纳米管结构聚苯胺的电阻率和磁化率  

Resistivity and magnetic susceptibility of nanotubular polyaniline doped with protonic acids

作　　者：龙云泽[1] 陈兆甲[1] 张志明[2] 万梅香[2] 郑萍[1] 王楠林[1] 

机构地区：[1]中国科学院物理研究所极端条件物理实验室,北京100080 [2]中国科学院化学研究所分子科学中心,有机固体实验室,北京100080

出　　处：《物理学报》2003年第1期175-179,共5页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :2 99740 3 7和 5 0 13 3 0 10 )资助的课题~~

摘　　要：研究了用自组装法制备的质子酸掺杂的纳米管结构聚苯胺的电阻率 (ρ)和磁化率随温度变化的依赖关系 ,讨论了质子酸掺杂浓度、不同对阴离子以及苯胺单体与质子酸聚合时反应浓度对纳米管结构聚苯胺电学性质的影响 .实验结果表明 ,lnρ和T- 1 2 呈线性关系 ,不同对阴离子对聚苯胺的电阻率影响很大 ,随着质子酸掺杂浓度以及苯胺单体与质子酸聚合时反应浓度的增大 ,聚苯胺的电阻率明显减小 ;而且 ,其磁化率可以表示为与温度无关的泡利顺磁性和符合居里定律的顺磁性之和 .Nanotubular polyaniline (PANI) doped with protonic acids have been synthesized by a 'template-free' method. The temperature dependence of resistivity (rho) and magnetic susceptibility has been studied. The influences of different protonic acids (counterions), doping concentration and the synthesizing concentration of dopant on resistivity also have been investigated. It is,obvious from experimental, results that In rho is linear against T-1/2. With increasing acidity of protonic acids doping concentration and the synthesizing concentration of dopant, the resistivity of the samples decreases, and the magnetic susceptibility can be written as a sum-of a temperature-independent Pauli spin susceptibility term and a Curie-law term.

关 键 词：纳米管结构 聚苯胺 电阻率 磁化率 自组装 

分 类 号：O488[理学—固体物理]