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RESORUFIN AS A PROBE FOR THE DYNAMICS OF SOLVATION BY HYDROGEN-BONDING

被引：39
作者：
YU, JW
BERG, M
机构：
[1] Department of Chemistry and Biochemistry, University of Texas at Austin, Austin
来源：
CHEMICAL PHYSICS LETTERS | 1993年 / 208卷 / 3-4期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0009-2614(93)89082-S
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：
Resorufin is shown to be a good Probe solute for the direct measurement of the rates of formation and breaking of solvent-solute hydrogen bonds. In ethanol, a hydrogen-bond equilibration time of 40 ps is found for both the ground and excited states. Deuteration of the solvent has no effect on the equilibration time. The same time is also found in more viscous ethylene glycol solutions, indicating that hydrogen-bond breaking requires only local motion of the bonding moiety.
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页码：315 / 320
页数：6
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