Polymer Composite with Three Electrochromic States

Abstract

The electrochromic properties of an electrodeposited polymer composite consisting of poly(3,4ethylenedioxythiophene) (PEDOT) doped with poly(3-methyl-2-{[3-(4-vinyl-benzyl)-3H-benzothiazol-2-ylidene]-hydrazono}-2,3-dihydro-benzothiazole-6-sulfonic) acid (polyABTS) are reported. Films of this polymer composite exhibit three electrochromic states in the visible region upon application of potentials at -800 mV, 0 V, and +800 mV versus Ag/AgCl, confirming that both polymers contribute to electrochromic switching. These films exhibit ultracontrasts between the bleached state at 0 V and the blue state at -800 mV (∆T % ) 33.6% at 615 nm) and the green state at +800 mV (∆T % ) 46.3% at 393 nm). The efficiency of cathodic coloration and bleaching of this material at 615 nm is 322.1 and 396.4 cm 2 C -1 , respectively, whereas the efficiency of anodic coloration and bleaching at 393 nm is 189.9 and 192.4 cm 2 C -1 , respectively. In comparison to previously reported films of polypyrrole (pPy) doped with the ABTS monomer (pPy[ABTS]), thick films of PEDOT[polyABTS] exhibit an increased stability to potential cycling both because PEDOT is more resistant to overoxidation than pPy and because polyABTS is a nonleachable dopant. Reversible redox behavior, anodic and cathodic coloration, fast response times, resistance to overoxidation, ease of fabrication, and low cost make this material competitive for electrochromic applications.

Identification of chemicals resulted in selective glycerol conversion as sustainable fuel on Pd-based anode nanocatalysts

“…To some extent, bimetallic materials have the potential to enhance reaction rate, alter product selectivity, and/or help or prevent catalyst deactivation. [35][36][37][38][39][40][41][42] In this work we show an oxidative transformation of glycerol when the Pd electrode surface is modied by Mn and Fe elements. 8,29,30 It was reported that the high activity and stability of palladium were due to its good poisoning resistance.…”

A new terpyridine tethered polythiophene: Electrosynthesis and characterization

“…INTRODUCTION Conducting polymers (CPs) are nowadays a subject of large interest, constituting innovative elements in a number of technological devices, such as rechargeable batteries, 1 organic light emitting diodes (OLEDs), 2 electrochromic 3,4 and photovoltaic devices (OPVs), 5,6 sensors, 7,8 and biosensors. 9,10 In comparison with chemical polymerization, electropolymerization is an easier and more flexible synthetic approach.…”

Conducting Polymers with Functional Dopants and their Applications in Energy, Environmental Technology, and Nanotechnology

“…The instability of pPy could be improved by using poly (3,4-ethylenedioxythiophene) (PEDOT) conducting polymers. It was reported that PE-DOT doped with polymeric form of ABTS (poly-ABTS) exhibited an increased stability to potential cycling both because PEDOT was more resistant to over-oxidation than pPy and poly-ABTS was a non-leachable dopant [29].…”