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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
22/12/1999 |
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Data da última atualização: |
22/12/1999 |
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Autoria: |
NOGUEIRA, J. S.; MATTOSO, L. H. C.; FARIA, R. M. |
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Afiliação: |
UFMT-Depto. de Fisica; EMBRAPA-CNPDIA; USP-IFSC. |
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Título: |
Nomadic polarization in doped poly(o-methoxyaniline) films. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON SCIENCE AND TECHNOLOGY OF SYNTHETIC METALS, July-Aug. 1996, Snowbird, UT, Estados Unidos. Abstracts... Snowbird: Utah University, 1996. |
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Páginas: |
p.380. |
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Idioma: |
Inglês |
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Notas: |
Ref.P3.173. |
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Conteúdo: |
The AC conductivity of poly(o-methoxyaniline)-POMA films with various doping levels were studied in the temperature range of 4.2 to 298K. In the low frequency regime the conductivity is frequency-independent, but above a critical angular frequency it obeys an equation of the formAC conductivity approximately frequency exponential factor s. Both the DC conductivity and the critical frequency increases with temperature, whereas the exponential factor s is temperature-independent. Since the conduction of doped POMA is strongly dependent on the electronic mobility along the molecule backbone, a nomadic polarization model of quasi-one-dimensional solids was used to fit the experimental results. Values for the bulk mobility, the carrier density and the transition rate of the intermolecular charge transfer were estimated. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01392naa a2200169 a 4500
001 1027117
005 1999-12-22
008 1996 bl uuuu u00u1 u #d
100 1 $aNOGUEIRA, J. S.
245 $aNomadic polarization in doped poly(o-methoxyaniline) films.
260 $c1996
300 $ap.380.
500 $aRef.P3.173.
520 $aThe AC conductivity of poly(o-methoxyaniline)-POMA films with various doping levels were studied in the temperature range of 4.2 to 298K. In the low frequency regime the conductivity is frequency-independent, but above a critical angular frequency it obeys an equation of the formAC conductivity approximately frequency exponential factor s. Both the DC conductivity and the critical frequency increases with temperature, whereas the exponential factor s is temperature-independent. Since the conduction of doped POMA is strongly dependent on the electronic mobility along the molecule backbone, a nomadic polarization model of quasi-one-dimensional solids was used to fit the experimental results. Values for the bulk mobility, the carrier density and the transition rate of the intermolecular charge transfer were estimated.
700 1 $aMATTOSO, L. H. C.
700 1 $aFARIA, R. M.
773 $tIn: INTERNATIONAL CONFERENCE ON SCIENCE AND TECHNOLOGY OF SYNTHETIC METALS, July-Aug. 1996, Snowbird, UT, Estados Unidos. Abstracts... Snowbird: Utah University, 1996.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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