title: Proton Conductive Nanosheets Formed by Alignment of Metallo-Supramolecular Polymers.
abstract: Linear Fe(II)-based metallo-supramolecular polymer chains were precisely aligned by the simple replacement of the counteranion with an N,N'-bis(4-benzosulfonic acid)perylene-3,4,9,10-tetracarboxylbisimide (PSA) dianion, which linked the polymer chains strongly. A parallel alignment of the polymer chains promoted by the PSA dianions yielded nanosheets formation. The nanosheets' structure was analyzed with FESEM, HRTEM, UV-vis, and XRD in detail. The nanosheets showed more than 5 times higher proton conductivity than the original polymer due to the smooth ionic conduction through the aligned polymer chains. The complex impedance plot with two semicircles also suggested the presence of grain boundaries in the polymer nanosheets.
authors.affiliation: Electronic Functional Materials Group, National Institute for Materials Science (NIMS) , Tsukuba 305-0044, Japan.
authors.forename: Rakesh K
authors.initials: RK
authors.lastname: Pandey
authors.affiliation: Electronic Functional Materials Group, National Institute for Materials Science (NIMS) , Tsukuba 305-0044, Japan.
authors.forename: Utpal
authors.initials: U
authors.lastname: Rana
authors.affiliation: International Center for Materials Nanoarchitectonics (MANA), NIMS , Tsukuba 305-0044, Japan.
authors.forename: Chanchal
authors.initials: C
authors.lastname: Chakraborty
authors.affiliation: International Center for Materials Nanoarchitectonics (MANA), NIMS , Tsukuba 305-0044, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Moriyama
authors.affiliation: Electronic Functional Materials Group, National Institute for Materials Science (NIMS) , Tsukuba 305-0044, Japan.
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Higuchi
keywords: impedance; ionic conductivity; metallo-supramolecular polymer; polymer nanosheet; proton conductivity