Wide electrochemical window at the interface between water and a hydrophobic room-temperature ionic liquid of tetrakis[3,5-bis(trifluoromethyl)phenyl]borate

Analytical Chemistry
Naoya NishiTakashi Kakiuchi

Abstract

Ionic liquids composed of a hydrophobic anion, tetrakis[3,5-bis(trifluoromethyl)phenyl]borate (TFPB-), and various aromatic and aliphatic ammonium have been prepared. TFPB salts of N-octadecylisoquinolinium (C18Iq+) and trioctylmethylammonium (TOMA+) show low melting points of 31 and 36 degrees C, respectively, whereas TFPB-based ionic liquids of 1-alkyl-3-methylimidazolium with the alkyl chain length of 5-12 show melting points lower than 90 degrees C. The [C(18)Iq][TFPB]|water (W) and [TOMA][TFPB]|W interfaces have the polarized potential window (ppw) of 0.8 V at 56 degrees C, which is twice as wide as the ppw at the interface between W and room-temperature ionic liquids of bis(perfluoroalkylsulfonyl)imide so far reported. The extension of the ppw by more than 0.4 V to the positive direction enables voltammetric measurements of the ion transfer of relatively hydrophobic anions such as bis(trifluoromethylsulfonyl)imide and bis(pentafluoroethylsulfonyl)imide and of hydrophilic cations such as tetraethylammonium and acetylcholine ions.

References

May 29, 2003·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Hajime Katano, Hirosuke Tatsumi
Nov 26, 2004·Journal of the American Chemical Society·François O LaforgeMichael V Mirkin

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Citations

May 6, 2008·Analytical and Bioanalytical Chemistry·Xiaodong ShangGuanJianbin Zheng
Oct 30, 2008·Analytical and Bioanalytical Chemistry·Rui LiuGui-bin Jiang
Apr 12, 2011·Analytical and Bioanalytical Chemistry·Rajani GourishettyR Daniel Johnson
Oct 22, 2008·Chemical Communications : Chem Comm·Andrew D BallantyneRobert A W Dryfe
Nov 17, 2010·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Manabu ShibataTakashi Kakiuchi
Oct 11, 2008·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Takashi Kakiuchi
Oct 11, 2008·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Naoya NishiTakashi Kakiuchi
Sep 18, 2015·The Journal of Physical Chemistry. B·Toshiyuki OsakaiMasahiro Yamamoto
Oct 23, 2015·Angewandte Chemie·Eva Alvarez de EulateDamien W M Arrigan
Jul 12, 2007·Physical Chemistry Chemical Physics : PCCP·Cesar AliagaSteven Baldelli
Aug 18, 2010·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Takashi KakiuchiNaoya Nishi
Sep 24, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Salma ElhenawyMohamed Hassan
Sep 15, 2009·The Journal of Physical Chemistry. B·Xiuming WuChenxin Cai
Nov 12, 2010·Journal of the American Chemical Society·Yixian WangMichael V Mirkin
Dec 20, 2011·The Journal of Physical Chemistry. B·Shoichi KatsutaYasuyuki Takeda
Jan 18, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Naoya NishiTetsuo Sakka

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