AGENȚI DE COORDINARE DE TIP BAZE SCHIFF – SURSE GENERATIVE DE EMISIE

Abstract

This work elucidates the structure-property correlation and comparative study of the photoluminescent activity of three lumonophore Schiff base coordination agents H2L1, H2L2 and H2L3 (H2L1 = 2,6-diacetylpyridine bis(isonicotinoylhydrazone), H2L2 = 2,6-diacetylpyridine bis(nicotinoylhydrazone) and H2L3 = 2,6-diacetylpyridine bis(picolinoylhydrazone)) and their precursors. The fluorescent emissions of both the starting substances and the coordination agents show emission bands in the blue region (500-550 nm). The comparative study of the photoluminescent activity shows a 100-fold increase in the luminescence intensity of the coordination agents H2L1 and H2L2 compared to that of their precursors, and the coordination agent H2L3 showed a 50-fold increase in luminescence intensity compared to that of the starting substances.