文献类型：期刊文献

英文题名：Fluorescent electronic tongue supported with water-borne polyurethane for the discrimination of nitroaromatics in aqueous solution

作者：Yang, Tao[1];Feng, Chuying[1];Zhao, Peng[1];Wu, Yusen[1];Ding, Yun[1];Wang, Guiyou[1];Hu, Aiguo[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China

年份：2020

卷号：8

期号：7

起止页码：2500

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY C

收录：;EI(收录号：20201008263532);WOS:【SCI-EXPANDED(收录号:WOS:000517258900029)】；

基金：The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (21674035), the Fundamental Research Funds for the Central Universities (22221818014) and Shanghai Leading Academic Discipline Project (B502). AH thanks the "Eastern Scholar Professorship" support from the Shanghai local government. TY thanks Xianghong Xu for his kind help in the preparation of WPU.

语种：英文

外文关键词：Fluorescence quenching - Discriminant analysis - Emission spectroscopy - Polyurethanes

摘要：Fluorescent electronic tongues are designed for the quick discrimination of nitroaromatics in aqueous solution through fluorescence quenching of soluble conjugated polymeric nanoparticle (SCPN) arrays supported with water-borne polyurethane. The quenching efficiencies dominantly depend on the overlap of the absorbance spectra of the nitro-analytes and the emission spectra of the SCPNs, as well as the LUMO level of the nitro-analytes. The unique quenching responses towards eight nitroaromatics were recorded by reading the RGB values and then the differences were analyzed by linear discriminant analysis (LDA). The fluorescent electronic tongues showed high sensitivity towards the nitroaromatics in a relatively low concentration of 0.1 mM with rapid response time (within minutes of exposure time). In the prediction test of unknown nitro-analytes via the leave-one-out cross-validation method, the evaluation accuracy reached 100% within the test scope, suggesting that the fluorescent electronic tongues in this work are promising for quick sensing and identifying nitroaromatics in wastewater for field use.