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本文合成了降冰片二烯和咔唑为侧基的甲基丙烯酸酯共聚物，并与仅带有降冰片二烯侧基的聚甲基丙烯酸酯进行了光异构化反应的对比研究。实验结果表明，当入射光波长小于３５０ｎｍ时，两种降冰片二烯聚合物均发生了光异构化反应；当入射光波长大于３５０ｎｍ时，只有共聚物的降冰片二烯侧基能够异构化为相应的四环烷。利用荧光猝灭实验及化学诱导动态核极化（ＣＩＤＮＰ）等研究了咔唑的敏化机理，利用三氟乙酸作催化剂实现了四环烷的反向异构化。
In this paper, norbornene and carbazole side groups of the methacrylate copolymer was synthesized, and only with norbornene side of the polymethacrylate for the optical isomerization of the contrast study. The experimental results show that when the wavelength of incident light is less than 350nm, both of the norbornene polymers undergo the photoisomerization reaction. When the incident light wavelength is more than 350nm, only the norbornadiene side groups of the copolymer can be isomerized Into the corresponding tetracycloalkane. The sensitization mechanism of carbazole was studied by fluorescence quenching experiment and chemical induced dynamic nuclear polarization (CIDNP). The reverse isomerization of tetracyclobutane was achieved by using trifluoroacetic acid as catalyst.