Electrochemiluminescence of Glutathione‐Stabilized Au Nanoclusters Fractionated by Gel Electrophoresis in Water
Yunjeong Kang, Joohoon Kim
Abstract
Abstract 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.
Topics & Concepts
NanoclustersElectrochemiluminescenceChemistryElectrophoresisPolyacrylamide gel electrophoresisPhotochemistryAnalytical Chemistry (journal)ChromatographyDetection limitOrganic chemistryEnzymeNanocluster Synthesis and ApplicationsAdvanced biosensing and bioanalysis techniquesGold and Silver Nanoparticles Synthesis and Applications