• Distance dependence of fluorescence resonance energy transfer

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      https://www.ias.ac.in/article/fulltext/jcsc/121/05/0777-0787

    • Keywords

       

      FRET; graphene; nanotube; tight-binding model.

    • Abstract

       

      Deviations from the usual $R^{-6}$ dependence of the rate of fluorescence resonance energy transfer (FRET) on the distance between the donor and the acceptor have been a common scenario in the recent times. In this paper, we present a critical analysis of the distance dependence of FRET, and try to illustrate the non-$R^{-6}$ type behaviour of the rate for the case of transfer from a localized electronic excitation on the donor, a dye molecule to three different energy acceptors with delocalized electronic excitations namely, graphene, a two-dimensional semiconducting sheet and the case of such a semiconducting sheet rolled to obtain a nanotube. We use simple analytic models to understand the distance dependence in each case.

    • Author Affiliations

       

      R S Swathi1 K L Sebastian1

      1. Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560 012
    • Dates

       
  • Journal of Chemical Sciences | News

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