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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: |
MATTOSO, L. H. C.; ZUCOLOTTO, V.; RAPOSO, M.; PONTES, R. S.; OLIVEIRA JUNIOR, O. N. |
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Afiliação: |
EMBRAPA-CNPDIA; USP-IFSC; Uiversidade Nova de Lisboa-Faculdade de Ciencias e Tecnologia. |
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Título: |
Adsorption process of self-assembled films of doped poly(o-methoxyaniline). |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON ORGANIZED MOLECULAR FILMS, 7., Sept. 1995, Numana, Ancona, Italia. Abstract book... [S.l.: s.n.], 1995. |
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Páginas: |
p.57. |
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Idioma: |
Inglês |
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Notas: |
Ref.P-2.65. |
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Conteúdo: |
An investigate is made of the fabrication process of self-assembled (SA) films of doped poly(o-methoxyaniline) alternated with polyacids. The buildup of bilayers is monitored by UV-vis spectroscopy and the absorbance is seen to increase linearly with the number of deposited layers. The kinetics of adsorption of each layer was also investigated. For the POMA layer a very short time period (3-5 min) suffices for complete adsorption to occur. Because adsorption is basically due to electrostatic interactions, we have probed the effects from applying electric fields on conducting glass and using charged Teflon substrates. In the latter case, successful SA film formation occurs. When electric fields are applied, however, the amount of doped POMA adsorbed increases but undesirable side effects appear such as the dedoping of the polymer which may hamper the buildup of multilayers. |
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Palavras-Chave: |
Auto-montagem; filmes; Polianilina; Polyaniline; Self-assembled films. |
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Thesagro: |
Absorção. |
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Thesaurus Nal: |
adsorption. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01699naa a2200277 a 4500
001 1026938
005 1999-12-22
008 1995 bl uuuu u00u1 u #d
100 1 $aMATTOSO, L. H. C.
245 $aAdsorption process of self-assembled films of doped poly(o-methoxyaniline).
260 $c1995
300 $ap.57.
500 $aRef.P-2.65.
520 $aAn investigate is made of the fabrication process of self-assembled (SA) films of doped poly(o-methoxyaniline) alternated with polyacids. The buildup of bilayers is monitored by UV-vis spectroscopy and the absorbance is seen to increase linearly with the number of deposited layers. The kinetics of adsorption of each layer was also investigated. For the POMA layer a very short time period (3-5 min) suffices for complete adsorption to occur. Because adsorption is basically due to electrostatic interactions, we have probed the effects from applying electric fields on conducting glass and using charged Teflon substrates. In the latter case, successful SA film formation occurs. When electric fields are applied, however, the amount of doped POMA adsorbed increases but undesirable side effects appear such as the dedoping of the polymer which may hamper the buildup of multilayers.
650 $aadsorption
650 $aAbsorção
653 $aAuto-montagem
653 $afilmes
653 $aPolianilina
653 $aPolyaniline
653 $aSelf-assembled films
700 1 $aZUCOLOTTO, V.
700 1 $aRAPOSO, M.
700 1 $aPONTES, R. S.
700 1 $aOLIVEIRA JUNIOR, O. N.
773 $tIn: INTERNATIONAL CONFERENCE ON ORGANIZED MOLECULAR FILMS, 7., Sept. 1995, Numana, Ancona, Italia. Abstract book... [S.l.: s.n.], 1995.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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