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  • Author(s):
    Angela Meola, Nicole Hondroglannis, Pierce Brown, Maksym Zhukovskyi, Zheng Zheng, Zeev Rosenzweig, Mary Sajini Devadas

    Icosahedron and [Au25(PPh)10(C6H14S)5Cl2]2+ bi-icosahedron clusters were synthesized. Ligand exchange reactions were carried out with a new coumarin-derived fluorophore (Cou-SH) to label both clusters. Labeled and unlabeled Au25 were compared and the changes in the electronic structure were determined. The labeled clusters showed marked changes in electronic states, as evidenced by the quenching in the UV region and enhancement in the near infrared. The quantum yield from Cou-SH decreased and…

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