Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva 4, Switzerland.
Chemphyschem. 2012 Jun 4;13(8):2001-11. doi: 10.1002/cphc.201200106. Epub 2012 Mar 30.
Molecular systems where several apparently equivalent charge separation pathways exist upon photoexcitation are presented. They encompass MQ(n) (n≥2) architectures, where M is a chromophore and Q an electron transfer quencher (either donor or acceptor), and M-M systems where M acts as both electron donor and acceptor. In all cases, charge separation involves symmetry breaking. The conditions for such process to be operative as well as the origin of the symmetry breaking are discussed.
呈现了分子体系，在光激发时存在几种明显等效的电荷分离途径。它们包括 MQ(n)（n≥2）结构，其中 M 是发色团，Q 是电子转移猝灭剂（供体或受体），以及 M-M 体系，其中 M 既充当电子供体又充当电子受体。在所有情况下，电荷分离都涉及对称性破缺。讨论了这种过程起作用的条件以及对称性破缺的起源。
