Proton-Coupled Intramolecular Electron Transfer in Ferrocene-Quinone Conjugated Oligomers and Polymers

Proton-Coupled Intramolecular Electron Transfer in Ferrocene-Quinone Conjugated Oligomers and Polymers 

Macromolecules Containing Metal and Metal-like Elements, 

Volume 2 Organoiron Polymers, Edited By Alaa S. Abd-El-Aziz, 

Charles E. Carraher, Jr., Charles U. Pittman, Jr., John E. Sheats, and Martel Zeldin ISBN 0-471-45078-2 Copyright 2004 John Wiley Sons, Inc. 

For the attainment of marvelous electron transfer processes in the natural sequential potential fields, many noncovalentaly-bound donor-acceptor (DA) systems and covalently-bound DA systems have been previously reported. Most of them are artificial models of the photosynthesis comprising simple assemblies of the dyad (DA) or triad [donor-spacer-acceptor (DSA)] functional molecules with a chromophore such as a porphyrin. The quantum efficiency of such systems is lower ( 25%) compared with the biological systems (=100%), and thus more efforts for constructing more efficient systems are necessary. Some of the covalen-taly-bound DA systems have been designed for the fabrication of molecule-scale devices based on a molecular electron-transport wire and/or highly ordered molecular arrays on the surface. Most of such studies employed the DA nonconju-gated molecules. 

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