Solvation dynamics of Coumarin 153 in SDS dispersed single walled carbon nanotubes (SWNTs)

被引：16

作者：

Sengupta, Abhigyan ^{[1
]}

Hazra, Partha ^{[1
]}

机构：

[1] Indian Inst Sci Educ & Res, Dept Chem, Pune 411021, Maharashtra, India

来源：

CHEMICAL PHYSICS LETTERS | 2010年 / 501卷 / 1-3期

关键词：

ANGLE NEUTRON-SCATTERING; ICE-NANOTUBES; LIQUID WATER; MICELLES; SURFACTANTS; SHELL;

D O I：

10.1016/j.cplett.2010.10.049

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 studied the solvation dynamics and rotational relaxation of Coumarin 153 (C-153) in SDS dispersed two different types of single walled carbon nanotubes (SWNTs), namely metallic and semiconducting, using picosecond fluorescence spectroscopy. It has been observed that solvation dynamics of C-153 in SWNTs is severely retarded compared to pure water and SDS micelle. Time resolved fluorescence anisotropy study suggests that C-153 molecules are located on the surface of SWNT, where the rotational motion of the probe is severely hindered compared to SDS micelle due to the restriction imposed by SWNT surface as well as surrounding SDS monomers or SDS half-cylindrical micelles adsorbed on SWNT surface. (C) 2010 Elsevier B. V. All rights reserved.

引用

页码：33 / 38

页数：6

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