Formation and behavior of intramolecular <i>N-</i>(styrylalkyl)aniline exciplexes
作者:Frederick D. Lewis、Jill M. Wagner-Brennan、Alan M. Miller
DOI:10.1139/cjc-77-5-6-595
日期:——
investigated and for one of the three secondary anilines. More rapid exciplex formation in nonpolar vs. polar solvents is attributed to the necessity of desolvating the polar aniline singlet in polar solvents. Intramolecular adduct formation is the major photochemical process for the secondary anilines, but is highly inefficient for the tertiary anilines. The behavior of the intramolecular aniline-styrene
已经研究了几种苯胺间隔物-苯乙烯分子的光物理和光化学行为,其中间隔物是短的聚亚甲基链。长波长激发选择性地激发苯胺发色团,苯胺发色团被苯乙烯分子内淬灭以产生分子内激发复合物。对于所研究的三级苯胺和三种二级苯胺之一,均观察到 Exciplex 荧光。在非极性与极性溶剂中更快速的激基复合物形成归因于极性苯胺单线态在极性溶剂中去溶剂化的必要性。分子内加合物的形成是二级苯胺的主要光化学过程,但对三级苯胺的效率非常低。