Electrochemical anion sensing using electrodes chemically modified with Au(I)-Cu(I) heterotrimetallic alkynyl cluster complexes containing ferrocenyl groups

被引:13
作者
Domenech, Antonio [1 ]
Koshevoy, Igor O. [2 ]
Montoya, Noemi [3 ]
Pakkanen, Tapani A. [2 ]
机构
[1] Univ Valencia, Fac Quim, Dept Quim Analit, E-46100 Valencia, Spain
[2] Univ Joensuu, Dept Chem, FIN-80101 Joensuu, Finland
[3] Univ Valencia, Fac Quim, Dept Quim Inorgan, E-46100 Valencia, Spain
基金
芬兰科学院;
关键词
Gold-copper alkynyl metal clusters; Ferrocenyl units; Selective anion sensing; Electrochemical anion insertion; ION-SELECTIVE ELECTRODES; MATCHED-POTENTIAL METHOD; SOLID-STATE VOLTAMMETRY; TETRACYANOQUINODIMETHANE ELECTRODES; AQUEOUS-SOLUTIONS; 3-PHASE JUNCTION; CARBON PASTE; ZEOLITE-Y; MICROCRYSTALS; MICROPARTICLES;
D O I
10.1007/s00216-010-3734-4
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A novel family of electrochemical anion sensors operating in aqueous media, based on the heterometallic Au (I)-Cu(I) [{Au(3)Cu(2)(C(2)R)(6)} Au(3)(PPh(2)C(6)H(4)PPh(2))(3)](PF(6))(2) (L1, R=Fc; L2, R=C(6)H(4)Fc) alkynyl cluster complexes, is presented. Upon attachment to graphite and gold electrodes, these compounds exhibit a well-defined, essentially reversible, solid-state electrochemistry in contact with aqueous media, based on ferrocenyl-centered oxidation processes involving anion insertion, leading to distinctive pH-independent electrochemical responses for fluoride, chloride, bromide, perchlorate, bicarbonate, carbonate, phosphate, hydrogen phosphate, dihydrogen phosphate, and nitrate anions. Cluster-modified electrodes can be used as potentiometric sensors as a result of the reversible, diffusion-controlled electrochemistry obtained for the anion-assisted electrochemical oxidation of L1 and L2.
引用
收藏
页码:2013 / 2022
页数:10
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