binding of Hg 2+ to L 1 and this fluorescence ON response of the donor coumarin moiety
subsequently initiates the TBET process and fluorescence ON response of the Hg 2+ -bound
acceptor rhodamine moiety. To the best of our knowledge, no such example is there in the
literature. … In brief we have demonstrated a completely new optical response mechanism,
where an interrupted PET coupled TBET process has been used for recognition of Hg 2+ …