Ferrocenyl-sulfonium ionic liquids – synthesis, characterization and electrochemistry†,Dalton Transactions

当前位置： X-MOL 学术 › Dalton Trans. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Ferrocenyl-sulfonium ionic liquids – synthesis, characterization and electrochemistry†
Dalton Transactions ( IF 3.5 ) Pub Date : 2017-12-20 00:00:00 , DOI: 10.1039/c7dt04139j
Alexander Venker _{1,

2,

3,

4} , Tobias Vollgraff _{1,

2,

3,

4} , Jörg Sundermeyer _{1,

2,

3,

4}

Affiliation

New ferrocenylsulfonium cation based ionic liquids were prepared by direct alkylation of the corresponding ferrocenyl-based thioethers with N-alkylbis(trifluoromethanesulfonyl)imides (R′TFSI). This convenient direct access to organometallic sulfonium bis(trifluoromethanesulfonyl)imide (TFSI) salts without the need for ion exchange was chosen in order to obtain highly pure and reversibly redox active room temperature ILs in many cases. In other cases the anion cation interaction in the solid state was studied by XRD analyses. Moreover a diferrocenylmethylsulfonium tetrafluoroborate with two redox active centers was synthesized. The redox chemistry of these sulfonium salts was investigated via cyclic voltammetry. Furthermore, UV-Vis spectra and thermoanalytical data are discussed. The electron-withdrawing sulfonium group is directly bonded to the ferrocenyl unit, therefore this cationic group influences the potential of these ionic liquids in a more pronounced way than being anchored to the ferrocenyl unit via an organic spacer. With their low absorbance in the visible light and reversible, tunable redox potential, these room temperature ILs open perspectives as redox mediators in dye sensitized solar cells (DSSCs), as redox electrolytes in supercapacitors or as overcharge protection additives in batteries.

中文翻译：

二茂铁-离子液体–合成，表征和电化学†

通过将相应的基于二茂铁基的硫醚与N-烷基双（三氟甲磺酰基）酰亚胺（R'TFSI）直接烷基化，制备了新的基于二茂铁ulf阳离子的离子液体。选择这种无需离子交换即可直接直接接触有机金属双（三氟甲磺酰基）酰亚胺（TFSI）盐的方法，是为了在许多情况下获得高纯度且可逆的氧化还原活性室温IL。在其他情况下，通过XRD分析研究了固态下的阴离子阳离子相互作用。此外，合成了具有两个氧化还原活性中心的二铁茂铁甲基s四氟硼酸酯。这些锍盐的氧化还原化学研究了通过循环伏安法。此外，还讨论了紫外-可见光谱和热分析数据。吸电子sulf基团直接键合到二茂铁基单元上，因此，该阳离子基团比通过有机间隔基锚定到二茂铁基单元上的方式更显着地影响这些离子液体的电势。这些室温离子分子在可见光中的吸收率低，并且具有可逆的可调节氧化还原电位，因此它们可作为染料敏化太阳能电池（DSSC）中的氧化还原介体，超级电容器中的氧化还原电解质或电池中的过充保护添加剂打开视野。

更新日期：2017-12-20

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11