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Pyng Yu, Xiaoming Wen, Yon-Rui Toh, Jane Huang and Jau Tang Metallophilic Bond-Induced Quenching of Delayed Fluorescence in Au25@BSA Nanoclusters Particle & Particle Systems Characterization 30

Article first published online: 28 FEB 2013 | DOI: 10.1002/ppsc.201200111

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The delayed fluorescence of Au25@bovine serum albumin (BSA) nanoclusters (NCs) is quenched via an effective triplet state electron transfer through the Hg2+-Au+ metallophilic bond. The reduction of the reverse intersystem crossing is the crucial for Hg2+ ion sensor in the fluorescent Au25@BSA NCs. In contrast, the Cu2+ ions do not alter the DF in Au25@BSA NCs because of absent the metallophilic interaction.

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