PPV derivatives containing fluorene and electroluminescence device with improved luminescence property including the same

摘要

The invention then provides a poly (p- phenylenevinylene) derivative and an organic electroluminescence element having one pairs provided between the electrodes, and then an organic layer containing the compound of formula 1 which comprises a fluorene of formula Ι intended to.; (I); In the above formula, A, B, and C is hydrogen or, regardless of each other, except for a hydrogen or ego,; R ₁ and R ₂ are hydrogen, regardless of each other, a phenyl group, carbon number 1 to 20, a phenyl group is substituted, the alkoxy group having a carbon number of 1 to 20, ethylhexyl group, octyl group such as an alkyl group of a carbon number of 1 to 20 , and the number of carbon atoms is selected from 3 to 21 of the ω- methoxy polyethylene oxy group consisting of draw,; Ar is selected from hydrogen, a phenyl group, carbon number is 1 to 20 alkyl group is a substituted phenyl group, the carbon number is 1 to 20 alkoxy group, a substituted or unsubstituted naphthalene, substituted or unsubstituted diphenyl anthracene, substituted or unsubstituted a phenanthrene, a substituted or unsubstituted indene, substituted or unsubstituted acenaphthene, a substituted or unsubstituted carbazole, a substituted or unsubstituted thiophene, substituted or unsubstituted oxazole, substituted or unsubstituted benzothiophene group, an aryl group, selected from the group consisting of an alkyl group of a carbon number of 1 to 20,; n is an integer from 10 to 10,000.; The organic electroluminescent device according to the present invention at the same time is improved luminous efficiency by solving the reduced light emission characteristics due to low purity of the degradation problems with the material for forming the organic film by heat driving occurring in the element-driving problems, the device reliability is improved . The result is the improved efficiency of light emission.