Microwave-heating synthesis and sensing applications of bright gold nanoclusters

被引：22
作者：
He, Ding-Fei
Xiang, Yang
Wang, Xu
Yu, Xue-Feng [1 ]
机构：
[1] Wuhan Univ, Dept Phys, Key Lab Artificial Micro & Nanostruct, Minist Educ, Wuhan 430072, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2011年 / 46卷 / 12期
关键词：
Nanostructures; Optical materials; Chemical synthesis; Luminescence; Optical properties; AU-25; CLUSTERS; CRYSTAL-STRUCTURE; QUANTUM CLUSTERS; NANOPARTICLES; FLUORESCENT; LUMINESCENCE; SCALE;
D O I：
10.1016/j.materresbull.2011.08.048
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A rapid microwave-heating method has been developed for the synthesis of bright Au nanoclusters by using bull serum albumin as the template in an aqueous environment. The reaction time needed is only 7.0 min, and the weight of the products at one batch can reach 15g. The Au nanoclusters exhibit bright fluorescence at similar to 613 nm with quantum yield of similar to 6.0%. By adjusting the pH value, the products can be controlled to precipitate or re-disperse in aqueous solution. Furthermore, the Au nanoclusters have exhibited high sensitivity and selectivity in the determination of Cu2+ ions in water. These results suggest an efficient method for obtaining metal nanoclusters for the detection and sensing applications. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2418 / 2421
页数：4
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