We report the electrochemiluminescence (ECL) of water‐soluble individual Au nanoclusters (Au NCs) fractionated by polyacrylamide gel electrophoresis of Au NCs synthesized using glutathione. The individual Au NCs demonstrated unique and significant differences in ECL. Interestingly, they exhibited near‐infrared (near‐IR) ECL that became dominant when the ratio of Au(I) to Au(0) decreased in the individual Au NCs. This indicated that the oxidation states of Au NCs primarily affected the ECL wavelengths of the clusters because the Au(0)‐glutathionate motif in the Au NCs was responsible for the near‐IR ECL emission.

中文翻译：

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谷胱甘肽稳定的金纳米簇的凝胶电泳在水中的化学发光

我们报告了通过谷胱甘肽合成的Au NCs的聚丙烯酰胺凝胶电泳分离的水溶性单个Au纳米簇（Au NCs）的电化学发光（ECL）。各个Au NCs在ECL中显示出独特且显着的差异。有趣的是，当各个Au NC中Au（I）与Au（0）的比率降低时，它们表现出近红外ECL占主导地位。这表明Au NCs的氧化态主要影响簇的ECL波长，因为Au NCs中的Au（0）-谷胱甘肽基序负责近IR ECL发射。