PHOTOLUMINESCENCE AND TEMPERATURE-DEPENDENT EMISSION STUDIES OF Au-25 CLUSTERS IN THE SOLID STATE

被引：14

作者：

Shibu, Edakkattuparambil S. ^{[1
]}

Pradeep, Thalappil

机构：

[1] Indian Inst Technol, Dept Chem, DST Unit Nanosci DST UNS, Madras 600036, Tamil Nadu, India

来源：

INTERNATIONAL JOURNAL OF NANOSCIENCE | 2009年 / 8卷 / 1-2期

关键词：

Au-25; Raman spectroscopy; solid; state emission; metal clusters;

D O I：

10.1142/S0219581X09005669

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Effect of ligand exchange on the optical and photoluminescence properties of Au(25)SG(18) (SG-glutathione thiolate) clusters was investigated. A fluorescein-based dye, 5-((2-(and-3)-S-(acetylmercapto)succinoyl)amino)-fluorescein (SAMSA) was anchored on water soluble Au(25)SG(18) clusters by the place exchange reaction and the solid-state emission of the exchange product was studied. Inherent fluorescence image of these clusters was mapped. Organic soluble Au-25(SC2H4Ph) 18 clusters were synthesized as a model system which also showed temperaturedependent solid-state emission, in good agreement with the results from water soluble Au-25 clusters.

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页码：223 / 226

页数：4

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