发光学报2017，Vol.38Issue(10)：1353-1358,6.DOI:10.3788/fgxb20173810.1353
半导体聚合物量子点-亚甲基蓝荧光能量转移体系测定水中Bi3+
Semiconducting Polymer Dots-methylene Blue Fluorescence Energy Transfer System for Determination of Bi(Ⅲ) Ions in Water
摘要
Abstract
A novel fluorescence nanosensor for Bi(Ⅲ) ions determination was developed based on the fluorescence resonance energy transfer from semiconducting polymer dots to methylene blue. The methylene blue attached to semiconducting polymer dots by electrostatic interaction, leading to fluo-rescence quenching of the fluorophores. When Bi ion was added, it coordinated more strongly with the carboxyl-functionalized semiconducting polymer dots than methylene blue, which made the meth-ylene blue detached from semiconducting polymer dots and interrupted luminescence energy transfer, allowing recovery of fluorescence. Such fluorescence responses can be used for well quantifying Bi ions in the range of 0-0. 5 μmol/L with a 16 nmol/L detection limit. The proposed sensing system has been successfully used for the assay of Bi ions in lake water.关键词
半导体聚合物量子点(Pdots)/亚甲基蓝(MB)/荧光共振能量转移/Bi3+Key words
semiconducting polymer dots(Pdots)/methylene blue/fluorescence resonance energy transfer/Bi(Ⅲ) ions分类
化学化工引用本文复制引用
刘义章,孙军勇,王磊,周凯,巩振虎..半导体聚合物量子点-亚甲基蓝荧光能量转移体系测定水中Bi3+[J].发光学报,2017,38(10):1353-1358,6.基金项目
安徽省高校自然科学基金(KJ2016SD45) （KJ2016SD45）
安徽省"省级优秀教学团队"项目(2013JXTD063)资助Supported by Natural Science Foundation of Anhui province (KJ2016SD45) （2013JXTD063）
Excellent Teaching Team Project of Anhui Province (2013JXTD063) （2013JXTD063）
