Solubilization of Cationic Hemicyanine Dyesin Anionic Surfactant Micelles: A Partitioning Study

被引：0
|
作者：
Kashif Naeem
Syed S. Shah
Syed W. H. Shah
Gul M. Laghari
机构：
[1] Department of Chemistry,
[2] Quaid-i-Azam University,undefined
[3] Islamabad 45320,undefined
[4] Pakistan,undefined
来源：
Monatshefte für Chemie / Chemical Monthly | 2000年 / 131卷
关键词：
Keywords. Absorption spectra; Dyes; Partition coefficient; SDBS; Solubilization.;
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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°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.
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页码：761 / 767
页数：6
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