Quenching of Confined C480 Dye in the Presence of Metal-Conjugated γ-Cyclodextrin

被引：17

作者：

Sen, Tapasi ^{[1
]}

Haldar, Krishna Kanta ^{[1
]}

Patra, Amitava ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Dept Mat Sci, Kolkata 700032, India

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 26期

关键词：

ENERGY-TRANSFER; SOLVATION DYNAMICS; QUANTUM DOTS; DONOR; POLYMER;

D O I：

10.1021/jp103192r

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：

Here we demonstrate the designing of new optical-based materials having nanotubular gamma-CD aggregates linked by coumarin 480 dyes: Au nanoparticles for light harvesting system. It is found that the fluorescence quenching of the coumarin 480 dye increases from 79 to 99% due to confinement of the dye inside gamma-CD. The formation of the nanotubular structure of C480/CD complex is confirmed by fluorescence anisotropy decay and TEM study. The average decay times of the C480 dye inside gamma-CD in the absence and presence of attached Au nanoparticles are 4.77 and 1.91 ns, respectively, and the rate constant of ET is found to be 3.13 x 10(8) s(-1).

引用

页码：11409 / 11413

页数：5

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