Photoconductivity of Vinyl Polymers with Large Pendant π-Electron Systems. I. Poly-9-vinylacridine
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概要
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The dark- and photo-conductivities of poly-9-vinylacridine (PVAcr) were investigated in comparison with those of poly-<I>N</I>-vinylcarbazole (PVCz). The dark current was ohmic over the whole voltage region studied up to 150000 V/cm. The photocurrent showed a linear dependence on the applied voltage even in fairly high applied fields up to 130000 V/cm and a spectral dependence corresponding antibatically to the absorption spectrum. The magnitude of the photocurrent with positive electrode illumination (<I>i</I><SUB>ph</SUB><SUP>+</SUP>) was only 1.5–2 times larger than that with negative electrode illumination (<I>i</I><SUB>ph</SUB><SUP>−</SUP>), the behavior differing entirely from that in a PVCz film. The magnitude of the photocurrent of PVAcr was smaller than that of PVCz by several times for <I>i</I><SUB>ph</SUB><SUP>−</SUP> and by a hundred times for <I>i</I><SUB>ph</SUB><SUP>+</SUP>. The poor photoconductivity of PVAcr was attributed both to the high concentration of the excimer-forming site acting as an effective exciton trap and to the poor electron-donating character.
- 公益社団法人 日本化学会の論文
著者
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Okamoto Ken-ichi
Department Of Advanced Materials Science & Engineering Faculty Of Engineering Yamaguchi Universi
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Mikawa Hiroshi
Department of Applied Chemistry, Faculty of Engineering, Osaka University
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Kusabayashi Shigekazu
Department of Applied Chemistry, Faculty of Engineering, Osaka University
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Moriwaki Saburo
Department of Applied Chemistry, Faculty of Engineering, Osaka University
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