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 H2 L1, H2 L2 and H2 L3 (H2 L1 = 2,6-diacetylpyridine bis (isonicotinoylhydrazone), H2 L2 = 2,6-diacetylpyridine bis (nicotinoylhydrazone) and H2 L3 = 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 H2 L1 and H2 L2 compared to that of their precursors, and the coordination agent H2 L3 showed a 50-fold increase in luminescence intensity compared to that of the starting substances.