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Electrochemiluminescence of Glutathione‐Stabilized Au Nanoclusters Fractionated by Gel Electrophoresis in Water
Author(s) -
Kang Yunjeong,
Kim Joohoon
Publication year - 2020
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201901733
Subject(s) - nanoclusters , electrochemiluminescence , chemistry , electrophoresis , polyacrylamide gel electrophoresis , photochemistry , analytical chemistry (journal) , chromatography , detection limit , organic chemistry , enzyme
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.