Synthesis and Properties of the Copolymers Containing Both Conjugated Block(PPV) and Nonconjugated Block(PS) Segments

Abstract

Abstract: Three kinks of poly( p-phenylenevinylene)(PPV) copolymers with a conjugated block and nonconjugated polystyrene(PS) were synthesized by p-quinomethane active intermediate. The chemical structure of the copolymers was determined and confirmed by ¹H NMRand FTIR. The introduction of flexible segment PSin the PPVtype of polymer leads to the interruption of conjugation, which shortens the effective conjugated length and improves their solubility and processibility for LEDdevices. In comparison with PPV, the copolymers containing both conjugated and noncojugated segments result in light emission of blue shifting, enhancement of luminescence efficiency and tuning color of emission light. The experiment results indicate that the polymerization of conjugated segment and noncojugated segment by p-quinomethane intermediates is a new and effective synthetic route for the copolymers.

Key words: Copolymer, Active intermediate, Conjugated/nonconjugated, PPV

CLC Number:

O482

TrendMD:

ZHANG Ming, TANG Jie-Cong, LI Guo-Wen, ZHANG Rui-Feng, SHEN Jia-Cong . Synthesis and Properties of the Copolymers Containing Both Conjugated Block(PPV) and Nonconjugated Block(PS) Segments[J]. Chem. J. Chinese Universities, 2002, 23(7): 1409.

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Synthesis and Properties of the Copolymers Containing Both Conjugated Block(PPV) and Nonconjugated Block(PS) Segments

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