First Triazole-Bridged Unsymmetrical Porphyrin Dyad via Click Chemistry

Abstract
Click chemistry has been successfully applied in the synthesis of the first example of a triazole-bridged porphyrin dyad containing N2S2 porphyrin and N4 or ZnN4 porphyrin subunits, and fluorescence study indicated a possibility of singlet−singlet energy transfer from the N4 or ZnN4 porphyrin subunit to the N2S2 porphyrin subunit.