Preparation and Electrochromic Properties of Polythiophene Derivatives

Abstract

Polythiophene derivatives, poly(2,2′:5′,2″:5″,2″′:5″′,2″″-quinquethiophene) (P5T), poly (2,3,4,5-tetrathiopenyl-thiophene) (PX5T) and poly(1,3,5-tristhienyl-benzene) (P3TB), were prepared via the electropolymerization. The electrochromic properties of polythiophene derivative films were investigated. The results showed that P5T, PX5T and P3TB films exhibited reversible, clear colour change in liquid electrolyte on electrochemical doping and dedoping. Moreover, solid state electrochromic device, indium tin oxide (ITO)/polythiophene derivative films/conducting gel /ITO, were fabricated with polythiophene derivative films as the active electrochromic layer. The color change of polythiophene derivative films based on gel electrolyte on electrochemical doping and dedoping were similar with the color change based on liquid electrolyte.

Water‐dispersible polyaniline‐carbon nanotubes composites with interface covalent bond and their enhanced electrochemical and electrochromic properties

“…After half a century development, electrochromic materials have been used in different fields such as rear-view mirror for motor vehicle, smart sunglasses, thermal control for satellites, smart windows, electronic displays, and fabric. [2][3][4][5][6][7] Although a lot number of materials possess electrochromic features, such as tungsten trioxide (WO 3 ), [8] titanium dioxide (TiO 2 ), [9] prussian blue (PB), [10] polythiophene, [11] and polyaniline (PANI), [12] etc., only those with favorable electrochromic performances are potentially useful in commercial applications. Conductive polymers are a very popular class of electrochromic materials because of due to their superior coloration efficiency, high chemical stability, low cost, ease of synthesis, and flexibility.…”

Incorporação de nanopartículas metálicas a polímeros conjugados: preparação, caracterização e utilização na fabricação de filmes nanoestruturados

“…Os polímeros conjugados e seus derivados (95)(96)(97)(98)(99)(100)(101)(102)(103)(104)(105) são materiais orgânicos que apresentam grande interesse no estudo de suas propriedades crômicas, com ênfase nos politiofenos (96,(99)(100)(101)(104)(105)(106)(107)(108) , que apresentam esse efeito mais pronunciado, possibilitando a sua aplicação em sensores óticos. (111)(112)(113)(114)(115)(116)(117) .…”