Influence of bridge topology and torsion on the intramolecular electron transfer

Faraday Discussions
Vega LloverasConcepció Rovira

Abstract

To study molecules able to act as good "molecular wires", intramolecular electron transfer between two triphenylmethyl redox centers connected by bridges with different topologies and substituents have been studied in solution, both by UV-Vis-NIR and EPR spectroscopies. The synthetic methodology used allows a complete control of the geometry of polychlorotriphenylmethyl diradicals 1 and 2, which have para and meta topologies, respectively, as well as of their E/Z isomerism. This fact is used to show the influence of the different topologies in the ease of electron transfer, which is larger for the para than for the meta isomer where a small or negligible electronic coupling is observed. The related diradical 3 that have the same topology as the para isomer 1 but bearing two substituents on the central phenyl ring shows similar ease of electron transfer, that the para isomer 1.

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Citations

May 18, 2011·Chemical Reviews·Jihane Hankache, Oliver S Wenger
Aug 3, 2011·The Journal of Chemical Physics·Yi-Peng AnMark A Ratner
Mar 6, 2013·Acta Crystallographica. Section C, Crystal Structure Communications·Judith GuaschJaume Veciana
Sep 2, 2011·Physical Chemistry Chemical Physics : PCCP·Martin KauppChristoph Lambert
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Jun 2, 2006·Angewandte Chemie·Shigekazu ItoLowell D Kispert
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Aug 19, 2011·Chemical Society Reviews·Imma Ratera, Jaume Veciana
Jul 5, 2016·Physical Chemistry Chemical Physics : PCCP·C LambertV Engel
Mar 31, 2011·Journal of the American Chemical Society·Vega LloverasJaume Veciana
Apr 2, 2008·Journal of the American Chemical Society·Núria CrivillersConcepció Rovira

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