Synthesis and characterization of luminescent Eu(HMAP)3·2H2O and Tb(HMAP)3·2H2O complexes

The novel complexes Eu(HMAP) 3 ·2H 2 O and Tb(HMAP) 3 ·2H 2 O (where HMAP = 2′-hydroxy-4′-methoxyacetophenone) are synthesized and characterized by infra red spectroscopy, 1 H NMR spectroscopy, TGA/DTA, SEM and elemental analysis. The qualitative analysis of the complexes to detect the presence of rare earth (Eu, Tb), have been performed by energy dispersive analysis (EDX). The Eu(HMAP) 3 ·2H 2 O on excitation at 354 nm emits bright red luminescence with main peak at 612 nm and Tb(HMAP) 3 ·2H 2 O on excitation at 354 nm emits bright green luminescence with main peak at 547 nm. The luminescence intensity of Eu(HMAP) 3 ·2H 2 O is higher than Tb(HMAP) 3 ·2H 2 O. These complexes emitting red and green luminescence might be used to make the electroluminescent (EL) devices for display applications.