论文部分内容阅读
以聚四苯基卟啉(P-TPP)为敏化剂,研究了2,3-二羧基-双环[2.2.1]-2,5-庚二烯(N)的光化学价键异构化反应,在0.1mol/L的碳酸钠甲醇溶剂中,在适量的P-TPP存在下,可见光照射时,N可以定量地转化为2,3-二羧基四环[2.2.1.0~(2,6).0~(3,5)]庚烷(Q),Q在聚四苯基卟啉钴络合物(Co-P-TPP)催化剂的作用下,又可定量地异构化返回N.分别研究了敏化剂和催化剂用量对反应的影响.通过反应物之间激发态能量的比较及N对P-TPP荧光的猝灭试验,证明光异构化反应是通过电子转移反应机制进行的.
Photopolymerization of 2,3-dicarboxy-bicyclo [2.2.1] -2,5-heptadiene (N) with isomerization of poly (tetraphenylporphyrin) (P-TPP) In the presence of an appropriate amount of P-TPP in 0.1 mol / L sodium carbonate methanol solvent, N can be quantitatively converted into 2,3-dicarboxytetracyclo [2.2.1.0 ~ (2,6 ) .0 ~ (3,5)] heptane (Q), Q can be quantitatively isomerized back to N under the action of the poly-tetraphenylporphyrin cobalt complex (Co-P-TPP) catalyst. The influence of the amount of sensitizer and catalyst on the reaction was studied respectively.According to the comparison of excited state energy between reactants and the quenching experiment of fluorescence of P-TPP by N, it was proved that the photoisomerization reaction was carried out by electron transfer reaction mechanism .