Electronic structure of disjoint diradical 4,4′-bis(1,2,3,5-dithiadiazolyl) thin films

Kaname Kanai; Hiroyuki Yoshida; Yukiko Noda; Akito Iwasaki; Rie Suizu; Jun’ya Tsutumi; Hiroki Imabayashi; Yukio Ouchi; Naoki Sato; Kazuhiko Seki; Kunio Awaga

doi:10.1039/B916396D

Electronic structure of disjoint diradical 4,4′-bis(1,2,3,5-dithiadiazolyl) thin films

Kaname Kanai,*^a Hiroyuki Yoshida,^b Yukiko Noda,^c Akito Iwasaki,^c Rie Suizu,^c Jun’ya Tsutumi,†^c Hiroki Imabayashi,^b Yukio Ouchi,^c Naoki Sato,^b Kazuhiko Seki^c and Kunio Awaga^c

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^a Research Core for Interdisciplinary Sciences, Okayama University, 3-1-1 Tsushima-naka, Okayama 700-8530, Japan
E-mail: kaname@cc.okayama-u.ac.jp
Fax: +81-86-251-8705
Tel: +81-86-251-8715

^b Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan

^c Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan

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 π-orbital overlap between the stacked dimers therefore evolves into a quasi one-dimensional energy band along the dimer stacking direction.

Physical Chemistry Chemical Physics

Electronic structure of disjoint diradical 4,4′-bis(1,2,3,5-dithiadiazolyl) thin films

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Electronic structure of disjoint diradical 4,4′-bis(1,2,3,5-dithiadiazolyl) thin films

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