Abstract
AbstractThree diethylgallium complexes of type Et2GaL [L = N‐(4‐methoxy) benzylidenethiobenzahydrazonato (1), N‐(4‐N,N‐dimethylamino)benzy lidenethiobenzahydrazonato (2) and N‐(9‐anthryl)methylenethio benzahydrazonato (3)] were synthesized by the reaction of triethylgallium with appropriate N‐arylmethylenethiobenzahydrazones. The compounds obtained were characterized by elemental analysis, 1H NMR, IR and mass spectroscopy, respectively. Monolayer light‐emitting diodes based on the diethyl[N‐arylmethylenethio benzahydrazonato]gallium doped poly(vinylcarbazole) were fabricated using a spin coating method. The photoluminescent and electroluminescent emission spectra of 1 and 3 were measured (429 and 479 nm for 1 and 3, respectively). The electroluminescent properties of 1 and 3 were also studied. The electroluminscence bands are located in the blue/green region (465 and 510 nm for complexes 1 and 3, respectively). Copyright © 2006 John Wiley & Sons, Ltd.
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