处于弱结合单体状态的金属离子传感聚合物。

Metal ion-sensing polymer in the weak binding monomer regime.

作者信息

Liu Xingqiang, Zhu Jin

机构信息

Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, China.

出版信息

J Phys Chem B. 2009 Jun 18;113(24):8214-7. doi: 10.1021/jp902951g.

DOI:10.1021/jp902951g

PMID:19459670

Abstract

The field of conjugated polymer-based metal ion sensing has evolved rapidly with many systems developed via fluorescence quenching mechanism. Thus far, demonstrated polymer architectures invariably entail the main-chain or side-chain incorporation of strong binding sites. We show herein that extraordinary metal ion sensing systems could be created with monomer units in the weak binding regime. Poly(thienylene phenylene) exhibits highly selective fluorescence quenching response toward an environmentally toxic species, Hg2+. Our results offer important clues for expanding the chemical space of intelligent polymer systems.

摘要

基于共轭聚合物的金属离子传感领域发展迅速，许多系统通过荧光猝灭机制得以开发。迄今为止，已证明的聚合物结构总是需要在主链或侧链中引入强结合位点。我们在此表明，在弱结合状态下使用单体单元可以创建出非凡的金属离子传感系统。聚（亚噻吩基亚苯基）对环境有毒物质Hg2+表现出高度选择性的荧光猝灭响应。我们的结果为扩展智能聚合物系统的化学空间提供了重要线索。