中文摘要：

利用Sonogashira偶合反应合成了两种新的含磺酸根侧链的聚苯乙炔-吡啶类共轭聚合物P1，P2．通过紫外一可见吸收光谱和荧光光谱对其光学性质及cu2＋传感检测进行了研究．结果表明，按一定比例嵌段引入吡啶环的聚合物P1能有效地改善共轭主链的刚性，提高检测的灵敏度，使共轭聚合物具有更优异的荧光化学传感性能．在甲醇溶剂中，P1的荧光能被Cu2＋有效地猝灭，相对单体模型分子PESO3，其响应信号扩大222倍．

英文摘要：

Two new conjugated polymers P1, P2, containing pyridine inserting poly（phenylene ethynylene）s backbone with sulfonate side chains were synthesized by Sonogashira coupling reaction. UV-Vis and fluorescence spectra were employed to study their optical properties and Cu2＋ detection. The results indicate that polymer P1 with pyridyl group entrapped in the conjugated backbone in a certain proportion could effectively modify the rigidity of the conjugated main chain and improve the sensitivity of the Cu2＋ detection. In methanol the fluorescence quenching efficiency of P1 by Cu2＋ is about 222 times greater than that of model monomer PESO3.