Highly sensitive and selective Cu2+ sensor based on electrospun rhodamine dye doped poly(ether sulfones) nanofibers
文献类型： 外文期刊
作者： Min, Minghua 1 ; Wang, Xuefen 2 ; Chen, Yanmo 2 ; Wang, Lumin 1 ; Huang, Hongliang 1 ; Shi, Jiangao 1 ;
作者机构： 1.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Minist Agr, Lab East China Sea & Ocean Fishery Resources Expl, Shanghai 200090, Peoples R China
2.Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
关键词： Sensor;Rhodamine;Fluorescence;Electrospun nanofibers;Cu2+
期刊名称：SENSORS AND ACTUATORS B-CHEMICAL （ 影响因子：7.46； 五年影响因子：6.743 ）
ISSN： 0925-4005
年卷期： 2013 年 188 卷
页码：
收录情况： SCI
摘要： A novel strategy for building a Cu2+ sensor based on electrospun rhodamine dye doped poly(ether sulfones) (PES) nanofibers was reported. The rhodamine dye containing the spirolactam moiety acting as an electron acceptor and salicylaldehyde acting as an electron donor was doped into PES solution, and the mixture was electrospun to obtain a nanofibrous sensor usable in aqueous media for Cu2+. Morphology of the nanofibrous sensor was characterized by SEM, which showed that the nanofibers with a diameter of 250-600 nm formed a non-woven mat. The resultant nanofibrous sensor showed very good sensitivity toward Cu2+ detection, and the limit of quantification (LOQ) was 1.1 x 10(-9) M. Furthermore, other metal ions showed almost no interference. The proposed sensing mechanism has been ascribed to the stabilization of the rhodamine dye after complexation with Cu2+ and a 1:1 stoichiometry has been deduced. This reusable nanofibrous sensor can be utilized conveniently to achieve practical sensing in aqueous medium just like using a test paper. For this approach, the fluorescent probe can be replaced by other one, making this approach a widely applicable strategy for metal ion sensing. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
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