title: Electronic structure of disjoint diradical 4,4'-bis(1,2,3,5-dithiadiazolyl) thin films.
abstract: The electronic structure of the thiazyl diradical, 4,4'-bis(1,2,3,5-dithiadiazolyl) (BDTDA), has been investigated by ultraviolet photoemission spectroscopy. Stacked BDTDA dimers showed an energy band dispersion of about 0.3 eV for the highest occupied molecular orbital in the direction of the surface normal of the BDTDA solid film. The pi-orbital overlap between the stacked dimers therefore evolves into a quasi one-dimensional energy band along the dimer stacking direction.
authors.affiliation: Research Core for Interdisciplinary Sciences, Okayama University, 3-1-1 Tsushima-naka, Okayama 700-8530, Japan. kaname@cc.okayama-u.ac.jp
authors.forename: Kaname
authors.initials: K
authors.lastname: Kanai
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yoshida
authors.forename: Yukiko
authors.initials: Y
authors.lastname: Noda
authors.forename: Akito
authors.initials: A
authors.lastname: Iwasaki
authors.forename: Rie
authors.initials: R
authors.lastname: Suizu
authors.forename: Jun'ya
authors.initials: J
authors.lastname: Tsutumi
authors.forename: Hiroki
authors.initials: H
authors.lastname: Imabayashi
authors.forename: Yukio
authors.initials: Y
authors.lastname: Ouchi
authors.forename: Naoki
authors.initials: N
authors.lastname: Sato
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Seki
authors.forename: Kunio
authors.initials: K
authors.lastname: Awaga