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Volume 131, 2006
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Influence of bridge topology and torsion on the intramolecular electron transfer

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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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Article information

11 May 2005
08 Jun 2005
First published
12 Oct 2005

Faraday Discuss., 2006,131, 291-305
Article type

Influence of bridge topology and torsion on the intramolecular electron transfer

V. Lloveras, J. Vidal-Gancedo, D. Ruiz-Molina, T. M. Figueira-Duarte, J. Nierengarten, J. Veciana and C. Rovira, Faraday Discuss., 2006, 131, 291
DOI: 10.1039/B506678F

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