Effect of high pressure on enol-keto tautomerization in salicylic acid: A study by steady-state absorption and fluorescence measurements

被引：31
作者：
Bisht, PB
Okamoto, M
Hirayama, S
机构：
[1] KYOTO INST TECHNOL,CHEM LAB,SAKYO KU,KYOTO 606,JAPAN
[2] KYOTO INST TECHNOL,FAC ENGN & DESIGN,SAKYO KU,KYOTO 606,JAPAN
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 1997年 / 101卷 / 44期
关键词：
D O I：
10.1021/jp962989a
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 effects of pressure (0.1-450 MPa) on enol-keto tautomerization reaction in salicylic acid (SA) have been investigated by steady-state absorption, fluorescence emission, and excitation spectroscopy. In dilute solutions, the emission intensity of the keto form of the monomer shows marked increase with pressure. In concentrated solutions, where only dimers are present, only a very small increase in the fraction of the keto form of the dimers is observed by applying high pressures. A possible reaction, mechanism for such a behavior is discussed.
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页码：8850 / 8855
页数：6
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