Solvation dynamics of coumarin 480 in bile salt - Cetyltrimethylammonium bromide (CTAB) and bile salt - Tween 80 mixed micelles

被引：29

作者：

Chakrabarty, D ^{[1
]}

Hazra, P ^{[1
]}

Chakraborty, A ^{[1
]}

Sarkar, N ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Kharagpur 721302, W Bengal, India

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2003年 / 107卷 / 49期

关键词：

D O I：

10.1021/jp0360467

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：

We have reported the retardation of solvation dynamics of Coumarin 480 (C-480) in the Stem layer of the cetyltrimethylammonium bromide (CTAB)-sodium deoxycholate (NaDC) and Tween 80-NaDC mixed micelles compared to pure water using picosecond time-resolved emission spectroscopy. The slow solvation dynamics in the Stern layer of the mixed micelles is due to the water molecules confined in the Stern layer, counterions, and interactions of the counterions with the headgroups of the surfactant. The rotational relaxation time of C-480 in these mixed micelles is also investigated. The rotational relaxation times are retarded in the Stern layer of the mixed micelles.

引用

页码：13643 / 13648

页数：6