title: π-Electron-system-layered polymer: through-space conjugation and properties as a single molecular wire.
abstract: [2.2]Paracyclophane-based through-space conjugated oligomers and polymers were prepared, in which poly(p-arylene-ethynylene) (PAE) units were partially π-stacked and layered, and their properties in the ground state and excited state were investigated in detail. Electronic interactions among PAE units were effective through at least ten units in the ground state. Photoexcited energy transfer occurred from the stacked PAE units to the end-capping PAE moieties. The electrical conductivity of the polymers was estimated using the flash-photolysis time-resolved microwave conductivity (FP-TRMC) method and investigated together with time-dependent density functional theory (TD-DFT) calculations, showing that intramolecular charge carrier mobility through the stacked PAE units was a few tens of percentage larger than through the twisted PAE units.
authors.affiliation: Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto 615-8510, Japan. ymo@chujo.synchem.kyoto-u.ac.jp
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Morisaki
authors.forename: Shizue
authors.initials: S
authors.lastname: Ueno
authors.forename: Akinori
authors.initials: A
authors.lastname: Saeki
authors.forename: Atsushi
authors.initials: A
authors.lastname: Asano
authors.forename: Shu
authors.initials: S
authors.lastname: Seki
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Chujo