二茂铁在离子液体介质中的电化学行为。

Electrochemical behavior of ferrocene in ionic liquid media.

作者信息

Nagy Lívia, Gyetvai Gergely, Kollár László, Nagy Géza

机构信息

Research Group for Chemical Sensors of the Hungarian Academy of Sciences, University of Pécs, Ifjúság u. 6. H-7601, Hungary.

出版信息

J Biochem Biophys Methods. 2006 Nov 30;69(1-2):121-32. doi: 10.1016/j.jbbm.2006.03.005. Epub 2006 Mar 31.

DOI:10.1016/j.jbbm.2006.03.005

PMID:16650899

Abstract

Chemistry and applicability of ionic liquids (IL), - organic salts with low melting point - are in the focus of interest today. The ILs with melting point below room temperature are expected to be good solvents. Their applicability in organic synthetic work, in separation processes as well as in electrochemistry is very promising. In the work reported here the voltammetric behavior of ferrocene in 1-butyl-3-methylimidazolium hexafluorophosphate (BMIM+ PF6-) ionic liquid has been investigated. Conventional size and micro platinum and carbon electrodes were employed in CV and in chronoamperometric measurements. Karl Fischer method was used for the determination of water content of the solvent. Voltammetric measurements without addition of background electrolyte could be carried out in (BMIM+ PF6-) ionic liquid. A broad potential window could be used. Concentration dependence of the electrochemically determined diffusion coefficient of the ferrocene was observed.

摘要

离子液体（IL）——低熔点有机盐——的化学性质及适用性是当今研究的热点。熔点低于室温的离子液体有望成为优良的溶剂。它们在有机合成工作、分离过程以及电化学中的应用前景十分广阔。在本文报道的工作中，研究了二茂铁在1-丁基-3-甲基咪唑六氟磷酸盐（BMIM⁺PF₆⁻）离子液体中的伏安行为。在循环伏安法（CV）和计时电流测量中使用了常规尺寸的微铂电极和碳电极。采用卡尔费休法测定溶剂的含水量。在（BMIM⁺PF₆⁻）离子液体中可以进行不添加背景电解质的伏安测量。可以使用较宽的电位窗口。观察到了电化学测定的二茂铁扩散系数与浓度的相关性。