Long-range photoinduced through-bond electron transfer and radiative recombination via rigid nonconjugated bridges: distance and solvent dependence
作者:Henk Oevering、Michael N. Paddon-Row、Marc Heppener、Anna M. Oliver、E. Cotsaris、Jan W. Verhoeven、Noel S. Hush
DOI:10.1021/ja00245a014
日期:1987.5
separations (R/sub c/) ranging from 7.0-14.9 A. In solvents of medium and high polarity, excitation of the donor D is followed by rapid intramolecular electron transfer. The rate constant (k/sub et/) shows only small dependence upon the solvent polarity (a factor of 2-3 between benzene and acetonitrile, for example) but decreases with increasing separation ranging from >10/sup 11/ s/sup -1/ for a four-bond
The determination of the structure and configuration of bichromophoric compounds with a norbornyloguespacer is presented on the basis of the 1H and 13C chemical shifts and vicinal HH coupling constants.