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Vol. 27 No. 8 (2015): Vol 27 Issue 8

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Octanol/Water Partition Coefficients of Pyridinium-Based Ionic Liquids

https://doi.org/10.14233/ajchem.2015.18088
Teng Zhang
Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P.R. China
Yaquan Wang
Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P.R. China

Corresponding Author(s) : Yaquan Wang

yqwang@tju.edu.cn

Asian Journal of Chemistry, Vol. 27 No. 8 (2015): Vol 27 Issue 8

Abstract

Nine pyridinium-based ionic liquids were synthesised, which include 1-butylpyridinium bromide ([BPYR] [Br]), 1-hexylpyridinium bromide ([HPYR][Br]), 1-octylpyridinium bromide ([OPYR][Br]), 1-hexylpyridinium bis(trifluoromethylsulfonyl)imide ([HPYR] [NTf2]), 1-octylpyridinium bis(trifluoromethylsulfonyl)imide ([OPYR][NTf2]), 1-hexylpyridinium trifluoromethanesulfonate ([HPYR] [TFO]), 1-octylpyridinium trifluoromethanesulfonate ([OPYR][TFO]), 1-hexylpyridinium tetrafluoroborate ([HPYR] [BF4]), 1-octylpyridinium tetrafluoroborate ([OPYR][BF4]). The octanol/water partition coefficients (KOWs) of these pyridinium-based ionic liquids were determined by shake-flask method. It is found that the pyridinium-based ionic liquids measured in this work are extremely hydrophilic except for [OPYR] [NTf2]. It is also found that KOWs of [NTf2] ionic liquids were dependent on the concentration and high ionic liquids concentration in water leads to big KOW.

Keywords

Ionic liquids Octanol-water partition coefficients Pyridinium
Zhang, T., & Wang, Y. (2015). Octanol/Water Partition Coefficients of Pyridinium-Based Ionic Liquids. Asian Journal of Chemistry, 27(8), 2819–2822. https://doi.org/10.14233/ajchem.2015.18088
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