Abstract

The dielectric properties of electrochromic composite material based on poly[4,4’-(1,4-phenylene)bis(2,6-diphenylpyridinium)triflate] (PV) and multi-wall carbon nanotubes (MWCNTs) have been studied. Negative permittivity was registered at low frequencies of the alternating electric field (\(10^{-1}{-}10^{3}\) Hz) in the PV/MWCNT nanocomposites of different composition. The frequency of transition from negative to positive permittivity, as well as the values of conductivity, increased in the case of application of direct-current (dc) voltage. The physical mechanism responsible for the unusual properties appears to be related to the delocalized charges located at the multiple insulator–conductor interfaces.

中文翻译：

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碳纳米管电致变色聚三氟甲基吡啶鎓三氟甲磺酸盐复合材料的异常介电性能

摘要

研究了基于聚[4,4'-（1,4-亚苯基）双（2,6-二苯基吡啶鎓）三氟甲磺酸盐]（PV）和多壁碳纳米管（MWCNT）的电致变色复合材料的介电性能。在不同组成的PV / MWCNT纳米复合材料中，在交流电场的低频（\（10 ^ {-1} {-} 10 ^ {3} \） Hz）处记录负介电常数。在施加直流（dc）电压的情况下，从负介电常数到正介电常数的转变频率以及电导率值都会增加。造成异常性质的物理机制似乎与位于多个绝缘体-导体界面的离域电荷有关。