Abstract
Novel light-emitting copolymers containing 4- n-butyltriphenylamine and either anthracene, diphenylanthracene or perylene units were synthesized by polycondensation of two types of dibromides in the presence of bis(1,5-cyclooctadiene)nickel(0). The structure and incorporation ratio of the copolymers were determined by 1 H NMR analysis. From the results of yield and molecular weight measured by gel permeation chromatography, the reactivity of arene units with the 4- n-butyltriphenylamine unit shows decreasing tendency in the order diphenylanthracene>anthracene>perylene. The results of ionization potential measurement reveal that the copolymers have not only hole transporting ability but also electron transporting ability. Single-layer electroluminescent devices were fabricated using these copolymers as a charge transporting and light emitting layer.
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