A selective sensor for cyanide ion (CN?/sup>) based on the inner filter effect of metal nanoparticles with photoluminescent carbon dots as the fluorophore

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• 作者：Jia Zhang ; Liang Dong ; Shu-Hong Yu
• 关键词：Carbon dots ; Biomass ; Cyanide ; Inner filter effect ; Metal nanoparticles
• 刊名：Chinese Science Bulletin
• 出版年：2015
• 出版时间：April 2015
• 年：2015
• 卷：60
• 期：8
• 页码：785-791
• 全文大小：1,386 KB
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• 作者单位：Jia Zhang (1)
  Liang Dong (1)
  Shu-Hong Yu (1) (2)
  
  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. 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
  
• 刊物主题：Science, general; Life Sciences, general; Physics, general; Chemistry/Food Science, general; Earth Sciences, general; Engineering, general;
• 出版者：Springer Berlin Heidelberg
• ISSN：1861-9541

文摘

Herein, we report a plasmonic metal nanoparticle-involved sensor for cyanide ion based on the inner filter effect by using photoluminescent carbon dots as the signal reporter. With commercial bee pollen as the carbon resource, we synthesized photoluminescent nitrogen-doped carbon dots by a one-pot hydrothermal process, and their fluorescence quantum yield reached as high as 10.2?%?±?0.5?%. Fluorescence measurements indicated that the fluorescence of the carbon dots was insusceptible to the presence of many environmentally ordinary ions. Thanks to this “inert-property, we then developed a turn-on fluorescent sensor for cyanide ion in an inner filter effect manner by using carbon dots as the fluorophore and gold or silver nanoparticle as the light absorber. This detection technique is expected to be used for other metal nanoparticles–carbon dots ensemble fluorescent assays.