Conductivity and thermal-stability of 5-sulfosalicylic acid sodium doped polypyrrole
By varying the dopant-to-pyrrole ratio in a wide range from O to 60％ a series of 5-sulfosalicylic acid sodium doped polypyrrole was synthesized in situ in aqueous solution with ferric chloride as the oxidant. The resulting polypyrroles were characterized with the four-probe, laser light scattering and thermo-gravimetry analysis, differential thermal analysis, respectively. Our results indicate that the particle size plays a determinative role to tune the conductivity in the studied range of dopant concentration; and this series of polypyrrole with size-tuned-conductivity exhibits little less thermal-stability although its size and conductivity changes simultaneously and acutely with the dopant concentration. The association of the conductivity with particle size was interpreted in terms of a theoretical model proposed by Baughman and Shacklelette.
Polypyrrole 5-sulfosalicylic acid sodium Conductivity Particle size Laser light scattering Thermal-stability
Fu-fang Zhou Bao-gai Zhai Chunxu Pan Yuan Ming Huang
College of Physics & Electronic Information, Yunnan Normal University, Yunnan 650092, China Departme Modern Educational Technology Center, Yunnan Normal University, Yunnan 650092, China Department of Physics, Wuhan University, Wuhan, Hubei 430072, China College of Physics & Electronic Information, Yunnan Normal University, Yunnan 650092, China
国际会议
2009 International Symposium on Liquid Crystal Science and Technology(2009国际液晶科技研讨会)
昆明
英文
579-582
2009-08-02（万方平台首次上网日期，不代表论文的发表时间）