Mechanisms of metal ion-coupled electron transfer

Redox inactive metal ions acting as Lewis acids can control electron transfer from electron donors (D) to electron acceptors (A) by binding to radical anions of electron acceptors which act as Lewis bases. Such electron transfer is defined as metal ion-coupled electron transfer (MCET). Mechanisms of...

Full description

Saved in:
Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2012-01, Vol.14 (24), p.8472-8484
Main Authors: Fukuzumi, Shunichi, Ohkubo, Kei, Morimoto, Yuma
Format: Article
Language:English
Subjects:
Anions
Binding
Chemistry
Electron transfer
Electron Transport
Exact sciences and technology
General and physical chemistry
Lewis acid
Lewis base
Metal ions
Metals - analysis
Metals - chemistry
Oxygen - chemistry
Physical chemistry
Porphyrins - chemistry
Quinones - chemistry
Radicals
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Redox inactive metal ions acting as Lewis acids can control electron transfer from electron donors (D) to electron acceptors (A) by binding to radical anions of electron acceptors which act as Lewis bases. Such electron transfer is defined as metal ion-coupled electron transfer (MCET). Mechanisms of metal ion-coupled electron transfer are classified mainly into two pathways, i.e. , metal ion binding to electron acceptors followed by electron transfer (MB/ET) and electron transfer followed by metal ion binding to the resulting radical anions of electron acceptors (ET/MB). In the former case, electron transfer and the stronger binding of metal ions to the radical anions occur in a concerted manner. Examples are shown in each case to clarify the factors to control MCET reactions in both thermal and photoinduced electron-transfer reactions including back electron-transfer reactions. This article clarifies mechanisms of metal ion-coupled electron-transfer (MCET) reactions, which provide valuable insights into fine control of electron-transfer reactions by binding metal ions to radical anions of various electron acceptors.
ISSN:1463-9076
1463-9084
DOI:10.1039/c2cp40459a