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ESR studies of polyacenic semiconductive material |
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| Authors: | K. Tanaka K. Yoshizawa T. Koike T. Yamabe J. Yamauchi Y. Deguchi S. Yata |
| Affiliation: | Department of Hydrocarbon Chemistry, Faculty of Engineering, Kyoto University, Sakyo-ku, Kyoto 606, Japan;College of Liberal Arts and Sciences, Kyoto University, Sakyo-ku, Kyoto 606, Japan;Development Laboratories, Kanebo Ltd., Miyakojima-ku, Osaka, 534, Japan |
| Abstract: | ESR measurements have been performed on the polyacenic material prepared by the pyrolytic treatment of phenol-formaldehyde resin. Six kinds of samples (A)-(F) with various electrical conductivity (σ) were employed for the measurements. Each sample shows a single narrow line, the g-values of which suggest the existence of unpaired electrons of π-type. If the sample (F) (σ = 1 × 10° S cm?1) the single narrow line becomes drastically diminished in the presence of a small amount of oxygen. |
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