Dual fluorescence of 2-naphthalenecarboxylic acid in water-organic solvent mixtures

被引：3
|
作者：
Hamai, S
机构：
[1] Department of Chemistry, College of Education, Akita University, 010 Akita, Tegata Gakuen-machi
来源：
CHEMICAL PHYSICS LETTERS | 1997年 / 267卷 / 5-6期
关键词：
D O I：
10.1016/S0009-2614(97)00136-X
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：
In water-ethanol, water-1,4-dioxane, and water-acetonitrile mixtures, neutral 2-naphehalenecarboxylic acid (2NCA) has been found to exhibit dual fluorescence. The two fluorescence bands have been assignable to the locally excited (LE) fluorescence and the intramolecular charge transfer (ICT) fluorescence, respectively. The solvation of 2NCA provided by water molecules seems to induce the ICT fluorescence of 2NCA. Fluorescence decay curves of neutral 2NCA in water and ethanol can be analyzed as a sum of two exponential decays.
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页码：515 / 519
页数：5
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