文献类型：期刊文献

英文题名：Trihexyltetradecylphosphonium Chloride Based Ratiometric Fluorescent Nano-Optodes for Multiplex Anion Discrimination

作者：Liu, Yueling[1,3]; Fan, Jianhua[1,3]; Xu, Huiying[1]; Zhang, Ni[1]; Su, Wei[1]; Zhou, Jinfeng[1]; Qin, Yu[2]; Jiang, Dechen[2]

机构：[1] State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China; [2] State Key Laboratory of Analytical Chemistry for Life science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China; [3] Department of Applied Biology, East China University of Science and Technology, Shanghai, 200237, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220077971)

语种：英文

外文关键词：Beverages - Chlorine compounds - Colorimetry - Fluorescence - Medical applications - Negative ions - Nitrates

摘要：Compared with the well-studied cations, the development of anion detection is relatively slow due to the anion characteristics such as complex geometry, strong hydration and low charge density. Herein, the first demonstration of trihexyltetradecylphosphonium chloride ([THTP][Cl]) based ratiometric anion-selective nano-optodes platform was developed for multiplex anion discrimination. Such nano-optodes without ionophore exhibited a selectivity behavior following the Hofmeister series in which lipophilic anions were more readily co-extracted. To deviate from the Hofmeister pattern, anion ionophores should be introduced to selective complexation of the target anions. As a proof of concept, the organomercury compounds ETH9033 and ETH9009 are employed as model ionophores . The obtained nitrate- and chloride-selective [THTP][Cl]-based nanosensors could provide prominent colorimetric and spectroscopic transformations specifically induced by the anion species. Both fluorescence (I 675 /I 600 ) and absorbance (A 650 /A 600 ) ratios versus concentrations proved the high selectivity towards the major anion. The excellent performance such as high selectivity, wide response range and fast response time enabled the accurate determination of nitrate in mineral waters. More importantly, through simply altering the ionophores, a pool of [THTP][Cl]-based sensing array for extended target anions could be achieved. It provides great potential for anion determination in environmental and biomedical applications. ? 2022, The Authors. All rights reserved.