Evaluating ferrocene ions and all-ferrocene salts for electrochemical applications
Evaluating ferrocene ions and all-ferrocene salts for electrochemical applications
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DOI：
10.1016/j.jorganchem.2019.06.023
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发表时间：
2019-10-01
影响因子：
2.3
通讯作者：
Ziegler, Christopher J.
中科院分区：
文献类型：
--
作者：
Schrage, Briana R.;Zhao, Zhiling;Ziegler, Christopher J.
氧化还原液流电池（RFB）技术等应用的成功高度依赖于新分子策略的发展，许多工作都集中在二茂铁化合物作为RFB组分的化学上。本文介绍了四种由二茂铁阴离子和阳离子组成的“全二茂铁”盐，并评价了它们的溶解性和电化学性质。这四种盐是通过复分解反应形成的，采用（二茂铁甲基）三甲基铵阳离子和单和双磺酸盐或羧酸盐二茂铁阴离子。我们观察到二茂铁组分的电位不仅与取代基有关，而且与溶剂介质有关。特别是，磺酸盐和羧酸盐二茂铁阴离子在水、碳酸亚丙酯（PC）和DMF之间的氧化还原电位表现出显着变化。最值得注意的是，在（二茂铁甲基）三甲基铵1，1 '-双（磺酸根合）二茂铁中，阳离子和阴离子的电势反转，阴离子在水溶液中具有较低的电势，而在有机介质中具有更正的电势。(c)2019由Elsevier B. V.出版
The success of applications such as redox flow battery (RFB) technologies is highly dependent on the development of new molecular strategies, and much work has focused on the chemistry of ferrocene compounds as RFB components. This report presents four "all-ferrocene" salts comprised of ferrocene anions and cations and evaluates their solubility and electrochemical properties. The four salts are formed via metathesis reactions employing the (ferrocenemethyl) trimethylammonium cation and mono and bis sulfonate or carboxylate ferrocene anions. We observed that the potentials of the ferrocene components was not only dependent on the substituent, but also on the solvent medium. In particular, the sulfonate and carboxylate ferrocene anions exhibited significant shifts in redox potential between water, propylene carbonate (PC), and DMF. Most notably, in (ferrocenemethyl) trimethylammonium 1,1'-bis(sulfonato)ferrocene, the potentials of the cation and anion reverse, with the anion having a lower potential in aqueous solution and a more positive potential in organic media. (c) 2019 Published by Elsevier B.V.