Synthesis and thermopower of poly(3-methoxythiophene-2,5-diyl-co-3,4-ethylenedioxythiophene-2,5-diyl)/tosylate
作者:Qingshuo Wei、Yoshinori Sugihara、Taro Tanabe、Masakazu Mukaida、Kazuhiro Kirihara、Yasuhisa Naitoh、Takao Ishida
DOI:10.1016/j.polymer.2015.04.001
日期:2015.6
A novel conducting polymer, Poly(3-methoxythiophene-2,5-diyl-co-3,4-ethylenedioxythiophene-2,5-diyl]/tosylate (P1/tos), was synthesized by oxidative in situ polymerization using Fe(tos)(3) as an oxidant. Compared with poly(3,4-ethylenedioxythiophene) (PEDOT), P1 has a deeper HOMO level and a wider energy gap as observed by ultraviolet-visible spectroscopy and photoelectron yield spectroscopy. P1/tos showed electrical conductivity of 10 S/cm and a carrier mobility of about 0.6 cm(2)/(V s), which was extracted by using ion-gel thin film transistors. The calculated carrier concentration was on the order of 10(20) cm(-3), which is lower than that of PEDOT/tos. The Seebeck coefficient of P1/tos was higher than that of PEDOT/tos. (C) 2015 Elsevier Ltd. All rights reserved.