Synthesis of Ag2S and Ag2Se nanoparticles in self assembled block copolymer micelles and nano-arrays fabrication

被引：47

作者：

Anthony, Savarimuthu Philip ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Chem Engn, Pohang 790784, South Korea

来源：

MATERIALS LETTERS | 2009年 / 63卷 / 9-10期

关键词：

Silver chalcogenides; Block copolymer; Micelles; Nano-arrays; Optical properties; SILVER; NANOCRYSTALS; SELENIUM;

D O I：

10.1016/j.matlet.2008.12.051

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper describes a simple approach based on self assembled polystyrene-block-poly(4-vinylpyridine) (PS-P4VP) copolymer micelles for the fabrication of ordered 2-dimesional nano-arrays of Ag2S and Ag2Se. The nanoparticles were synthesized directly inside the P4VP micelles; core at room temperature and nano-arrays were obtained by spin coating on silicon wafer, High resolution-transmission electron microscopy and powder X-ray diffraction characterization suggests the nanoparticles are crystalline. Higher band gap energy (1.76 eV for Ag2S and 1.35 eV for Ag2Se) compared to their bulk materials obtained from the absorption studies reveals that the nanoparticles are within the quantum confinement regime. (c) 2009 Elsevier BY. All rights reserved.

引用

页码：773 / 776

页数：4

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