Photocapture of dynamic hydrogen-bonded assemblies

Recent advances in the continuing study of [2+2] photodimerization reactions in supramolecular, non-covalent systems are presented. The covalent photocapture of small dynamic assemblies which are formed using weak hydrogen-bonding interactions between two different complementary units, barbiturates...

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Main Authors: Nathan D. McClenaghan, Dario M. Bassani
Format: Article
Language:English
Published: Wiley 2004-01-01
Series:International Journal of Photoenergy
Online Access:http://dx.doi.org/10.1155/S1110662X04000236
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author Nathan D. McClenaghan
Dario M. Bassani
author_facet Nathan D. McClenaghan
Dario M. Bassani
author_sort Nathan D. McClenaghan
collection DOAJ
description Recent advances in the continuing study of [2+2] photodimerization reactions in supramolecular, non-covalent systems are presented. The covalent photocapture of small dynamic assemblies which are formed using weak hydrogen-bonding interactions between two different complementary units, barbiturates and melamines, is discussed. One unit serves as a photo-inert supramolecular template capable of bringing two photoactive units together using multiple hydrogen-bonds. The second type of unit unites the corresponding, complementary hydrogen-bonding motif with a photoactive unit. Irradiation of the supramolecular assemblies leads to photodimerization of adjacent units and generation of an imprinted site for the template. Moieties which are adapted to participate in photodimerization reactions are styrene, cinnamate, stilbene and fullerene units. The results are interpreted on the basis of topochemical reaction control.
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spelling doaj-art-e0e83526fbaf4675af2c69e323d859362025-02-03T01:20:05ZengWileyInternational Journal of Photoenergy1110-662X2004-01-016418519210.1155/S1110662X04000236Photocapture of dynamic hydrogen-bonded assembliesNathan D. McClenaghan0Dario M. Bassani1Groupe de Chimie Supramoléculaire, Biomimétisme et Nanosciences, LCOO CNRS UMR 5802, Université Bordeaux I, Talence 33405, FranceGroupe de Chimie Supramoléculaire, Biomimétisme et Nanosciences, LCOO CNRS UMR 5802, Université Bordeaux I, Talence 33405, FranceRecent advances in the continuing study of [2+2] photodimerization reactions in supramolecular, non-covalent systems are presented. The covalent photocapture of small dynamic assemblies which are formed using weak hydrogen-bonding interactions between two different complementary units, barbiturates and melamines, is discussed. One unit serves as a photo-inert supramolecular template capable of bringing two photoactive units together using multiple hydrogen-bonds. The second type of unit unites the corresponding, complementary hydrogen-bonding motif with a photoactive unit. Irradiation of the supramolecular assemblies leads to photodimerization of adjacent units and generation of an imprinted site for the template. Moieties which are adapted to participate in photodimerization reactions are styrene, cinnamate, stilbene and fullerene units. The results are interpreted on the basis of topochemical reaction control.http://dx.doi.org/10.1155/S1110662X04000236
spellingShingle Nathan D. McClenaghan
Dario M. Bassani
Photocapture of dynamic hydrogen-bonded assemblies
International Journal of Photoenergy
title Photocapture of dynamic hydrogen-bonded assemblies
title_full Photocapture of dynamic hydrogen-bonded assemblies
title_fullStr Photocapture of dynamic hydrogen-bonded assemblies
title_full_unstemmed Photocapture of dynamic hydrogen-bonded assemblies
title_short Photocapture of dynamic hydrogen-bonded assemblies
title_sort photocapture of dynamic hydrogen bonded assemblies
url http://dx.doi.org/10.1155/S1110662X04000236
work_keys_str_mv AT nathandmcclenaghan photocaptureofdynamichydrogenbondedassemblies
AT dariombassani photocaptureofdynamichydrogenbondedassemblies