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化学学报
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化学学报 ›› 1988, Vol. 46 ›› Issue (2): 191-194. 上一篇    下一篇

研究论文

疏水作用对光化学和光物理过程的影响II: 不良溶剂中长链水杨酸烷基酯的簇集和荧光光谱的变化

欧阳心心;佟振合   

  1. 中国科学院感光化学研究所
  • 发布日期:1988-02-15

Hydrophobic effects on photophysical and photochemical processes II: Aggregation and fluorescence spectra of long chain alkyl salicylates in poor solvents

OUYANG XINXIN;DONG ZHENHE   

  • Published:1988-02-15

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424

本文报道证明长链分子在不良溶剂中发生簇集的实验事实.长链水杨酸烷基酯在二甲基亚砜-水(DMSO-H2O)和乙二醇-水(EG-H2O)混合溶剂中的荧光光谱分布以及荧光量子产率与短链水杨酸烷基酯的显著不同,这些差别可以用长链分子发生簇集来加以解释.

关键词: 水, 乙二醇, 光化学, 集聚, 羧酸酯, ＤＭＳＯ, 溶剂效应, 水杨酸 P, 疏水性质, 荧光分光光度法

The fluorescence spectra of alkyl salicylates I (R = Me, Bu, octyl, dodecyl, hexadecyl) in organic solvents and DMSO-water as well as ethylene glycol-water mixtures were studied. In the mixed solvents, the fluorescence spectra distribution and fluorescence quantum yields of salicylates with long chain are different from those with short chain, indicating aggregation of long chain salicylates under the experimental conditions.

Key words: WATER, ETHANEDIOL, PHOTOCHEMISTRY, AGGREGATION, CARBOXYLIC ACID ESTER, DMSO, SOLVENT EFFECT, SALICYLIC ACID P, HYDROPHOBIC PROPERTIES, FLUOROSPECTROPHOTOMETRY

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