Results 251 to 260 of about 60,078 (298)

Perfect Diamagnetism of Polyaniline

The Journal of Physical Chemistry B
Herein, we report the synthesis of Fe-doped polyaniline (D-PANI). The onset of the diamagnetism is observed to be at T < 24 K under a weak external magnetic field. D-PANI was air-stable and showed the Peierls transition, as its resistivity increased rapidly at low temperatures, thus behaving as an electromagnetic insulator.
Hiromasa Goto, Ryo Miyashita
openaire   +2 more sources

The effect of the polyaniline morphology on the performance of polyaniline supercapacitors

Journal of Solid State Electrochemistry, 2005
The polyaniline (PANI) prepared by the pulse galvanostatic method (PGM) or the galvanostatic method on a stainless steel substrate from an aqueous solution of 0.5 mol/l H2SO4 with 0.2 mol/l aniline has been studied as an electroactive material in supercapacitors.
Haihui Zhou, Hong Chen, Shenglian Luo, Gewu Lu, Wanzhi Wei, Yafei Kuang   +5 more
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Electrical properties of polyaniline and substituted polyaniline derivatives

Synthetic Metals, 1989
Abstract Polyaniline and substituted polyaniline derivatives which the ortho position hydrogen is substituted with CH3, OCH3 and Cl are studied. Both protonic acid doping (i.e. the addition of protons to the polymer chain without changing the number of electrons in the chain) and the acceptor doping (i.e., the number of electrons in the polymer chain
Y.W. Park, J.S. Moon, M.K. Bak, J.-I. Jin   +3 more
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Gas sorptions in polyaniline powders and gas permeations in polyaniline films

International Conference on Science and Technology of Synthetic Metals, 1994
Abstract Comparison of gas sorptions by microgravimetry and differential calorimetry on polyaniline (PANi) powders with gas permeation on polyaniline films are described. Polyaniline powders and films were in the following forms: as-synthesized in polyemeraldine base, doped PANi (with 4M HCl), undoped PANi (with 1M ammonia) and redoped PANi (with 10 −
L. Rebattet, M. Escoubes, M. Pinéri, E.M. Geniès   +3 more
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Polyaniline micro- and nanostructure

Advanced Materials for Optics and Electronics, 1999
A hierarchic polyaniline micro- and nanostructure is presented as a result of electron microscope studies. Molecular organisation is also discussed on the basis of experimental data and computer modelling. Copyright © 1999 John Wiley & Sons, Ltd.
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Thin polyaniline and polyaniline/carbon nanocomposite films for gas sensing

Thin Solid Films, 2011
Abstract We have studied the gas sensing properties of five polyaniline-based materials—thick and thin PANI films, nanocomposite PANI/MWNT and PANI/SWNT films, and PANI nanogranules embedded in a polyvinylpyrrolidone matrix. The films (except for the latter) were deposited within the induction period of the polymerization process on gold ...
P. Lobotka, P. Kunzo, E. Kovacova, I. Vavra, Z. Krizanova, V. Smatko, J. Stejskal, E.N. Konyushenko, M. Omastova, Z. Spitalsky, M. Micusik, I. Krupa   +11 more
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Deuteron NMR Study of Polyaniline and Polyaniline/Clay Nanocomposite

Macromolecules, 2003
Different forms of solid polyaniline (Pani) and polyaniline intercalated into montmorillonite clay layers have been characterized by solid-state deuteron quadrupole echo and magic angle spinning NM...
Yanina A. Goddard, Robert L. Vold, Gina L. Hoatson   +2 more
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Catalytic reduction of benzoquinone at polyaniline and polyaniline/enzyme films

Electroanalysis, 1993
AbstractThe enzyme‐mediator‐conducting polymer model provides a convenient charge transporting immobilization matrix for redox enzymes in potential biosensor constructions. This study considers the charge transport mechanism in the benzoquinone (Q)‐polyaniline (Pani) system.
Julia C. Cooper, Elizabeth A. H. Hall
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Femtosecond Exciton Dynamics in Polyaniline and Polyaniline-Polymethyl Mathacrylate

Ultrafast Phenomena, 1994
Polyaniline (PAn) and derivatives have been again the subject of great interest owning to the larger nonlinearity, easy fabrication and its excellent stability under ambient condition in comparison with other families of conducting polymer. Photoinduced absorption and bleaching in PAn have been observed and attributed to the existence of localized ...
W.-Z. Lin, H. Wang, T.-S. Lai, D. Mo, Y.-M. Ou, K.-C. Gong   +5 more
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Thermal behavior of polyaniline films and polyaniline–polystyrene blends

Journal of Applied Polymer Science, 2002
AbstractIn this article, a study of the thermal behavior of polyaniline films and polyaniline–polystyrene blends is presented. Transport measurements (electrical conductivity and thermoelectric power) at high temperature and thermogravimetric analysis show that an irreversible degradation is observed near 450 K for films doped with DiOHP and near 500 K
V. Jousseaume, M. Morsli, A. Bonnet
openaire   +1 more source