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Increasing Electron Transfer Rates with Increasing Donor-Acceptor Distance

Kuss-Petermann, Martin and Wenger, Oliver S.. (2016) Increasing Electron Transfer Rates with Increasing Donor-Acceptor Distance. Angewandte Chemie International Edition, 55 (2). pp. 815-819.

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Abstract

Electron transfer can readily occur over long (≥15 Å) distances. Usually reaction rates decrease with increasing distance between donors and acceptors, but theory predicts a regime in which electron-transfer rates increase with increasing donor–acceptor separation. This counter-intuitive behavior can result from the interplay of reorganization energy and electronic coupling, but until now experimental studies have failed to provide unambiguous evidence for this effect. We report here on a homologous series of rigid rodlike donor-bridge-acceptor compounds in which the electron-transfer rate increases by a factor of 8 when the donor–acceptor distance is extended from 22.0 to 30.6 Å, and then it decreases by a factor of 188 when the distance is increased further to 39.2 Å. This effect has important implications for solar energy conversion.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Wenger)
UniBasel Contributors:Wenger, Oliver and Kuss-Petermann, Martin
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Wiley
ISSN:1433-7851
e-ISSN:1521-3773
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:06 Jun 2018 13:41
Deposited On:11 Jan 2017 13:02

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