title: Crystallinity-dependence of ionic conductivity in the ion pairs of a multi-interactive anion.
abstract: Ammonium and sodium salts (ion pairs) of a multi-interactive tri(4-pyridyl)hexaazaphenalenyl anion (TPHAP(-)) showed completely different ion-conductive properties depending on the crystal structure. TPHAP columnar crystals showed a high conductivity of 10(-3) S cm(-1) while retaining their structures even under humid conditions, whereas TPHAP dimer crystals exhibited a conductivity of ∼10(-5) S cm(-1) with crystallinity deterioration. The main unit structures induced by multi-interactivity realized different water accessibility, which explains the differences in their ion conductivity and stability against humidity.
authors.affiliation: The Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), RIST Building 3, 77 Cheongam-Ro, Nam-Gu, Pohang 790-784, South Korea. mkawano@postech.ac.kr.
authors.forename: Gil Ryeong
authors.initials: GR
authors.lastname: Lee
authors.forename: Hiroyoshi
authors.initials: H
authors.lastname: Ohtsu
authors.forename: Jinyoung
authors.initials: J
authors.lastname: Koo
authors.forename: Yumi
authors.initials: Y
authors.lastname: Yakiyama
authors.forename: Moon Jeong
authors.initials: MJ
authors.lastname: Park
authors.forename: Daishi
authors.initials: D
authors.lastname: Inoue
authors.forename: Daisuke
authors.initials: D
authors.lastname: Hashizume
authors.forename: Masaki
authors.initials: M
authors.lastname: Kawano