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研究了水和无水乙醇对萘磺酸掺杂的纳米管结构聚苯胺的电阻率 温度依赖关系的影响 (测量温区为 80—30 0K) .实验结果表明 ,水分子和乙醇分子的进入均使样品的电导率升高 .利用电荷能量限制隧道模型结合纳米管粉末压片的结构特点 ,认为样品电阻主要来源于纳米管间接触电阻 .水或乙醇分子在纳米管聚苯胺中通过与分子链的相互作用 ,增加了链间与链上非局域化载流子的数量 ,增大管间接触界面 ,降低了载流子的隧穿势垒 ,进而提高了导电能力 .但水和乙醇对样品导电性质影响程度是不同的 ,主要是因为水分子和乙醇分子在结构和物理化学性质上的不同
The effects of water and ethanol on the temperature dependence of the resistivity of polyaniline nanotubes doped with naphthalenesulfonic acid (measured at 80-30 0 K) were investigated. The experimental results show that both water molecules and ethanol molecules So that the conductivity of the sample is increased.Considering the structural characteristics of the tunnel model combined with the nanotube powder tablet by the charge energy, the sample resistance is mainly derived from the contact resistance between the nanotubes.Water or ethanol molecules in the nanotube polyaniline by molecular chain , Increasing the number of non-localized carriers in the chain and the chain, increasing the contact interface between the tubes and reducing the tunneling barrier of the carriers, thereby improving the conductivity. However, the water and ethanol pairs The degree of influence on the conductivity of the sample is different, mainly due to the differences in the structural and physico-chemical properties of water molecules and ethanol molecules