Designing the Ammonium Cation to Achieve a Higher Hydrophilicity of Bistriflimide-Based Ionic Liquids
A. Mão de Ferro, P. M. Reis, M.R.C. Soromenho, C.E.S. Bernardes, K. Shimizu, A.A. Freitas, J.M.S.S. Esperança, J.N. Canongia Lopes, L.P.N. Rebelo
Phys. Chem. Chem. Phys 2018, 20, 19307-19313.
Abstract
In this work, we have found complete water miscibility for a priori, water immiscible (highly hydrophobic) ionic liquids by chemical manipulation of the quaternary ammonium cation grafted with hydroxyethyl moieties. Specifically, we were able to obtain bistriflimide-based ionic liquids completely miscible with water, even below room temperature. The underlying reason is the full integration of the OH groups of the cation in the continuous H-bonded network of water.
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