title: Self-assembling imidazolium-based ionic liquid in rigid nanopores induces anomalous CO2 adsorption at low pressure.
abstract: An alkylimidazolium-based long-chain ionic liquid (LCIL) was immobilized in silica nanopores via a supramolecular assembly approach. To discuss the characteristic features of LCIL in a confined nanospace, except for the characteristics of the host materials, we have prepared the silica host with monodisperse morphology and a nanostructured system to immobilize LCIL. The nanostructure is composed of three distinct regions: the silica framework, the hydrophobic interior of the alkyl chains, and the organic-inorganic ionic interface. Anomalous CO(2) adsorption sites were found to be well-ordered locations on the ionic interface fabricated by the π-π-stacked imidazolium heads containing inorganic anions and polar silica surfaces.
authors.affiliation: Department of Chemical, Energy and Environmental Engineering, Faculty of Environmental and Urban Engineering, Kansai University, Suita-shi, Osaka 564-8680 Japan. shun_tnk@ipcku.kansai-u.ac.jp
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Tanaka
authors.forename: Koji
authors.initials: K
authors.lastname: Kida
authors.forename: Haruki
authors.initials: H
authors.lastname: Fujimoto
authors.forename: Takashi
authors.initials: T
authors.lastname: Makino
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Miyake
mesh_terms: D000327:Adsorption; D002245:Carbon Dioxide / Q000737:chemistry*; D007093:Imidazoles / Q000737:chemistry*; D052578:Ionic Liquids / Q000138:chemical synthesis* / Q000737:chemistry; D058608:Nanopores; D010316:Particle Size; D011312:Pressure; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D007093:Imidazoles; D052578:Ionic Liquids; D002245:Carbon Dioxide; D012822:Silicon Dioxide