Abstract

Three dimethylgallium complexes of type Me 2GaL [L = 2-methoxylphenylmethyleneiminophenolato ( 1), N-(4- N, N′-dimethylamino)phenylmethyleneiminophenolato ( 2), N-(2-naphthyl)methyleneiminophenolato ( 3)] have been synthesized by the reaction of trimethylgallium with appropriate N-arylmethyleneiminophenol. The complexes obtained have been characterized by elemental analysis, 1H, 13C{ 1H} NMR, IR and mass spectroscopy, respectively. The solid structure of 2 has been determined by X-ray single crystal analysis. The gallium atom was bonded by an oxygen atom and coordinated by an imine nitrogen atom forming one five-membered ring. The stable dimmer was formed by the coordination of bridging oxygen atom of phenolate to another gallium atom. The photoluminescence of complexes 1– 3 were studied. The maximum emission wavelengths of 1– 3 are between 305 and 320 nm upon radiation by UV light. The electroluminescent properties of diodes using 1– 3 as emitting material were measured. The blue/green electroluminescence has been observed.

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