The electronic structure of high molecular weight substituted silane polymers in solution: Fluorescence quenching studies

Abstract

A number of electron-deficient small molecule additives quench the fluorescence of substitute silane high polymers in solution in a fashion consistent with an electron transfer mechanism. The measured rate constants are, however, often much larger than expected for diffusion control. This effect has been attributed to rapid energy transfer among the chromophoric segments comprising the polymer chain. This hypothesis is further supported by quenching studies of photoexcitcd 9,10-dicyanoanthraccne, where the excitation is localized, by ground state substituted silane polymers and oligomers. © 1992, IUPAC