A new donor-acceptor type polymeric material from a thiophene derivative and its electrochromic properties

作者：Udum Yasemin Arslan; Yildiz Ersin; Gunbas Gorkem; Toppare Levent^*

来源：Journal of Polymer Science Part A: Polymer Chemistry , 2008, 46(11): 3723-3731.

DOI：10.1002/pola.22713

• conducting polymers
• conjugated polymers
• electrochemical polymerization
• electrochemistry
• electrochromism
• n-doping
• NIR device applications

A new electrochromic polymer, poly(2,3,5,8-tetra(thiophen-2-yl)quinoxaline) (PTTQ), was synthesized electrochemically and its electrochromic properties were investigated. The polymer was characterized by Cyclic Voltammetry, Fourier Transform infrared spectroscopy, LTV-Vis-NIR Spectroscopy, and colorimetry. Spectroelectrochemistry analysis demonstrated that the polymer can undergo both p- and true n-type doping processes. The polymer, (PTTQ), has three accessible color states: an oxidized transmissive, a neutral light bluish-green, and a reduced transmissive light gray. Switching ability of the polymer was evaluated by kinetic studies. The polymer revealed an excellent optical contrast of 98% in the NIR region. Outstanding optical contrast in the NIR region, high stability and fast switching times make this polymer an excellent candidate for NIR device applications.

• 出版日期2008-6-1