Objectives & Goals
Radiative pathways in photoactive chromophores can be tuned by introducing rigidity of the molecular backbone through either covalent or non-covalent interactions. Such tailoring of chemical interactions provides opportunities to optimize the optoelectronic properties inherent to the electronic structure of a fluorophore. We have been developing conformational and configurational switches having intramolecular dissimilar H-bonds that can be activated either by chemically or photochemically leading to alteration of photophysical property of the dye.
We have successfully demonstrated conformational switching via intramolecular H-bonds which modulates fluorescence lifetime in a coumarin-imidazole conjugate. This results has been communicated to international journal (JPC) and currently under review.