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通过溶液缩聚反应,合成了一系列含有刚性苯并啞唑环和柔性脂肪链的刚、柔间隔聚合物.通过FT-IR1、H-NMR和TGA等方法对聚合物化学结构和热失重行为进行了表征.发现聚合物分子链中出现了微量未闭环结构,热分解温度有所降低.聚合物溶液的紫外吸收光谱的最大吸收从PBO的429 nm蓝移到PBOC7的291 nm,同时荧光Stokes位移增大.
A series of rigid and soft spacer polymers containing rigid benzotrimethylene rings and flexible aliphatic chains were synthesized by solution polycondensation reaction.The chemical structures and thermogravimetric behaviors of polymers were investigated by FT-IR1, H-NMR and TGA methods The results showed that a small amount of unclosed structures appeared in the molecular chain of the polymer and the thermal decomposition temperature decreased.The maximum absorption of the UV absorption spectrum of the polymer solution shifted from 429 nm in PBO to 291 nm in PBOC7 and the fluorescence Stokes shift Increase.