Journal ArticleDOI
Dielectric constant and ac conductivity in polyaniline derivatives
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TLDR
In this article, the authors report results on ac conductivity and dielectric constant measurements at 10 kHz on polyaniline derivatives having alkyl ring-substituents.About:
This article is published in Solid State Communications.The article was published on 1996-03-01. It has received 30 citations till now. The article focuses on the topics: Polyaniline & Dielectric.read more
Citations
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Chemical sensors for portable, handheld field instruments
TL;DR: A review of three commonly used classes of chemical sensor technologies as applicable to implementation in portable, handheld field instruments is presented in this article, where the authors evaluate three of the major classes of compact chemical sensors for portable applications: (solid-state) chemiresistors, (solidstate) CHEMFETs, and (optical) surface plasmon resonance sensors (SPR).
Journal ArticleDOI
Dielectric behavior of polyaniline synthesized by different techniques
TL;DR: In this article, the effect of different techniques on the electric properties (dielectric constant, dielectric losses, and complex electric modulus) of the corresponding emeraldine base has been studied.
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TSDC spectroscopy of relaxational and interfacial phenomena.
Vladimir M. Gun’ko,Vladimir I. Zarko,E.V. Goncharuk,L.S. Andriyko,Vladimir V. Turov,Y.M. Nychiporuk,Roman Leboda,Jadwiga Skubiszewska-Zięba,A.L. Gabchak,V.D. Osovskii,Yu.G. Ptushinskii,G.R. Yurchenko,O.A. Mishchuk,P.P. Gorbik,Polycarpos Pissis,Jonathan P. Blitz +15 more
TL;DR: Comparison of the data of TSDC and dielectric relaxation spectroscopy (DRS), differential scanning calorimetry (DSC), 1H NMR spectroscopic with layer-by-layer freezing-out of bulk and interfacial water, adsorption/desorption of nitrogen, water and dissolved organics demonstrates high sensitivity and information content of the TSDC technique, allowing a deeper understanding of interfacial phenomena.
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Synthesis, characterization and low frequency AC conduction of polyaniline/niobium pentoxide composites
Y.T. Ravikiran,M.T. Lagare,M. Sairam,N. N. Mallikarjuna,Bojja Sreedhar,Sanjeev K. Manohar,Alan G. MacDiarmid,Tejraj M. Aminabhavi +7 more
TL;DR: In this article, a new type of conducting polyaniline-niobium pentoxide (PANI/Nb2O5) nanocomposites have been synthesized by in situ deposition technique by placing fine grade powder of Nb 2O5 during in situ polymerization of aniline.
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Polaron Delocalization in Ladder Macromolecular Systems
TL;DR: It is shown that palladium-catalyzed amination can assemble triarylamine ladder materials with extended structures and the electrochemistry of the ladder systems consists of a multiwave voltammogram with a relatively low first oxidation potential.
References
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Journal ArticleDOI
‘Polyaniline’: Protonic acid doping of the emeraldine form to the metallic regime
J. C. Chiang,Alan G. MacDiarmid +1 more
TL;DR: The emeraldine base form of polyaniline, which consists of equal numbers of reduced and oxidized repeat units, is doped to the metallic conducting regime by aqueous 1 M HCl as mentioned in this paper.
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Transport and EPR studies of polyaniline: A quasi-one-dimensional conductor with three-dimensional "metallic" states.
TL;DR: This issue is investigated by studying a model polymer, the HCl-doped emeraldine salt from of oriented polyaniline (PAN-ES), through the temperature dependence of the dc conductivity, thermoelectric power, complex microwave dielectric constant, EPR, and electric-field dependence of conductivity.
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ac conductivity of emeraldine polymer
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Microwave transport in the emeraldine form of polyaniline.
TL;DR: In this paper, the conductivity and dielectric constant of the emeraldine polymer were studied at a frequency of 6.5 × 6.9 Hz as a function of temperature T and protonation levels spanning from insulating emeraldines base [${\ensuremath{\sigma}}_{\mathrm{dc}}$(295 K)] to conducting emeraldiners.
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Electron localization and charge transport in poly(o-toluidine): A model polyaniline derivative.
TL;DR: In this paper, the electron localization is increased with increasing one dimensionality of a quasi-one-dimensional disordered system (quasi-1D-DS), which is tested by studying electron localization in the methyl ring-substituted derivative of polyaniline (PAN), poly(o-toluidine) (POT).
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ac conductivity of emeraldine polymer
‘Polyaniline’: Protonic acid doping of the emeraldine form to the metallic regime
J. C. Chiang,Alan G. MacDiarmid +1 more