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以二价钯配合物作为催化剂,将2-异丙基氨基-4,6-二(2'-溴-3,4-乙撑二氧噻基)-1,3,5-三嗪分别与1,4-二乙炔基-2,5-二辛氧基苯、1,4-二乙炔基-2,5-二(十二烷氧基)苯、2,7-二(4,4,5,5-四甲基硼烷基)-9,9-二辛基芴交替共聚合成了3种π-共轭聚合物P1,P2和P3.经傅里叶变换红外光谱、氢核磁共振谱、紫外-可见光谱、荧光光谱、循环伏安法、X射线粉末衍射和凝胶渗透色谱等测试手段对其进行了表征,并对聚合物在CHCl3溶液的酸致变色行为进行了研究.结果表明,得到的聚合物在CHCl3中的紫外-可见最大吸收波长分别在443 nm和431 nm处出现.在CHCl3溶液中聚合物P1,P2和P3最大发射峰分别位于507 nm,511 nm和543 nm,其聚合物薄膜的最大发射波长分别为573 nm,557 nm和559nm.与P1和P2相比,P3的酸致变色敏感性高于2个数量级.聚合物P1和P2均在-2.0~0 V出现n-掺杂峰.聚合物X射线衍射谱图显示聚合物均有一定的结晶性.

参考文献

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