Tricolor dual sensor for ratiometrically analyzing potassium ions and dissolved oxygen

被引：11
作者：
Liu, Hongtian [1 ,2 ]
Ning, Juewei [1 ,2 ]
Song, Guangjie [1 ]
Sun, Xiangzhong [1 ]
Su, Fengyu [3 ]
Li, Pengfei [4 ]
Tian, Yanqing [1 ]
机构：
[1] Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[3] Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China
[4] Southern Univ Sci & Technol, Coll Sci, Dept Chem, Shenzhen 518055, Peoples R China
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2020年 / 232卷
基金：
中国国家自然科学基金;
关键词：
Dual sensor; Oxygen scissor; Potassium ion sensor; Fluorescence; Ratiometric sensor; FLUORESCENT SENSOR; NANOSENSORS; SENSITIVITY; MECHANISMS; MEMBRANE; INDEX; LIFE;
D O I：
10.1016/j.saa.2020.118155
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
A potassium ion-oxygen (K+-O-2) dual fluorescent sensing film was developed. The film contains three probes, which are K+ probe (KS), O-2 probe (OS), and reference probe (RP) in a polymer film composed of poly(ethylene glycol) methyl ether methacrylate (PEGMA), poly(ethylene glycol) dimethacrylate (PEGDMA) and methacrylic acid (MAA). The RP showed blue emission, the KS exhibited green emission, and the OS showed red emission. The emission peaks of three probes do not interfere with each other, which enable the sensing film to be used for ratiometrically and quantitatively detecting the concentrations of K+ and dissolved oxygen (DO). The sensing films showed high sensitivity and selectivity to potassium ions over other metal ions and also good sensitivity for DO from deoxygenated to oxygenated conditions. The sensing film was demonstrated to be capable of analyzing K+ and DO concentrations with experimental errors smaller than +/- 8.5% in aqueous solutions, showing the potential applications of the sensing films. (C) 2020 Elsevier B.V. All rights reserved.
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页数：6
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