ABSORPTION AND FLUORESCENCE CHARACTERISTICS OF SOME 2-ARYL-BENZOTHIAZOLES AND 2-HETEROARYL-BENZOTHIAZOLES IN DIFFERENT SOLVENTS AND AT VARIOUS PH VALUES

被引：9
|
作者：
TRALICKULENOVIC, V [1 ]
FISERJAKIC, L [1 ]
LAZAREVIC, Z [1 ]
机构：
[1] UNIV ZAGREB, FAC CHEM ENGN & TECHNOL, HR-10002 ZAGREB, CROATIA
来源：
SPECTROSCOPY LETTERS | 1993年 / 26卷 / 09期
关键词：
BENZOTHIAZOLE; FLUORESCENCE; QUANTUM EFFICIENCY;
D O I：
10.1080/00387019308010775
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The parameters characterizing the absorption and fluorescence of seven 2-substituted benzothiazoles in different solvents and at various acid/base concentrations were studied. It was found that both the kind of substituent and the solvent polarity influenced the changes of the spectral properties of the examined molecules. 2-Aryl substituted benzothiazoles exhibit larger Stokes shifts than 2-heteroaryl derivatives. The linear relationship between solvent polarity and pH values against Stokes shift and fluorescence sensitivity, respectively, was observed. The mostly fluorescent compound was 2-(2-benzofuryl)benzothiazole.
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页码：1771 / 1784
页数：14
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