title: Transparent and colourless room temperature ionic liquids having high refractive index over 1.60.
abstract: Transparent and colourless ionic liquids with refractive index over 1.60 were synthesised by combining 1-benzyl-3-methylimidazolium or hexyltriphenylphosphonium cations with suitable anions. There is a positive relation between their refractive index and Kamlet-Taft parameters, especially dipolarity/polarisability, suggested as a potential parameter to design ionic liquids with high refractive index.
authors.affiliation: Department of Biotechnology, Tokyo University of Agriculture and Technology, Nakacho, Koganei, Tokyo 184-8588, Japan. ohnoh@cc.tuat.ac.jp.
authors.forename: Yoko
authors.initials: Y
authors.lastname: Kayama
authors.forename: Takahiro
authors.initials: T
authors.lastname: Ichikawa
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Ohno
mesh_terms: D007093:Imidazoles / Q000737:chemistry; D052578:Ionic Liquids / Q000737:chemistry*; D055620:Optical Phenomena; D010720:Phosphines / Q000737:chemistry; D013696:Temperature
chemical_list: C496308:1-benzyl-3-methylimidazolium; D007093:Imidazoles; D052578:Ionic Liquids; D010720:Phosphines