Solubilization of cationic hemicyanine dyes in anionic surfactant micelles: A partitioning study

被引：31
|
作者：
Naeem, K [1 ]
Shah, SS [1 ]
Shah, SWH [1 ]
Laghari, GM [1 ]
机构：
[1] Quaid I Azam Univ, Dept Chem, Islamabad 45320, Pakistan
来源：
MONATSHEFTE FUR CHEMIE | 2000年 / 131卷 / 07期
关键词：
absorption spectra; dyes; partition coefficient; SDBS; solubilization;
D O I：
10.1007/s007060050023
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Cationic hemicyanine dyes of the 1-methyl-4-(4-(di-n-alkylamino)-styryl) pyridinium betain type (alkyl group = methyl to butyl) have been investigated by differential spectroscopy in order to ascertain their solubilization in aqueous micellar solution of sodium dodecylbenzene sulfonate (SDBS). The differential absorption spectra were recorded as a function of surfactant concentration at 25.0 degrees C. Thermodynamic parameters were calculated from partition coefficient data. The results show that cationic hemicyanine dyes are solubilized at the micellar surface, indicating an electrostatic interaction between dyes and surfactant micelles.
引用
收藏
页码：761 / 767
页数：7
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