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目的寻找新的具有较高非线性极化率和光损耗小的有机非线性光学(NLO)材料.方法在实验基础上,讨论了不同的有机结构对聚二乙炔(PDA)类材料非线性的影响,如杂原子取代、共轭效应、氢键、亚甲基的弯曲效应、电荷分离状态的芳香性失去、D~A强度等.在此基础上首次合成了6-(2-甲基-4-苯基咪唑)-2,4-己二炔-1-醇.结果实验表明,该二乙炔醇能热聚合光不聚合,单体热稳定性好,聚合物可溶.结论二乙炔醇所表现出的性能与预计的一致.为广泛研究这类化合物的非线性光学性能提供了可能.
Aim To find new organic nonlinear optical (NLO) materials with high nonlinear polarizability and low optical loss. Methods Based on the experiments, the influences of different organic structures on the nonlinearity of polyacetylene (PDA) materials such as heteroatom substitution, conjugation, hydrogen bonding, methylene bending, charge separation Sex loss, D ~ A intensity and so on. On this basis, 6- (2-methyl-4-phenylimidazolium) -2,4-hexadieny-1-ol was synthesized for the first time. The results of experiments show that the diacetylene alcohol can be thermally polymerized without polymerization, the monomer has good thermal stability and the polymer is soluble. Conclusion Diacetylene alcohol showed the same performance as expected. It is possible to study the nonlinear optical properties of these compounds widely.