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首页> 外文期刊>RSC Advances >Synthesis of highly fluorescent Cu/Au bimetallic nanoclusters and their application in a temperature sensor and fluorescent probe for chromium(III) ions
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Synthesis of highly fluorescent Cu/Au bimetallic nanoclusters and their application in a temperature sensor and fluorescent probe for chromium(III) ions

机译：高荧光Cu / Au双金属纳米能器的合成及其在铬（III）离子的温度传感器和荧光探针中的应用

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摘要

Bimetallic nanoclusters (BNCs) have attracted great attention due to their cooperative electronic, optical, and catalytic properties. Here, a novel one-step synthetic method is presented to prepare highly fluorescent bimetallic copper-gold nanoclusters (Cu/Au BNCs) in ambient conditions by using glutathione (GSH) as both the reducing agent and the protective layer preventing the aggregation of the as-formed NCs. The resultant Cu/Au BNCs are uniformly dispersed, with an average diameter of 1.5 nm, and it exhibits emission at 450 nm with excitation at 380 nm. Interestingly, the fluorescence signal of the Cu/Au BNCs is reversibly responsive to the environmental temperature, and it shows good sensitivity in the range of 20-70 degrees C (F = -23.96T + 3149.2 (R = 0.94)). Furthermore, it was found that the fluorescence of Cu/Au BNCs was quenched selectively by Cr3+, and a detection method was further developed with detection linear range from 50 nM to 1 mM (F = -174.85[Cr3+] + 1686.69 (R = 0.98)) and high sensitivity (LOD = 10 nM, S/N = 3).
机译：由于合作电子，光学和催化性能，双金属纳米团（BNC）引起了极大的关注。这里，通过使用谷胱甘肽（GSH）作为还原剂和保护层防止谷胱甘肽和保护层的谷胱甘肽（GSH），提出了一种新的一步合成方法以在环境条件下制备高度荧光二金属铜 - 金纳米蛋白（Cu / Au BNC）。 -formeded NCS。所得Cu / Au BNC均匀分散，平均直径为1.5nm，并且它在450nm下发射在380nm的激发下发射。有趣的是，Cu / Au BNC的荧光信号对环境温度可逆地响应，并且在20-70℃的范围内显示出良好的敏感性（f = -23.96t + 3149.2（r = 0.94））。此外，发现通过CR3 +选择性地淬灭Cu / Au BNC的荧光，并通过50nm至1mm的检测线性范围进一步开发检测方法（f = -174.85 [cr3 +] + 1686.69（r = 0.98 ））和高灵敏度（LOD = 10nm，s / n = 3）。

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  • 来源
    《RSC Advances》 |2018年第25期|共6页
  • 作者

    Nie Furong; Ga Lu; Ai Jun; Wang Yong;

  • 作者单位

    Inner Mongolia Normal Univ Coll Chem &

    Envirom Sci 81 Zhaowudalu Hohhot 010022 Peoples R China;

    Inner Mongolia Normal Univ Coll Chem &

    Envirom Sci 81 Zhaowudalu Hohhot 010022 Peoples R China;

    Inner Mongolia Normal Univ Coll Chem &

    Envirom Sci 81 Zhaowudalu Hohhot 010022 Peoples R China;

    Inner Mongolia Normal Univ Coll Chem &

    Envirom Sci 81 Zhaowudalu Hohhot 010022 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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