文献类型：期刊文献

英文题名：A dual chemosensor for Cu2+ and Fe3+ based on π-extend tetrathiafulvalene derivative

作者：Ma, Yuwen[1,2];Leng, Taohua[3];Qu, Yarong[1,2];Wang, Chengyun[1,2];Shen, Yongjia[1,2];Zhu, Weihong[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]Shanghai Inst Qual Inspect & Tech Res, Natl Food Qual Supervis & Inspect Ctr Shanghai, Shanghai 200233, Peoples R China

年份：2017

卷号：73

期号：1

起止页码：14

外文期刊名：TETRAHEDRON

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000390633100003)】；

基金：This work is sponsored by Natural Science Foundation of Shanghai (16ZR1408000), and the National Natural Science Foundation of China (No. 21576087).

语种：英文

外文关键词：n-extend tetrathiafulvalene; Dual chemosensor; Copper (II); Iron (III)

摘要：A new dual chemosensor (TTF-PBA) for Fe3+ and Cu2+ in different signal pathways was designed and synthesized. The absorption spectrum, fluorescence spectrum and cyclic voltammograms changed in the presence of Cu2+ and Fe3+. The optical color changed within 5 s from yellow to orange upon the addition of Cu2+, and it changed to dark yellow when Fe3+ existed. The cyclic voltammogram of Cu2+/TTF-PBA changed from E-ox = 0.50 V, E-red = 0.32 V to E05 = 0.64 V, E-red = 0.80 V (vs Ag/AgCl) upon the addition of 2.0 equiv. Cu2+. As for Fe3+/TFF-PBA, its oxidation wave disappeared, and its reduction wave appeared at E-red = -0.59 V (vs Ag/AgCl) upon the addition of 4.0 equv. Fe3+. The sensor displayed high selectivity for Cu2+ and Fe3+ over other ions including Pb2+, Zn2+, Ni2+, Ag+, Cr3+, Mn2+, Al3+, Co2+, Pd2+, Hg2+, Fe2+, Cd2+, Ce3+, Bi3+ and Au3+, the detection limits for Cu2+ and Fe3+ ion reached as low as 5.33 x 10(-7) mol/L and 5.34 x 10(-7) mol/L, respectively. Furthermore, when Fe3+ existed, Cu2+ can be detected sequentially by the sensor through the absorption spectrum and the color change observed by naked-eyes. (C) 2016 Elsevier Ltd. All rights reserved.