FEMTOSECOND STUDIES OF CHARGE SEPARATION IN PHOTO-EXCITED DCM IN LIQUID SOLUTION

被引:68
作者
ZHANG, H
JONKMAN, AM
VANDERMEULEN, P
GLASBEEK, M
机构
[1] Laboratory for Physical Chemistry, University of Amsterdam, 1018 WS Amsterdam
关键词
D O I
10.1016/0009-2614(94)00562-1
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The solvatochromism of DCM in the fluorescent state has been studied using the femtosecond fluorescent up-conversion technique with a time-resolution of almost-equal-to 150 fs. It is shown that intramolecular charge separation is not complete within 300 fs after the excitation pulse. A significant portion of the charge separation trajectory ( almost-equal-to 30%) is controlled by the solvation process on a picosecond time scale. It is inferred that in photo-excited DCM the locally excited and charge transfer states mix in the strong adiabatic coupling limit in the inverted region.
引用
收藏
页码:551 / 556
页数:6
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