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In the thesis, nine novel PPV derivates were designed, and seven PPVS were successfully synthesized through Gilch or Wittig reaction. The structure of resulting polymers were derminted by 1H-NMR and Elememt Analysis （EA）. The photophysical and thermal properties were investigated. The main work is concentrated on the following aspects:1. The polymers （P1,P2） containing phenyl and thiophene in main chain were designed and synthesized via Wittig reaction. The ideal polymer has not been gotten, we just got some oligomers.2. A novel kind of hyper-branched copolymer, poly（1,2,4,5- tetravinylenephenylen-co-2-methoxy-5-（2’-ethylhexyloxy）-p-phenyelenevinylene） （ P3, P4, P5） were synthesized by the Gilch polymerization with different monomer ratio, and were characterized by 1HNMR and Elemental Analysis （EA）. P3, P4, P5 showed excellent solubility, good film-formation ability, and high thermal stability. The UV-vis and PL of P3, P4, P5 were blue-shifted on comparison with those of MEH-PPV. The absorption maxima were blue-shifted with the increasing content of 1,3,4,5-substituted benzene rings.3. A novel kind of hyperbranched copolymer,poly（3,6-dinitro-1,2,4,5-tetratinylenephenylen-co-2-methoxy-5-（2-ethylhexyloxy）-p-phenyelenevinylene） P6, P7 and P8 was synthesized by the Gilch polymerization with different monomer ratio and were characterized with 1HNMR and Elemental Analysis （EA）, UV-vis, and photoluminescence （PL） properties of P6, P7, P8 were investigated. The resulting polymers held good film-formation ability and high thermal stability.4. A novel kind of hyper-branched copolymer, poly（1,2,4,5-tetraphenylenevinylene-co-2-methoxy-5-（2’-ethylhexyloxy）-p-phenylveneinyle-co-2,3 -dinitro-p-phenyelenevinylene） （P9） was synthesized by the Gilch polymerization. and were characterized by 1HNMR and Elemental Analysis （EA）, UV-vis, and photoluminescence （PL） properties of P9 was investigated. The polymer held good film-formation ability and high thermal stability.
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