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利用后重氮偶合反应,将4-(三氟甲基)苯胺的重氮盐与两种具有高苯胺残基密度的环氧树脂类前体聚合物在极性有机溶剂中反应,制备了两种具有高生色团密度的环氧树脂类偶氮聚合物PEP-AZ-CF3和PEP-35AZ-CF3.利用1H-NMR、FTIR、UV-Vis和DSC等分析方法对2种偶氮聚合物结构、热性能及吸收光谱性能进行了分析及表征.研究了在不同波长的激光(488、532及589 nm)照射下,2种偶氮聚合物薄膜光致表面自结构的形成.研究结果表明,入射激光的波长对偶氮聚合物表面自结构现象的形成有明显影响.仅在波长488 nm的偏振激光(线偏振光或圆偏振光)照射下,2种偶氮聚合物薄膜表面能观察到自结构现象.圆偏光比线偏光更有利于诱导表面起伏结构的形成,但形成的表面结构不具备长程取向有序性.聚合物生色团中偶氮键邻位的取代甲基对表面自结构的形成起到阻碍作用.
The diazonium salt of 4- (trifluoromethyl) aniline was reacted with two epoxy type precursor polymers having a high aniline residue density in a polar organic solvent by means of a post diazo coupling reaction to prepare two Azo polymer PEP-AZ-CF3 and PEP-35AZ-CF3 with high chromophore density were synthesized and characterized by 1H-NMR, FTIR, UV-Vis and DSC methods. , Thermal properties and absorption spectra were analyzed and characterized.The formation of self-structure of two kinds of azo polymer films on the surface of the azo films was studied under different irradiation wavelengths of 488, 532 and 589 nm.The results show that, The wavelength of the incident laser has a significant effect on the formation of the azo polymer surface from the structure phenomenon.On the irradiation of polarized laser (linearly polarized light or circularly polarized light) with a wavelength of 488 nm, the surface of the two kinds of azo polymer films can be observed from The circular polarization is more conducive to inducing the formation of surface relief than the linear polarization, but the surface structure does not have the long-range orientation order.The substitution of the methyl group on the ortho-position of the azo bond in the polymer chromophore The formation of a hindrance.