Electrical Properties of Poly(dA)$\cdot$Poly(dT) and Poly(dG)$\cdot$Poly(dC) DNA Doped with Iodine Molecules
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概要
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Electrical resistivity of Poly(dA)$\cdot$Poly(dT) and Poly(dG)$\cdot$Poly(dC) DNA were measured in a vacuum on nano-gap electrodes separated by 30–50 nm. The DNAs showed very low conductivity of less than 0.1 pA at 1 V. On the other hand, I2-doped Poly(dA)$\cdot$Poly(dT) and Poly(dG)$\cdot$Poly(dC) DNA form conducting DNAs, the current of which increased with an increase in the doping time. Doped Poly(dG)$\cdot$Poly(dC) DNA shows higher current than doped Poly(dA)$\cdot$Poly(dT) DNA. Time dependence of resistivity of Poly(dG)$\cdot$Poly(dC) DNA doped with iodine molecules exhibited that the total current composes of both hole current and ion current.
- 2003-03-01
著者
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Lee Hea-yeon
The Institute Of Scientific And Industrial Research Osaka University
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Kawai Tomoji
The Institute Of Science And Industrial Research (isir-sanken) Osaka University
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Tanaka Hidekazu
The Institute Of Scientific And Industrial Research Osaka University
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TANIGUCHI Masateru
The Institute of Scientific and Industrial Research (ISIR), Osaka University
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Tanaka Hidekazu
The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
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