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Exciplex Formation and Energy Transfer in a Self-Assembled Metal–Organic Hybrid System

Authors

  • Ritesh Haldar,

    1. New Chemistry Unit, Jawaharlal Nehru Centre For Advanced Scientific Research (JNCASR), Jakkur, Bangalore 560064 (India)
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  • K. Venkata Rao,

    1. New Chemistry Unit, Jawaharlal Nehru Centre For Advanced Scientific Research (JNCASR), Jakkur, Bangalore 560064 (India)
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  • Subi J. George,

    Corresponding author
    1. New Chemistry Unit, Jawaharlal Nehru Centre For Advanced Scientific Research (JNCASR), Jakkur, Bangalore 560064 (India)
    • New Chemistry Unit, Jawaharlal Nehru Centre For Advanced Scientific Research (JNCASR), Jakkur, Bangalore 560064 (India)
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  • Tapas Kumar Maji

    Corresponding author
    1. New Chemistry Unit, Jawaharlal Nehru Centre For Advanced Scientific Research (JNCASR), Jakkur, Bangalore 560064 (India)
    2. Molecular Materials Laboratory, Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre For Advanced Scientific Research (JNCASR), Jakkur, Bangalore 560064 (India), Fax: (+91) 80-22082766
    • New Chemistry Unit, Jawaharlal Nehru Centre For Advanced Scientific Research (JNCASR), Jakkur, Bangalore 560064 (India)
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Abstract

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Exciting assemblies: A metal–organic self-assembly of pyrenebutyric acid (PBA), 1,10-phenanthroline (o-phen), and MgII shows solid-state fluorescence originating from a 1:1 PBA–o-phen exciplex. This exciplex fluorescence is sensitized by another residual PBA chromophore through an excited-state energy-transfer process. The solvent polarity modulates the self-assembly and the corresponding exciplex as well as the energy transfer, resulting in tunable emission of the hybrid (see figure).

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