Optical Properties of Some New Azo Photoisomerizable Bismaleimide Derivatives

Novel polythioetherimides bearing azobenzene moieties were synthesized from azobismaleimides and bis-2-mercaptoethylether. Kinetics of trans-cis photoisomerization and of thermal conversion of cis to trans isomeric forms were investigated in both polymer solution and poly(methyl methacrylate) doped...

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Detalles Bibliográficos
Autores principales: Airinei, Anton, Fifere, Nicusor, Homocianu, Mihaela, Gaina, Constantin, Gaina, Viorica, Simionescu, Bogdan C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2011
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3189776/
https://www.ncbi.nlm.nih.gov/pubmed/22016652
http://dx.doi.org/10.3390/ijms12096176
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author Airinei, Anton
Fifere, Nicusor
Homocianu, Mihaela
Gaina, Constantin
Gaina, Viorica
Simionescu, Bogdan C.
author_facet Airinei, Anton
Fifere, Nicusor
Homocianu, Mihaela
Gaina, Constantin
Gaina, Viorica
Simionescu, Bogdan C.
author_sort Airinei, Anton
collection PubMed
description Novel polythioetherimides bearing azobenzene moieties were synthesized from azobismaleimides and bis-2-mercaptoethylether. Kinetics of trans-cis photoisomerization and of thermal conversion of cis to trans isomeric forms were investigated in both polymer solution and poly(methyl methacrylate) doped films using electronic absorption spectroscopy. Thermal recovery kinetics is well described by a two-exponential relation both in solution and polymer matrix, while that of low molecular weight azobismaleimide fit a first-order equation. The photoinduced cis-trans isomerization by visible light of azobenzene chromophores was examined in solution and in polymer films. The rate of photoinduced recovery was very high for azobismaleimides.
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spelling pubmed-31897762011-10-20 Optical Properties of Some New Azo Photoisomerizable Bismaleimide Derivatives Airinei, Anton Fifere, Nicusor Homocianu, Mihaela Gaina, Constantin Gaina, Viorica Simionescu, Bogdan C. Int J Mol Sci Article Novel polythioetherimides bearing azobenzene moieties were synthesized from azobismaleimides and bis-2-mercaptoethylether. Kinetics of trans-cis photoisomerization and of thermal conversion of cis to trans isomeric forms were investigated in both polymer solution and poly(methyl methacrylate) doped films using electronic absorption spectroscopy. Thermal recovery kinetics is well described by a two-exponential relation both in solution and polymer matrix, while that of low molecular weight azobismaleimide fit a first-order equation. The photoinduced cis-trans isomerization by visible light of azobenzene chromophores was examined in solution and in polymer films. The rate of photoinduced recovery was very high for azobismaleimides. Molecular Diversity Preservation International (MDPI) 2011-09-21 /pmc/articles/PMC3189776/ /pubmed/22016652 http://dx.doi.org/10.3390/ijms12096176 Text en © 2011 by the authors; licensee MDPI, Basel, Switzerland. http://creativecommons.org/licenses/by/3.0 This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Airinei, Anton
Fifere, Nicusor
Homocianu, Mihaela
Gaina, Constantin
Gaina, Viorica
Simionescu, Bogdan C.
Optical Properties of Some New Azo Photoisomerizable Bismaleimide Derivatives
title Optical Properties of Some New Azo Photoisomerizable Bismaleimide Derivatives
title_full Optical Properties of Some New Azo Photoisomerizable Bismaleimide Derivatives
title_fullStr Optical Properties of Some New Azo Photoisomerizable Bismaleimide Derivatives
title_full_unstemmed Optical Properties of Some New Azo Photoisomerizable Bismaleimide Derivatives
title_short Optical Properties of Some New Azo Photoisomerizable Bismaleimide Derivatives
title_sort optical properties of some new azo photoisomerizable bismaleimide derivatives
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3189776/
https://www.ncbi.nlm.nih.gov/pubmed/22016652
http://dx.doi.org/10.3390/ijms12096176
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