Introduction of hydrophilic groups onto the ortho-position of benzoate anions induced phase separation of the corresponding ionic liquids with water.
Ionic liquids (ILs) composed of tetrabutylphosphonium cations and benzoate anion derivatives with hydrophilic hydroxyl or carboxyl groups introduced onto the ortho-position were found to be less hydrophilic and showed phase separation with water, whereas unmodified benzoate-type IL was freely miscible with water.
Department of Biotechnology, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Koganei, Tokyo 184-8588, Japan. ohnoh@cc.tuat.ac.jp.
Takashi
T
Ando
Yuki
Y
Kohno
Nobuhumi
N
Nakamura
Hiroyuki
H
Ohno
D000838:Anions / Q000737:chemistry; D001565:Benzoates / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D052578:Ionic Liquids / Q000737:chemistry*; D015394:Molecular Structure; D014867:Water / Q000737:chemistry*
D000838:Anions; D001565:Benzoates; D052578:Ionic Liquids; D014867:Water