Visual sensing of picric acid in 100% aqueous media based on supramolecular polythiophene assemblies with colorimetric and fluorescent dual response  

作　　者：Li Zhang Yanan Sun Yanping Jiang Yining Li Gang Song Kunlun Huang Zhiyi Yao 

机构地区：[1]College of Food Science and Nutritional Engineering,China Agricultural University and Key Laboratory of Safety Assessment of Genetically Modified Organism(Food Safety),Ministry of Agriculture,Beijing 100083,China [2]Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources,Guangzhou University,Guangzhou 510006,China

出　　处：《Chinese Chemical Letters》2020年第9期2428-2432,共5页中国化学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.31871877);Chinese Universities Scientific Fund(Nos.2018QC151,2019TC036);the"Talents Scheme"Program of Beijing(No.31050003);the Research Fund Program of Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources(No.2017B030314182)。

摘　　要：A colorimetric and fluorometric dual probe based on a water-soluble polythiophene derivative(PMTPBA)was designed and synthesized.It can be applied to determination of picric acid(PA) in 100% aqueous solution.The approach relies on the formation of supramolecular polythiophene assemblies in the presence of PA through electrostatic,charge transfer and π-π stacking interactions.This probe could be utilized for the rapid and visual detection of PA both in aqueous solution and solid support with high specificity and sensitivity.The detection limit of this sensor is as low as 5.0 × 10^-8 mol/L.

关 键 词：COLORIMETRIC FLUORESCENT Picric acid POLYTHIOPHENE Supramolecular complex 

分 类 号：X830.2[环境科学与工程—环境工程] TS201.6[轻工技术与工程—食品科学]