期刊
MATERIALS RESEARCH BULLETIN
卷 46, 期 12, 页码 2418-2421出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2011.08.048
关键词
Nanostructures; Optical materials; Chemical synthesis; Luminescence; Optical properties
资金
- Natural Science Foundation of China [10904119]
- China Postdoctoral Science Special Foundation [201003498]
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.
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