金属阳离子对水溶性共轭聚合物的荧光猝灭及其在传感器中的应用。

Fluorescence quenching of water-soluble conjugated polymer by metal cations and its application in sensor.

作者信息

Chen Yan-Guo, Zhao Dan, He Zhi-Ke, Ai Xin-Ping

机构信息

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China.

出版信息

Spectrochim Acta A Mol Biomol Spectrosc. 2007 Feb;66(2):448-52. doi: 10.1016/j.saa.2006.03.021. Epub 2006 Jul 21.

DOI:10.1016/j.saa.2006.03.021

PMID:16859983

Abstract

The effects of different metal cations on the fluorescence of water-soluble conjugated polymer (CP) and their quenching mechanism have been explored. Most transition metal cations, especially noble metal cations, such as Pd2+, Ru3+, and Pt2+ possessed higher quenching efficiency to CP fluorescence than that of the main group metal cations and other transition metal cations, which have filled or half-full outmost electron layer configurations. Base on this, rapid, sensitive detection of noble metal cations can be realized and a novel quencher-tether-ligand (QTL) probe was developed to detect avidin and streptavidin.

摘要

研究了不同金属阳离子对水溶性共轭聚合物（CP）荧光的影响及其猝灭机制。大多数过渡金属阳离子，特别是贵金属阳离子，如Pd2+、Ru3+和Pt2+，对CP荧光的猝灭效率高于主族金属阳离子和其他具有满电子层或半满电子层构型的过渡金属阳离子。基于此，可实现对贵金属阳离子的快速、灵敏检测，并开发了一种新型的猝灭剂-连接体-配体（QTL）探针用于检测抗生物素蛋白和链霉抗生物素蛋白。