title: Triphosphasumanene Trisulfide: High Out-of-Plane Anisotropy and Janus-Type π-Surfaces.
abstract: A triphosphasumanene trisulfide was designed and synthesized as an out-of-plane anisotropic π-conjugated molecule. Incorporating three anisotropic phosphine sulfide moieties into a sumanene skeleton induced a cumulative anisotropy with a large dipole moment (12.0 D), which is aligned in perpendicular direction with respect to the π-framework and more than twice as large as those of conventional out-of-plane anisotropic molecules. In the crystal, the molecules align to form columnar structures, in which electron-rich and electron-deficient sides of the π-framework face each other. The interactions between the electron-rich surfaces, which contain three sulfur atoms, and Au(111) were examined by X-ray photoelectron spectroscopy.
authors.affiliation: Department of Chemistry, Graduate School of Science and Engineering, Saitama University , Shimo-okubo, Sakura-ku, Saitama-city, Saitama 338-8570, Japan.
authors.forename: Shunsuke
authors.identifier: 0000-0001-7531-407X
authors.initials: S
authors.lastname: Furukawa
authors.affiliation: Department of Chemistry, Graduate School of Science and Engineering, Saitama University , Shimo-okubo, Sakura-ku, Saitama-city, Saitama 338-8570, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Suda
authors.affiliation: Department of Natural Science, College of Liberal Arts, International Christian University , Osawa, Mitaka-shi, Tokyo 181-8585, Japan.
authors.forename: Junji
authors.initials: J
authors.lastname: Kobayashi
authors.affiliation: Graduate School of Science and Technology, Gunma University , Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Kawashima
authors.affiliation: Materials Research Center for Element Strategy, Department of Innovative and Engineered Materials, Tokyo Institute of Technology , Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan.
authors.forename: Tomofumi
authors.initials: T
authors.lastname: Tada
authors.affiliation: Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology , Ookayama, Meguro-ku, Tokyo 152-8511, Japan.
authors.forename: Shintaro
authors.initials: S
authors.lastname: Fujii
authors.affiliation: Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology , Ookayama, Meguro-ku, Tokyo 152-8511, Japan.
authors.forename: Manabu
authors.initials: M
authors.lastname: Kiguchi
authors.affiliation: Department of Chemistry, Graduate School of Science and Engineering, Saitama University , Shimo-okubo, Sakura-ku, Saitama-city, Saitama 338-8570, Japan.
authors.forename: Masaichi
authors.initials: M
authors.lastname: Saito