Structure and electrical properties of the oriented polyaniline films

被引：0

作者：

机构：

[1] Wan, Meixiang

[2] Li, Ming

[3] Li, Junchao

[4] Liu, Zhenxing

来源：

Wan, Meixiang | 1600年 / Publ by John Wiley & Sons Inc, New York, NY, United States卷 / 53期

关键词：

Anisotropy - Conductive films - Electric conductivity of solids - Infrared spectroscopy - Mathematical models - Photoelectron spectroscopy - Plastic films - Pressure effects - Scanning electron microscopy - Structure (composition) - Thermal effects - X ray analysis;

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摘要：

The structure of oriented polyaniline (PANI) films were characterized by elemental analysis, FTIR, XPS, SEM, and X-ray diffraction, and their electrical properties were measured as a function of the protonation state, elongation ratio, temperature, and applied pressure. A maximum conductivity at room temperature for oriented PANI films can be achieved up to 500 s/cm with conductivity anisotropy as high as 20:1. The temperature dependence of conductivity for both unoriented and oriented films at 77-300 K and applied pressure of 0-11.4 kbar is consistent with the 3-D variable-range hopping model; however, the hopping barrier of oriented films is one order magnitude lower than that of unoriented films. The mechanism of enhanced conductivity for oriented PANI films is discussed.

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