In Situ Optical and Magnetic Measurements of Conducting Poly (trans-1,2-di(2-thienyl) ethylene) Prepared by the Electrochemical Polymerization of cis-1,2-di(2-thienyl) ethylene
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概要
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Preparation of high quality conducting poly(c7.s- 1,2-di(2-thienyl)ethylene), cis-PIEfrom the electrochemical polymerization of c7.v-1,2-di(2-thienyl)ethylene was tried.However, synthesized polymer was not cis-PTYF. but trans-PIE. The electrochemical,optical, and magnetic properties in the trans-PIE in comparison with those ofpolythiophene, PT, during electrochemical 7>-type doping have been investigated.These results are discussed in terms of polaron and / or bipolaron models, The bandgap of trans-PIE was evaluated to be about 2.1 eV and almost the same as that ofPT. The polaron states in trans-PIE appear in the band gap: ca. 0.5 eV above thevalence band but ca. 0.8 eV below the conduction band. This result satisfactorily explains the stability of p-type doped trans-PIE compared with that of PT. Since theenergy level of the bottom of conduction band in trans-PIE is higher than that in PTby ca. 0.2 eV, and successful n-type doping in trans-PTE is not expected.
- 社団法人日本物理学会の論文
- 1991-11-15
著者
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Yoshino Katsumi
Department Of Electrical Engineering Faculty Of Engineering Osaka University
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IWASA Toshinori
Department of Electronic Engineering, Faculty of Engineering, Osaka University
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Iwasa T
Faculty Of Engineering Osaka University
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Onoda Mitsuyoshi
Department Of Electrical Engineering And Computer Sciences Graduate School Of Engineering Himeji Ins
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Kawai Tsuyoshi
Department Of Chemistry And Biochemistry Graduate School Of Engineering Kyushu University
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