Asymmetric Star-Shaped Functionalized Triazine Architecture and Its Electrochromic Device Application

Abstract

A new asymmetric functionalized star shaped triazine derivative, namely 2,2'-((6-(quinolin-8-yloxy)-1,3,5-triazine-2,4diyl)bis(oxy))bis(9H carbazole) (TQC) was synthesized from 2-hydroxy carbazole and 8-hydroxyquinoline. The electrically conductive PTQC film was synthesized via electropolymerization on ITO in a 0.1 M lithium perchlorate/acetonitrile (LiClO 4 /ACN) electrolyte-solvent couple. 1 H-NMR, FTIR and elemental analysis were used to analyze the structure of the TQC. Both electrochemical and spectroelectrochemical studies of the polymer were examined. PTQC revealed color changes between transparent and dark green in the reduced and oxidized states, respectively. Dual type polymer electrochromic devices (ECDs) based on PTQC and poly(3,4-ethylenedioxythiophene) (PEDOT) have been constructed. A potential range of 0 to 2.5 V was found to be proper for working the PTQC/PEDOT device between transparent and blue colors. The spectroelectrochemistry, electrochromic switching, open circuit memory and stability of the device were studied. The properties of the electrochromic device have been investigated such as spectroelectrochemistry, electrochromic switching, stability and open circuit memory.

Donor-Acceptor Type Super-Structural Triazine Cored Conducting Polymer Containing Carbazole and Quinoline for High-Contrast Electrochromic Device

“…Similar surface morphologies were observed when triazine-based polycarbazole derivatives in the literature were examined. 1,12 Stability.-To explore the stability, the polymer film was swept continuously in the redox state using cyclic voltammetry in 0.1 M LiClO 4 /ACN at a scan rate of 250 mV s −1 (Figure 6). After continuous 300 cycles, PTQEC film retained 91.75% electrochemical activity.…”

“…Star-shaped polymer derivatives formed by this core structure have given some special advantage to the polymer structure. These materials are used in wide range of technological areas including sensors 5,6 light emitting diodes (LEDs) 7,8 and electrochromic device (ECDs) 9,10 Compared with linear polymers, star shaped polymers 11,12 have superior properties. These properties are good electrochromic reversibility and excellent stability.…”

Comparative Investigation of Peripheral and Nonperipheral Zinc Phthalocyanine-Based Polycarbazoles in Terms of Optical, Electrical, and Sensing Properties

“…For this purpose, researchers are intensively researching the synthesis of highly cross-linked polycarbazole derivatives formed from superstructured monomers to further improve their optical and electrical properties as well as other physicochemical properties. These superstructural polycarbazole derivatives that obtained electropolymerization of two or more carbazole-derivative-containing electroactive monomers have been found to be superior in optical and mechanical properties. − …”

Optical and Electrical Properties of Monolacunary Keggin-Type Polyoxometalate/Star-Shaped Polycarbazole Nanocomposite Film

“…Conducting polymers have important uses in areas such as supercapacitors, 8 light emitting diodes (LEDs), 9 solar cells, 10 field effect transistor (FET), 11 sensor technology, [12][13][14] and electrochromic devices. [15][16][17][18][19] Up to now, polypyrrole (PPy), polyaniline (PANI), and poly(4-vinylpyridine) (P4VP) modified electrodes have been used for electrocatalytic reduction of POMs containing anionic metal oxides of V, Mo, W, etc. Owing to their high stability in oxidation and reduction and their ability to participate in fast reversible electron transfer reactions, POMs can be used as an electron transfer mediator for an electrocatalytic application.…”