Specroelectrochemical, switching kinetics, and chronoamperometric studies of dibenzyl derivative of poly(3,4‐propylenedioxythiophene) thin‐film‐based electrochromic device

Abstract

The dibenzyl derivative of poly(3,4-propylenedioxythiophene) (PProDOT-Bz 2 ) thin film is deposited onto ITO-coated glass substrate by electropolymerization technique. The electropolymerization of ProDOT-Bz 2 is carried out by a three-electrode electrochemical cell. The cyclic voltammogram shows the redox properties of electrochemically prepared films deposited at different scan rates. The thin films prepared were characterized for its morphological properties to study the homogeniety. Classic six-layer structure of PProDOT-Bz 2 electrochromic device using this material was fabricated and reported for the first and its characterizations such as spectroelectrochemical, switching kinetics, and chronoamperometric studies are performed. The color contrast of the thin film and the device achieved are 64 and 40%, respectively, at k max (628 nm). The switching time is recorded and the observed values are 5 s from the coloring state to the bleaching state and vice versa. The chronoamperometry shows that the device performed up to 400 cycles, and it is capable of working up to 35 cycles without any degradation.

Fabricating polypyrrole/tungsten oxide hybrid based electrochromic devices using different ionic liquids

“…Linear relationships between anodic peak current and scan rate reflect that the oxidation/reduction process of PPy/WO 3 is controlled by the ion diffusion from the electrolyte to the electrode surface . The linear relationships also demonstrated that the electrochemical processes were reversible in nature even at high scan rates …”

“…[31] The linear relationships also demonstrated that the electrochemical processes were reversible in nature even at high scan rates. [32] The structural analysis of pure WO 3 and PPy/WO 3 hybrid nanocomposites was carried out by XRD, and the diffraction patterns Figure 2. (a) Cyclic voltammetries (CVs) of polypyrrole (PPy)/WO 3 film in monomer-free BMIMBF 4 at different scan rates.…”

Multichromic polymers based on pyrene clicked thienylpyrrole

“…Due to the existence of competent technological applications such as sensors, light emitting diodes, photovoltaic cells, transistors, electrochromic devices and optical displays conducting polymers have become the center of attention within the last two decades. Among many polymers, poly(2,5‐dithienylpyrrole) (PSNS) derivatives have been shown to be one of the most useful and are readily synthesized through both chemical and electrochemical paths, having low oxidation potential and satisfactory electrochromic properties .…”