SOLVENT-TUNED INTRAMOLECULAR CHARGE-RECOMBINATION RATES IN A CONJUGATED DONOR-ACCEPTOR MOLECULE

被引：54
|
作者：
KHUNDKAR, LR [1 ]
STIEGMAN, AE [1 ]
PERRY, JW [1 ]
机构：
[1] CALTECH, JET PROP LAB, PASADENA, CA 91109 USA
来源：
JOURNAL OF PHYSICAL CHEMISTRY | 1990年 / 94卷 / 04期
关键词：
D O I：
10.1021/j100367a007
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 nonradiative charge-recombination rates from the charge-transfer state of a new conjugated donor-acceptor molecule (p-cyano-p′-methylthiodiphenylacetylene) can be tuned over almost an order of magnitude by varying the polarity of the solvent. These measurements of intramolecular recombination show a turnover of rates as a function of emission energy, consistent with the "normal" and "inverted" behavior of Marcus theory. Steady-state spectra and time-resolved measurements allow us to quantitatively compare thermal and optical electron-transfer rates as a function of driving force and demonstrate their correspondence. © 1990 American Chemical Society.
引用
收藏
页码：1224 / 1226
页数：3
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