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化学学报
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化学学报 ›› 2011, Vol. 69 ›› Issue (07): 838-842. 上一篇    下一篇

研究论文

含磺酸根侧链的聚苯乙炔-吡啶类共轭聚合物的荧光传感性能

肖毅，胡玉琴，黄红梅*，尹笃林，肖小明   

  1. (湖南师范大学化学化工学院 化学生物学及中药分析教育部重点实验室 长沙 410081)
  • 投稿日期:2010-06-10 修回日期:2010-10-10 发布日期:2010-12-05
  • 通讯作者: 黄红梅 E-mail:hongmeihuang2003@yahoo.com.cn
  • 基金资助:

    国家自然科学基金项目;湖南省自然科学基金

Fluorescence Sensing Properties of Conjugated Polymer-Pyridyl Inserting Poly(phenylene ethynylene)s with Sulfonate Side-chains

XIAO Yi, HU Yu-Qin, HUANG Hong-Mei-*, YIN Du-Lin, XIAO Xiao-Ming   

  1. (Hunan Normal University, College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Changsha 410081)
  • Received:2010-06-10 Revised:2010-10-10 Published:2010-12-05

PDF

889

被引次数

6

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-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.

关键词: 共轭聚合物, 荧光猝灭, 信号放大

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.

Key words: conjugated polymer, fluorescent quenching, signal amplification

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