possible directions that would further enhance the utility of ambient ionisation mass spectrometry as a tool for polymer analysis.

The photolysis of cyclopentadienyl compounds of tin and mercury. Electron spin resonance spectra and electronic configuration of the cyclopentadienyl, deuteriocyclopentadienyl, and alkylcyclopentadienyl radicals

Publisher: Royal Society of Chemistry (RSC)

Date: 1980

DOI: 10.1039/P29800000941

Homolytic cleavage of metal-carbon bonds: Groups I to V

Publisher: John Wiley & Sons, Ltd.

Date: 2010

DOI: 10.1002/9780470771747.CH3

Embodied learning in the classroom: Effects on primary school children’s attention and foreign language vocabulary learning

Publisher: Elsevier BV

Date: 07-2019

DOI: 10.1016/J.PSYCHSPORT.2018.12.017

Antisense Oligonucleotides Targeting Angiogenic Factors as Potential Cancer Therapeutics

Publisher: Elsevier BV

Date: 03-2019

DOI: 10.1016/J.OMTN.2018.11.007

Electron spin resonance spectra and the structures of substituted cyclopentadienyl radicals

Publisher: Royal Society of Chemistry (RSC)

Date: 1979

DOI: 10.1039/C39790000587

An electron spin resonance study of the reactivity of alkylchlorotin radicals, RnCl3-nSn^. (n = 0-3) towards alkenes, alkyl bromides, and biacetyl. The spectra and structures of the alkylchlorotin derivatives of butane-2,3-semidione, RnCl3-nSnOCMeCMeO^.

Publisher: Royal Society of Chemistry (RSC)

Date: 1980

DOI: 10.1039/P29800001488

Optimization of an eco-friendly dyeing process in both laboratory scale and pilot scale supercritical carbon dioxide unit for polypropylene fabrics with special new disperse dyes

Publisher: Elsevier BV

Date: 10-2019

DOI: 10.1016/J.JCOU.2019.06.018

Biocompatible Bi(OH)3 nanoparticles with reduced photocatalytic activity as possible ultraviolet filter in sunscreens

Publisher: Elsevier BV

Date: 12-2018

DOI: 10.1016/J.MATERRESBULL.2018.08.041

Enaminones in heterocyclic syntheses: Part 4. A new one-step synthetic route to pyrrolo[3,4-b]pyridine and convenient syntheses of 1,4-dihydropyridines and 1,1′-(1,4-phenylene)bis(1,4-dihydropyridine)

Publisher: Wiley

Date: 23-01-2014

DOI: 10.1002/JHET.1609

Electron spin resonance spectra and structures of the butylchlorotin derivatives of butane-2,3-semidione, BunCl3-nSnOCMeCMeO

Publisher: Elsevier BV

Date: 03-1980

DOI: 10.1016/S0022-328X(00)90545-X

Thermal stability of G-rich anti-parallel DNA triplexes upon insertion of LNA and α-l-LNA

Publisher: Royal Society of Chemistry (RSC)

Date: 2015

DOI: 10.1039/C5OB00535C

Abstract: G-rich anti-parallel DNA triplexes were modified with LNA or α- l -LNA in their Watson–Crick and TFO strands.

The E.S.R. spectrum and structure of tetrapyridine copper(II) perchlorate

Publisher: Elsevier BV

Date: 1980

DOI: 10.1016/S0020-1693(00)80143-7

Degradation of Poly(methyl methacrylate) Model Compounds Under Extreme Environmental Conditions

Publisher: Wiley

Date: 30-06-2010

DOI: 10.1002/MACP.201000282

Desorption electrospray ionisation mass spectrometry reveals in situ modification of a hindered amine light stabiliser resulting from direct N-OR bond cleavage

Publisher: Royal Society of Chemistry (RSC)

Date: 2011

DOI: 10.1039/C0AN00656D

Abstract: Detection and characterisation of structural modifications of a hindered amine light stabiliser (HALS) directly from a polyester-based coil coating have been achieved by desorption electrospray ionisation mass spectrometry (DESI-MS) for the first time. In situ detection is made possible by exposing the coating to an acetone vapour atmosphere prior to analysis. This is a gentle and non-destructive treatment that allows diffusion of analyte to the surface without promoting lateral migration. Using this approach a major structural modification of the HALS TINUVIN®123 (bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate) was discovered where one N-ether piperidine moiety (N-OC(8)H(17)) is converted to a secondary piperidine (N-H). With the use of 2-dimensional DESI-MS imaging the modification was observed to arise during high curing temperatures (ca. 260 °C) and under simulated physiological conditions (80 °C, full solar spectrum). It is proposed that the secondary piperidine derivative is a result of a highly reactive aminyl radical intermediate produced by N-O homolytic bond cleavage. The nature of the bond cleavage is also suggested by ESR spin-trapping experiments employing α-phenyl-N-tert-butyl nitrone (PBN) in toluene at 80 °C. The presence of a secondary piperidine derivative in situ and the implication of N-OR competing with NO-R bond cleavage suggest an alternative pathway for generation of the nitroxyl radical-an essential requirement in anti-oxidant activity that has not previously been described for the N-ether sub-class of HALS.

Y2O3 decorated TiO2 nanoparticles: Enhanced UV attenuation and suppressed photocatalytic activity with promise for cosmetic and sunscreen applications

Publisher: Elsevier BV

Date: 06-2020

DOI: 10.1016/J.JPHOTOBIOL.2020.111883

Aston University School Of Engineering And Applied Science

Location: United Kingdom of Great Britain and Northern Ireland

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BHP Billiton Ltd

Location: Australia

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Australian National University

Location: Australia

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Bruker AXS GmbH

Location: Germany

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BlueScope Steel Ltd Port Kembla

Location: Australia

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University Of Victoria

Location: Canada

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University College London

Location: United Kingdom of Great Britain and Northern Ireland

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University Of Wollongong

Location: Australia

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New Photoinitiators And Polymers For Tack-free LED Cured Surface Coatings

Start Date: 2019

End Date: 2021

Funder: Australian Research Council

Linkage Projects - Grant ID: LP110200322

Start Date: 02-2012

End Date: 04-2015

Amount: $300,000.00

Funder: Australian Research Council

Linkage Projects - Grant ID: LP0883262

Start Date: 02-2009

End Date: 01-2012

Amount: $122,000.00

Funder: Australian Research Council

Linkage Projects - Grant ID: LP0775032

Start Date: 11-2007

End Date: 12-2011

Amount: $117,354.00

Funder: Australian Research Council

Linkage Projects - Grant ID: LP180100550

Start Date: 04-2020

End Date: 04-2024

Amount: $285,000.00

Funder: Australian Research Council

Linkage Projects - Grant ID: LP0212072

Start Date: 12-2002

End Date: 12-2006

Amount: $67,635.00

Funder: Australian Research Council

Linkage Projects - Grant ID: LP0561924

Start Date: 07-2005

End Date: 12-2009

Amount: $78,444.00

Funder: Australian Research Council

Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0453771

Start Date: 2004

End Date: 12-2005

Amount: $148,246.00

Funder: Australian Research Council

ARC Centres Of Excellence - Grant ID: CE0561607

Start Date: 12-2005

End Date: 10-2015

Amount: $21,800,000.00

Funder: Australian Research Council