Effect of the polar groups in the non-degenerate π-conjugated pendant of vinyl copolymers

The interest of coploymeric electroluminescent diodes (PELDs) has much increased to improve the quantum efficiency. To understand charge transport and EL properties of the copolymer with non-degenerate π-conjugated pendants, new vinyl copolymers for light-emitting diodes with polar groups were prepared by radical copolymerization of vinyl(9-carbazole) and vinyl derivatives such as vinyl-benzyl chloride, styrene, (4-methyl)styrene.