title: Ionic liquid-modified dyes and their sensing performance toward acids in aqueous and non-aqueous solutions.
abstract: Six ionic liquid (IL)-modified dyes were synthesized and characterized. Compared to the methyl red and methyl orange, these IL-modified [MR](-)- or [MO](-)-based dyes exhibit lower melting points and enhanced solubility, and can be used as sensitive indicators towards free proton in both aqueous and non-aqueous solutions. This work also supplies a new concept of developing novel modified materials with the ILs.
authors.affiliation: Centre for Green Chemistry and Catalysis, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
authors.forename: Qinghua
authors.initials: Q
authors.lastname: Zhang
authors.forename: Shiguo
authors.initials: S
authors.lastname: Zhang
authors.forename: Shimin
authors.initials: S
authors.lastname: Liu
authors.forename: Xiangyuan
authors.initials: X
authors.lastname: Ma
authors.forename: Liujin
authors.initials: L
authors.lastname: Lu
authors.forename: Youquan
authors.initials: Y
authors.lastname: Deng