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Structural analysis and dielectric relaxation mechanism of conducting polymer/volcanic basalt rock composites

Abstract

In this work, polypyrrole and polythiophene conducting polymers (CPs) have been synthesized and doped with volcanic basalt rock (VBR) in order to improve their dielectric properties for technological applications. The structure and morphology of the composites with different VBR doping concentrations were characterized by FT-IR and SEM analyses. The best charge storage ability was achieved for maximum VBR doping concentration (50.0 wt.%) for both CPs. Dielectric relaxation types of the composites were determined as non-Debye type due to non-zero absorption coefficient and observation of semicircles whose centers were below Z′ axis at the Nyquist plots. It was also ascertained that VBR doping makes the molecular orientation easier than for non-doped samples and reduced energy requirement of molecular orientation. In addition, AC conductivity was totally masked by DC conductivity for all samples at low frequency.

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Electrochemical behavior and conductivity measurements of electropolymerized selenophene-based copolymers

), 190. [38] YOSHINO K., KOHNO Y., SHIRAISHI T., KANETO K., INOUE S., TSUKAGOSHI K., Synthetic Met., 10 (1985), 319. [39] HUANG W.S., PARK J.M., Chem. Commun., (1987), 856. [40] ZOTTI G., GUMBS R., Polythiophene and Polypyrrole Copolymers, in NALWA H.S. (Ed), Handbook of Organic Conductive Molecules and Polymers, Wiley, Chichester, 1997. [41] ALAKHRAS F., HOLZE R., J. Appl. Polym. Sci., 107 (2008), 1133. [42] ALAKHRAS F., HOLZE R., Electrochim. Acta, 52 (2007), 5896. [43

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Semiconducting Organic Molecular Materials

References TSUMURA, A.—KOEZUKA, H.—AMDO, T.: Macromolecular Electronic Device — Field-Effect Transistor with a Polythiophene Thin-Film, Appl. Phys. Lett. 49 (1986), 1210-1212. BRUSSO, J. L.—HIRST, O. D.—DADVAND, A.—GANESAN, S.—CICOIRA, F.—ROBERTSON, C. M.—OAKLEY, R. T.—ROSEI, F.—PEREPICHKA, D. F.: Two-Dimensional Structural Motif in Thienoacene Semiconductors: Synthesis, Structure, and Properties of Tetrathienoanthracene Isomers, Chem. Mater. 20 (2008), 2484-2494 and citations reported therein

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Preparation of Ag nanoparticles-reinforced polyamide 6 nanocomposites by in situ polymerization and investigation of its properties

. & Maruthamuthu, S., et al. (2012). One pot synthesis of polypyrrole silver nanocomposite on cotton fabrics for multifunctional property. Carbohydr. Polym. 90(4), 1557–1563. DOI: 10.1016/j.carbpol.2012.07.030. 4. Bagheri, H., Banihashemi, S. & Jelvani, S. (2016). A polythiophene–silver nanocomposite for headspace needle trap extraction. J. Chromatogr. A 1460, 1–8. DOI: 10.1016/j.chroma.2016.06.078. 5. Regiel, A., Irusta, S. & Kyzioł, A., et al. (2012). Preparation and characterization of chitosan–silver nanocomposite films and their antibacterial activity against

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Polycarbonate/Polypropylene-Graft-Maleic Anhydride and Nano-Zeolite-Based Nanocomposite Membrane: Mechanical and Gas Separation Performance

of advanced composite membranes, J. Mater. Chem. A. 1 (2013) 10058-10077. 15. Kim S., Lee Y.M.: Rigid and microporous polymers for gas separation membranes, Prog. Polym. Sci. 43 (2015) 1-32. 16. Sanders D.F., Smith Z.P., Guo R., Robeson L.M., McGrath J.E., Paul D.R., Freeman B.D.: Energy-efficient polymeric gas separation membranes for a sustainable future: a review, Polymer. 54 (2013) 4729-4761. 17. Ali W., Kausar A., Iqbal T.: Reinforcement of high performance polystyrene/polyamide/polythiophene with multi-walled carbon nanotube obtained through

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Graphene as a Material for Solar Cells Applications

A., Improvement of graphene-Si solar cells by embroidering grapheme with a carbon nanotube spider-web; Nano Energy 2015 - article in press. 31. Chandramika Bora, Chandrama Sarkar, Kiron J. Mohan, Swapan Dolui; Polythiophene /graphene composite as a highly efficient platinum-free counter electrode in dye-sensitized solar cells , Electrochimica Acta 03/2015; 157. 32. Yan H., Wang J., Feng B, Duan K, Weng J., Graphene and Ag nanowires co-modified photoanodes for high-efficiency dye-sensitized solar cells, Solar Energy 122 (2015), 966

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Determination of ascorbic acid using differential pulse voltammetry method on aniline-co-para–aminophenol modified electrode

, S. (2006). A new method for characterizing the growth and properties of polyaniline and poly(aniline-co-o-aminophenol) films with the combination of EQCM and in situ FTIR spectroelectrochemisty. Electrochim. Acta 52(1), 342–352. DOI: 10.1016/j.electacta.2006.05.013. 34. Brédas, J.L., Street, G.B., Thémans, B. & André, J.M. (1985). Organic polymers based on aromatic rings (polyparaphenylene, polypyrrole, polythiophene): Evolution of the electronic properties as a function of the torsion angle between adjacent rings. J. Chem. Phys. 83(3), 1323–1329. DOI: 10

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Synthesis and characterization of Ag@polycarbazole nanoparticles using different oxidants and their dispersion behavior

degree of interaction with different solvents, and therefore can make dispersion, suspension or true solution. The interaction of PCz with common organic solvents such as methanol, ethanol, acetone and halogenated solvents is considerably greater as compared to many other polymers, like polypyrrole, polyannilin, polythiophene [16] . Therefore, the utilization of PCz as a surfactant is expected to considerably enhance the dispersion of metal nanostructures and delimit the possibilities of coalescence that is a major drawback of metal nanostructures, by which they can

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