In situ formation of phosphorescent molecular gold(I) cluster in a macroporous polymer film to achieve colorimetric cyanide sensing.
In situ formation of phosphorescent molecular gold(I) cluster in a macroporous polymer film to achieve colorimetric cyanide sensing.
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DOI：
10.1021/ac403480q
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发表时间：
2014-01
影响因子：
7.4
通讯作者：
Chenghua Zong;Li Zheng;Wenhui He;Xiaoyan Ren;Chunhuan Jiang;Lehui Lu
中科院分区：
文献类型：
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作者：
Chenghua Zong;Li Zheng;Wenhui He;Xiaoyan Ren;Chunhuan Jiang;Lehui Lu
成功制备了一种能够快速、灵敏、选择性地检测氰化物的高磷光分子Au（I）簇。通过X射线吸收近边结构（XANES）和扩展X射线吸收精细结构（EXAFS）分析，证实了分子Au（I）团簇对氰化物具有优异传感性能的原因。与分子Au（I）簇一起使用的响应机制和氰化物检测中的成本效益提供了几个关键的传感器特征，使得这种基于分子Au（I）簇的传感器与其他氰化物感测方案相比是独特的。重要的是，通过探索固态分子Au（I）簇的磷光性质，我们展示了第一个基于分子金（I）簇的大孔传感膜的例子，用于复杂样品中氰化物的比色检测，包括红酒，咖啡，果汁和土壤。值得注意的是，所制备的传感膜继承了分子Au（I）簇的传感能力，并提供了高的机械灵活性和实时监测木薯生产中氰化物释放的新机会。
A highly phosphorescent molecular Au(I) cluster capable of rapid, sensitive, and selective detection of cyanide has been successfully fabricated. The origin of the outstanding sensing performance of the molecular Au(I) cluster toward cyanide is justified by X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) analyses. The response mechanism employed with the molecular Au(I) cluster and the cost-effectiveness in cyanide detection affords several key sensor features, making this molecular Au(I) cluster-based sensor unique compared to other cyanide sensing schemes. Importantly, by exploring the phosphorescent properties of the molecular Au(I) cluster in solid state, we demonstrate the first example of the molecular gold(I) cluster-based macroporous sensing film for colorimetric detection of cyanide in complex samples, including red wine, coffee, juice, and soil. Remarkably, the as-prepared sensing film inherits the sensing ability of the molecular Au(I) cluster, and offers a high mechanical flexibility and novel opportunities for real-time monitoring cyanide release in cassava manufacturing.