STUDY OF PREFERENTIAL SOLVATION IN BINARY SOLVENT MIXTURES BY THE SPECTRO-STREAK PICOSECOND TECHNIQUE

被引:37
作者
PETROV, NK [1 ]
WIESSNER, A [1 ]
FIEBIG, T [1 ]
STAERK, H [1 ]
机构
[1] MAX PLANCK INST BIOPHYS CHEM,SPEKTROSKOPIE & PHOTOCHEM KINET ABT,D-37077 GOTTINGEN,GERMANY
关键词
D O I
10.1016/0009-2614(95)00616-C
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
Using the picosecond spectre-streak method we monitored the dynamics of preferential solvation of a charge-transfer dipole in binary mixtures of solvents strongly different in dielectric constant. The observed slow (0.25-1 ns) spectral red-shift of the charge-transfer (exciplex) fluorescence is considered to be mainly due to the formation and the dielectric enrichment of the solvation shell around the dipolar solute molecules by diffusion of polar molecules from the bulk of the solvent mixture.
引用
收藏
页码:127 / 132
页数:6
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