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
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.
引用
收藏
页码:1771 / 1784
页数:14
相关论文
共 45 条