title: Effect of a quaternary ammonium salt on propylene carbonate structure in slit-shape carbon nanopores.
abstract: The effect of addition of tetraethylammonium tetrafluoroborate (Et(4)NBF(4)) on the structure of propylene carbonate (PC) confined in slit-shaped carbon nanopores of activated carbon fiber (pore width = 1.0 nm) was studied by synchrotron X-ray diffraction and reverse Monte Carlo simulation. PC molecules are randomly packed in the slit carbon nanopores of 1 nm in the absence of Et(4)NBF(4). Addition of Et(4)N(+) and BF(4)(-) ions promotes formation of considerably ordered double layers of PC molecules even in the highly restricted slit pore space. PC molecules can accept these ions efficiently. This structural modulation function of PC molecular assemblies should contribute to the evolution of supercapacitance in carbon nanopores.
authors.affiliation: Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
authors.forename: Akimi
authors.initials: A
authors.lastname: Tanaka
authors.forename: Taku
authors.initials: T
authors.lastname: Iiyama
authors.forename: Tomonori
authors.initials: T
authors.lastname: Ohba
authors.forename: Sumio
authors.initials: S
authors.lastname: Ozeki
authors.forename: Koki
authors.initials: K
authors.lastname: Urita
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Fujimori
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Kanoh
authors.forename: Katsumi
authors.initials: K
authors.lastname: Kaneko