Synthesis and characterization of conducting copolymer of Trans‐1‐(4‐methyl‐3′‐thienyl)‐2‐(ferrocenyl)ethene with EDOT

Abstract

Ferrocene-substituted conducting polymer namely poly(trans-1-(4-methyl-3 0 -thienyl)-2-(ferrocenyl)ethene-co-3,4-ethylenedioxythiophene) [P(MTFE-co-EDOT)] was synthesized and its electrochromic properties were studied. Monomer, MTFE, was obtained using 2-(ferrocenyl)ethene and 3-methyl-4-bromothiophene. The structure of monomer was determined via Fourier transform infrared spectroscopy (FTIR), 1 H-NMR, and 13 C-NMR techniques. The copolymer was synthesized using this monomer and EDOT. The resulting copolymer P(MTFE-co-EDOT) was characterized by cyclic voltammetry, FTIR, scanning electron microscopy, atomic force microscopy, and UV-vis spectroscopy. The conductivity measurements of copolymer and PEDOT were accomplished by the four-probe technique. Although poly(trans-1-(4-methyl-3 0 -thienyl)-2-(ferrocenyl)ethene) [P(MTFE)] reveals no electrochromic activity, its copolymer with EDOT has two different colors (violet and gray). Band gap (E g ) and k max of P(MTFE-co-EDOT) were determined. V C 2012 Wiley Periodicals, Inc. J Appl Polym Sci 126: 808-814, 2012

Enzi̇mati̇k Oksi̇dati̇f Poli̇meri̇zasyon İle Orto-Hi̇drazon-Fonksi̇yonlu Oli̇gofenol Sentezi̇

“…Bu yüzden I p (akım yoğunluğu) iletken polimerlerin çoğu için v (tarama hızı) ile orantılıdır [31,32]. Akım duyarlılıkları (I pa ve I pc ), elektroaktif ve elektrot yüzeyine iyi yapışmış polimer filmlerde doğrudan tarama hızı ile orantılıdır [36][37]. …”

Enzymatic oxidative polymerization of para‐imine functionalized phenol catalyzed by horseradish peroxidase

“…The current responses were directly proportional to the scan rate, indicating that the oligomer film was electroactive and well adhered to the electrode. [41][42][43][44] The scan rates for the anodic and cathodic peak currents (I pa and I pc ) show a linear dependence as a function of the scan rate as illustrated in Fig. 6 indicating that the redox process is surface-controlled, and electrochemical process is reversible even at high scan rates.…”

Matched‐dual‐polymer electrochromic lenses, using new cathodically coloring conducting polymers, with exceptional performance and incorporated into automated sunglasses

“…Coloring CPs Our syntheses, as described below, can be taken in the context of and compared with the extensive prior work in the syntheses of monomer precursors and, eventually, CPs, having ethylene dioxythiophene (EDOT) and ProDOT skeletons, [75][76][77][78][79][80][81][82][83][84][85][86][87][88][89][90][91] especially the recent work of Krishnamoorthy et al 75 Since the resulting electrochromic CPs are mostly cathodically coloring, our work may also be taken in the context of early work with cathodically coloring CPs such as poly(isothianaphthene) (PITN). [92][93][94] Typical syntheses are depicted in the schemes in Figures 1-4 below and briefly described stepwise here for each monomer in turn.…”

“…Among cathodically coloring CPs, it has been observed for some time that derivatives of poly(3,4-propylenedioxythiophene) (P(ProDOT)) show improved electrochromic ARTICLE WILEYONLINELIBRARY.COM/APP performance over those of poly(3,4-ethylenedioxythiophene) (PEDOT). [75][76][77][78][79][80][81][82][83][84][85][86][87][88][89][90][91] The latter (PEDOTs) were among the first practical cathodically coloring polymers. 76,77,[84][85][86]91 Welsh et al and Amb et al [78][79][80] were one of the first to demonstrate significant improvement of electrochromic properties upon 2,2 0 di-Me substitution on the propylene moiety of the ProDOT.…”

“…To the best of our knowledge and based on an extensive search of the literature, the electrochromic lenses and sunglasses we report herein represent the best visible‐region electrochromic performance for dual‐polymer CP electrochromic systems to date. They also are, to our knowledge, the first practical implementation in working sunglasses, that is, they represent practical, functional, and applied polymers.…”