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Microwave-assisted synthesis of photoluminescent glutathione-capped Au/Ag nanoclusters： A unique sensor-on-a-nanoparticle for metal ions, anions, and small molecules
  • ISSN号：0023-074X
  • 期刊名称：《科学通报》
  • 时间：0
  • 分类：O[理学]
  • 作者机构：[1]Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China, [2]Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai201204, China, [3]Key Laboratory of Materials Physics, and Anhui Key Laboratory of Nanomaterials and Nanostructures, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
  • 相关基金：This work is financially supported by the National Basic Research Program of China （Nos. 2014CB931800 and 2013CB931800）, the National Natural Science Foundation of China （Nos. 21407140, 21431006 and 91227103）, and Scientific Research Grant of Hefei Science Center of CAS （No. 2015SRG-HSC038）. J. Zhang appreciates the Grants from the China Postdoctoral Science Foundation （No. 2013M531515） and the Fun- damental Research Funds for the Central Universities （No. WK2060190036）. The authors also thank beamline BL14W1 （Shanghai Synchrotron Radiation Faculty） for providing the beam time.
作者： Jia Zhang[1], Yue Yuan[1], Yu Wang[2], Fanfei Sun[2], Gaolin Liang[1], Zheng Jiang[2], Shu-Hong Yu[1,3]
关键词： Au/Ag, NANOCLUSTERS, microwave, synthesis, x-ray, absorption, near-edge, structure, photoluminescence, sensing
中文摘要：

Even though great advances have been achieved in the synthesis of luminescent metal nanoclusters, it is still challenging to develop metal nanoclusters with high quantum efficiency as well as multiple sensing functionalities. Here, we demonstrate the rapid preparation of glutathione-capped Au/Ag nanoclusters （GS-Au/Ag NCs） using microwave irradiation and their unique sensing capacities. Compared to bare GS-Au NCs, the doped Au/Ag NCs possess an enhanced quantum yield （7.8% compared to 2.2% for GS-Au NCs）. Several characterization techniques were used to elucidate the atomic composition, particulate character, and electronic structure of the fabricated NCs. According to the X-ray photoelectron spectroscopy （XPS） and X-ray absorption near-edge structure （XANES） spectra, a significant amount of Au exists in the oxidized state as Au（I）, and the Ag atoms are positively charged. In contrast to those nanoclusters that detect only one analyte, the GS-Au/Ag NCs can be used as a versatile sensor for metal ions, anions, and small molecules. In this manner, the NCs can be regarded as a unique sensor-on-a-nanoparticle.

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期刊信息
  • 《科学通报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国科学院
  • 主编：周光召
  • 地址：北京东黄城根北街16号
  • 邮编：100717
  • 邮箱：csb@scichina.org
  • 电话：010-64036120 64012686
  • 国际标准刊号：ISSN：0023-074X
  • 国内统一刊号：ISSN：11-1784/N
  • 邮发代号:80-213
  • 获奖情况:
  • 首届国家期刊奖,中国期刊方阵“双高”期刊,第三届中国出版政府奖
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  • 美国化学文摘（网络版）,美国数学评论（网络版）,美国工程索引,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:81792