Luminescent properties of europium and terbium complexes with 2′-hydroxy-4′,6′-dimethoxyacetophenone

Abstract

The novel complexes Eu( L) 3·2H 2O and Tb( L) 3·2H 2O (where L = 2′-hydroxy-4′,6′-dimethoxyacetophenone) were synthesized and characterized by infrared spectroscopy, 1H NMR spectroscopy, TGA/DTA, scanning electron microscopy, elemental analysis and energy dispersive analysis (EDX). The Eu( L) 3·2H 2O on excitation at 354 nm emits bright red luminescent with main peak at 612 nm and Tb( L) 3·2H 2O on excitation at 354 nm emits bright green luminescence with main peak at 547 nm. The luminescence intensity of Eu( L) 3·2H 2O is higher than Tb( L) 3·2H 2O. These complexes emitting red and green luminescence might be used to make the OLEDs for display applications.