title: Preparation, structure, and amphoteric redox properties of p-phenylenediamine-type dyes fused with a chalcogenadiazole unit.
abstract: 4,7-Bis(dialkylamino)benzo[c][1,2,5]chalcogenadiazoles are a novel class of organic dyes that undergo reversible two-stage one-electron oxidation as well as one-electron reduction. They exhibit absorption maxima in the long-wavelength region, which are assigned as intramolecular charge transfer bands from the phenylenediamine moiety to the electron-accepting heterocycle. Their redox properties as well as molecular and crystal structures are affected by the alkyl substituents on the amino nitrogen and/or by the chalcogen atom (O, S, Se) in the heterocycle.
authors.affiliation: Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan. tak@sci.hokudai.ac.jp
authors.forename: T
authors.initials: T
authors.lastname: Suzuki
authors.forename: T
authors.initials: T
authors.lastname: Tsuji
authors.forename: T
authors.initials: T
authors.lastname: Okubo
authors.forename: A
authors.initials: A
authors.lastname: Okada
authors.forename: Y
authors.initials: Y
authors.lastname: Obana
authors.forename: T
authors.initials: T
authors.lastname: Fukushima
authors.forename: T
authors.initials: T
authors.lastname: Miyashi
authors.forename: Y
authors.initials: Y
authors.lastname: Yamashita