ELECTROLUMINESCENT MATERIAL COMPRISING LUMINESCENT ORGANIC AGENT Russian patent published in 1999 - IPC

FIELD: luminescent materials comprising luminescent agent. SUBSTANCE: described is new electroluminescent material consisting of injecting electron layer, active luminescent layer based on chelate metal complex, vacancy transport layer and vacancy injection layer. Luminescent layer is metal complex and bis (2-hydroxybenzilidene)-1,2-phenylene diamine derivative of formula I: N,N′ wherein M is Zn, Cd, Mg; R₁-R₄ are independently H, C₁-C₅-n-alkyl, isopropyl, tert-butyl, phenyl unsubstituted or substituted by halogen, methyl, tert-butyl, methoxy group, ethoxy group, dimethylamino group, diethylamino group, 1-napthyl, 2-napthyl, nutrile group; R₅ is H, C₁-C₅-n-alkyl; R₆ is H, C₁-C₁₈-n-alkyl; R₇-R₈ are independently H, C₁-C₁₈-n-alkyl unsubstituted phenyl, C₁-C₈-n-alkoxy group, dimethylamino group; C₇-C₈ is -(CH₂)_n wherein n is 3-5; R₇+R₈ is C(CH₃)₂-(CH₂)₂-C(CH₃)₂. EFFECT: higher heat stability of the electroluminescent material having green spectral irradiation. 3 cl, 3 ex, 1 tbl