Filamentous Virus Oriented Pyrene Excimer Emission and Its Efficient Energy Transfer.

We present here that pyrene derivative can be arranged in close proximity using M13 virus as framework through click reaction. The observation of excimer emissions of pyrene was a direct evidence for the proper spatial arrangements of chromophores in the architecture, in which both ground-state and excited-state electronic interactions of pyrenes were facilitated. Efficient energy transfer could be induced through the electrostatic interactions between the M13 backbone and the positively charged rhodamine 6G. The investigation of chromophore-modified M13 and its energy transfer process would be beneficial for exploiting the structures of various natural virus and artificially self-assembled virus-like particles. [ABSTRACT FROM AUTHOR]