Journal ArticleDOI
Electrochemical synthesis and characterization of thiophene conducting polymer in aqueous micellar medium
TLDR
In this paper, the optimization of the polymerization conditions as well as the characterization of the electrochemical, spectral and mass exchange behavior of polybithiophene composite films is summarized.Abstract:
In opposite with the usually applied synthesis in organic media, the polymerization of bithiophene in aqueous media has been studied. The use of a non-ionic surfactant (polyoxyethylene octyl phenyl ether (Triton X-100)) is useful not only to solubilize the hydrophobic monomer but it is also important to incorporate various—biologically and catalytically active—additives. In this paper, the optimization of the polymerization conditions as well as the characterization of the electrochemical, spectral and mass exchange behavior of these composite films is summarized. The layers have shown imperceptible electroactivity in monomer-free aqueous LiClO4 solutions, and electrochemical quartz crystal microbalance (EQCM) studies exhibited scarce ion movements, caused assumingly by the fact that the dopant species—moving together with their hydrate shell in the aqueous media—could not penetrate into the hydrophobic film. In contrast, nice reversible redox transformation could be obtained in organic medium such as acetonitrile, where—according to the EQCM results—the charge carrier formation/depletion is accompanied by the incorporation/removal of ClO4− anions. In this solution, the spectral changes have proved the transformation into the conducting state, connected to both mono- and di-cation forms. The incorporation of the surfactant has been demonstrated by the extraordinary surface morphology of the polybithiophene (pBT) films, characterized by scanning electron microscopy. The elementary composition of the curious shell-shaped objects, monitored by energy dispersive X-ray spectroscopy (EDX), evidenced the presence of Triton X-100 by the increased C/S ratio compared to neat polybithiophene, while the Cl/S data reflected the changes connected to the doping level as a consequence of ClO4− anion movements. Moreover, ex situ attenuated total reflectance (ATR) FT–IR measurements clearly showed the existence of C―O bonds, also proving the successful functionalization by the surfactant, built permanently into the redox active films.read more
Citations
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Journal ArticleDOI
Synthesis of highly branched conducting polymer architecture for electrochromic applications
TL;DR: In this paper, a star shape dithienylpyrrole derivative, namely N1,N3,N5-tris(2,5-di(thiophen-2-yl)-1H-pyrrol-1-yl)benzene-1,3,5tricarboxamide (TCA), was designed and synthesized to obtain high optical and electrical performance as functional electrochromic material.
Journal ArticleDOI
Optoelectrochromic characterization and smart windows application of bi-functional amid substituted thienyl pyrrole derivative
TL;DR: In this paper, terephthalamide was used to synthesize double-sided, symmetric amide substituted thienyl pyrrole derivatives, which provided three dimensional electrical conductivity and much better optical, electrical properties and stability.
Journal ArticleDOI
The electrochemical copolymerization of pyrrole and bithiophene on stainless steel in the presence of SDS in aqueous medium and its anticorrosive performance
TL;DR: In this paper, the electrosynthesis of poly(pyrrole-co-bithiophene) copolymers was carried out using the potentiostatic technique on stainless steel (SS) electrode from aqueous oxalic acid solutions containing fixed concentration of BT and different concentrations of pyrrole (Py) in the presence of sodium dodecylsulfate (SDS).
Journal ArticleDOI
Conducting Redox Polymer Based Anode Materials for High Power Electrical Energy Storage
TL;DR: In this article, two conducting redox polymers (CRPs) with polythiophene backbone and diethyl terephthalate pendant groups for the use as ano...
Journal ArticleDOI
Electrochemical reduction and quantification of menadione in sodium dodecyl sulfate micellar media
TL;DR: Menadione cyclic voltammograms show a pair of redox steps on glassy carbon electrode in 01-M H3PO4 with potential separation of 343mV Cationic, nonionic, and anionic surfactants micellar media significantly decrease the menadione peak potential separation.
References
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Book
Infrared and Raman spectra of inorganic and coordination compounds
TL;DR: In this article, the normal modes of vibration are illustrated and corresponding vibrational frequencies are listed for each type, including diatomic, triatomic, fouratomic, five-atomic, six-atomic and seven-atomic types.
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Enhanced electrical conductivity in regioselectively synthesized poly(3-alkylthiophenes)
TL;DR: In this article, a regioselective synthetic method to poly(3-alkylthiophenes) provides structurally homogeneous poly( 3-dodecyl-thiophene), which upon oxidation with I2 leads to polymers with average conductivities of 600 cm-1 and maximum conductivities 1000 S cm−1.
Journal ArticleDOI
Effects of surfactant treatment on mechanical and electrical properties of CNT/epoxy nanocomposites
TL;DR: In this paper, a nonionic surfactant Triton X-100 was applied to enhance the dispersion of carbon nanotubes (CNTs) in polymer and the properties of nanocomposite.
Journal ArticleDOI
Gas sensing properties of SnO2 hollow spheres/polythiophene inorganic–organic hybrids
Mijuan Xu,Jun Zhang,Shurong Wang,Xianzhi Guo,Huijuan Xia,Yan Wang,Shoumin Zhang,Weiping Huang,Shihua Wu +8 more
TL;DR: In this article, the authors showed that there is a strong synergetic interaction between the SnO 2 hollow spheres and polythiophene, and the hybrid materials had higher thermal stability than pure polythophene, which is beneficial for potential application as chemical sensors.