Electrical Properties of Poly(dA)·Poly(dT) and Poly(dG)·Poly(dC) DNA Doped with Iodine Molecules
Electrical Properties of Poly(dA)·Poly(dT) and Poly(dG)·Poly(dC) DNA Doped with Iodine Molecules
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碘分子掺杂的Poly(dA)·Poly(dT)和Poly(dG)·Poly(dC) DNA的电学性质
DOI：
10.1143/jjap.42.l215
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发表时间：
2003
影响因子：
1.5
通讯作者：
T. Kawai
中科院分区：
文献类型：
--
作者：
M. Taniguchi;HeaYeon Lee;Hidekazu Tanaka;T. Kawai
聚（dA）·聚（dT）和聚（dG）·聚（dC）DNA的电阻率在真空中在间隔30-50 nm的纳米间隙电极上测量。另一方面，I2掺杂的Poly（dA）·Poly（dT）和Poly（dG）·Poly（dC）DNA形成导电DNA，其电流随着掺杂时间的增加而增加。掺杂的Poly（dG）·Poly（dC）DNA比掺杂的Poly（dA）·Poly（dT）DNA具有更高的电流。碘掺杂的Poly（dG）·Poly（dC）DNA的电阻率随时间的变化表明，总电流由空穴电流和离子电流组成。
Electrical resistivity of Poly(dA)·Poly(dT) and Poly(dG)·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)·Poly(dT) and Poly(dG)·Poly(dC) DNA form conducting DNAs, the current of which increased with an increase in the doping time. Doped Poly(dG)·Poly(dC) DNA shows higher current than doped Poly(dA)·Poly(dT) DNA. Time dependence of resistivity of Poly(dG)·Poly(dC) DNA doped with iodine molecules exhibited that the total current composes of both hole current and ion current.