Synthesis, characterization and luminescence study of dimethyl[2-(arylmethyleneimino)phenolato]gallium complexes. Crystal structure of dimethyl[3,4-dimethoxyphenylmethyleneiminophenolato]gallium
作者:Yiying Zhang、Yingzhong Shen、Yueqin Li、Yan Wang、Ye Li、Xian Tao、Huihua Xu
DOI:10.1016/j.ica.2007.12.006
日期:2008.6
Three dimethylgallium complexes of type Me2GaL [L = 3,4-dimethoxyphenylmethyleneiminophenolato (1), 4-butoxylphenyl methyleneiminophenolato (2), 2-pyridylphenolato (3)] have been synthesized by the reaction of trimethylgallium with appropriate N-arylmethyleneiminophenol. The complexes obtained have been characterized by elemental analysis, H-1 NMR, FT-IR and mass spectroscopy, respectively. The solid structure of 1 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 338 and 362 nm upon radiation by UV light. The Electroluminescent properties of diodes using 1-3 as emitters were measured. The blue/green electroluminescence has been observed. (C) 2007 Elsevier B.V. All rights reserved.