Premium
Electroactive Polymer with Oligoanilines in the Main Chain: Synthesis, Characterization and Dielectric Properties
Author(s) -
Zhang Junfeng,
Chao Danming,
Cui Lili,
Liu Xincai,
Zhang Wanjin
Publication year - 2009
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200900235
Subject(s) - delocalized electron , cyclic voltammetry , polymer , dielectric , polymer chemistry , polymerization , materials science , conjugated system , conductive polymer , electrical resistivity and conductivity , conductivity , electrochemistry , chemical engineering , chemistry , electrode , organic chemistry , composite material , optoelectronics , electrical engineering , engineering
An electroactive polymer with well‐defined oligoanilines in the main chain has been prepared by oxidative coupling polymerization. The detailed characteristics of the polymer were systematically studied by FT‐IR, 1 H NMR, GPC and XRD. Its electrochemical behavior was explored with UV‐Vis spectra and cyclic voltammetry showing that its intrinsic electroactivity was maintained and exhibited three distinct reversible oxidative states. Its electrical conductivity is about 3.91 × 10 −4 S · cm −1 in HCl‐doped form at room temperature. Furthermore, the polymer displays a dielectric constant of 48.4 and 13.6 at 10 and 1 MHz, respectively, mainly attributed to the improvement in delocalized charge density and electrical conductivity of the polymer by introduction of the conjugated oligoaniline segments.