限制突出了导电聚合物中普遍存在的不同电输运机制
Confinement Highlights the Different Electrical Transport Mechanisms Prevailing in Conducting Polymers
摘要：
研究了聚（3，4-乙撑二氧噻吩）（PEDOT）衍生物在几何约束下的电荷输运动力学差异。聚合物共混物聚（3，4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）和聚合物-单体共混物，聚（3，4-乙撑二氧噻吩）：甲苯磺酸盐的结果，突出了掺杂剂的作用和这些系统的加工条件下的限制。在这些聚合物系统中，特征尺寸的受限几何结构中的普遍传输长度尺度源于不同的无序。通过分子水平重组引入的两种不同PEDOT中的这些可观察到的差异可用于调节导电聚合物系统以获得有效的电学和热电性质。在不同的频率ω和温度T下，研究了不同通道直径的圆柱形氧化铝纳米支架中聚合物体系的电导率σ，σ是分子水平上电子结构和连接性参数的函数。观察还强调了这些导电聚合物系统中的无序的作用。
英文摘要：
We study the differences in electrical charge transport dynamics of the conductivity enhancement of poly(3,4-ethylenedioxythiophene) (PEDOT) derivatives under geometrical confinement. The results of polymer blend poly(3,4-ethylene dioxythiophene):poly(styrenesulfonate) and a polymer-monomer blend, poly(3,4- ethylenedioxythiophene):tosylate, highlight the role of dopants and processing conditions of these systems under confinement. The prevailing transport length scales in confined geometry of characteristic dimensions originate from varying disorder in these polymer systems. These observable differences in two different PEDOTs introduced by molecular level reorganization can be utilized to tune conducting polymer systems for efficient electrical and thermoelectric properties. The electrical conductivity σ of the polymer system, which is a function of the electronic structure at molecular level and a connectivity parameter, has been probed in cylindrical-alumina nanoscaffolds of various channel diameters, at different frequencies ω and temperatures T. The observations also emphasize the role of disorder in these conducting polymer systems.
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