Solvation dynamics of coumarin 480 in vesicles

被引：83

作者：

Datta, A ^{[1
]}

Pal, SK ^{[1
]}

Mandal, D ^{[1
]}

Bhattacharya, K ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Dept Phys Chem, Calcutta 700032, W Bengal, India

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1998年 / 102卷 / 31期

关键词：

D O I：

10.1021/jp980717x

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：

Solvation dynamics of Coumarin 480 (C-480) in dimyristoylphosphatidylcholine (DMPC) vesicles in water is studied using picosecond time-resolved Stokes shift. In sonicated unilamellar DMPC vesicles C-480 exhibits wavelength dependent fluorescence decays. At short wavelengths a fast decay is observed while at the long wavelengths a growth in the nanosecond time scale precedes the decay. The solvation dynamics of C-480 in DMPC vesicles is found to be bimodal with two components of 0.6 and 11 ns, which is similar to the solvation dynamics of C-480 in the large water pools of AOT/n-heptane/water (AOT = aerosol OT) microemulsions.

引用

页码：6114 / 6117

页数：4

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