title: Modulation of morphology and conductivity of mixed-valence tetrathiafulvalene nanofibers by coexisting organic acid anions.
abstract: We describe here the facile preparation of conductive casting films consisting of mixed-valence tetrathiafulvalene (TTF) nanofibers. Self-assembled nanofibers of mixed-valence TTF with organic acid anions were grown during film deposition, and the conductivities of the resulting films were significantly altered by the type of the anion. In particular, the casting films containing heptafluorobutyrate, propanesulfonate, and undecanesulfonate work as semiconductors (10(-2) S/cm). It was revealed that anion species played a crucial role in the formation of the nanofibers and the morphology of the film was varied.
authors.affiliation: Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Tanaka
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Kunita
authors.forename: Fumiyasu
authors.initials: F
authors.lastname: Ishiguro
authors.forename: Kensuke
authors.initials: K
authors.lastname: Naka
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Chujo