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: |
MELLO, S. V.; MATTOSO, L. H. C.; OLIVEIRA JUNIOR, O. N.; FARIA, R. M. |
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Afiliação: |
USP-IQSC; EMBRAPA-CNPDIA; USP-IFSC. |
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Título: |
Processibility of poly(o-ethoxyaniline) via the Langmuir-Blodgett technique. |
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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.33. |
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Idioma: |
Inglês |
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Notas: |
Ref.P-1.97. |
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Conteúdo: |
Poly(o-ethoxyaniline) (POEA), a polyaniline derivative, has been chemically synthesized for the fabrication of Langmuir and Langmuir-Blodgett (LB) films. Good quality films were only obtained when acidic subphases were employed, owing to the doping process the polymer molecules suffer. Monolayers spread on aqueous solutions containing different concentrations of e.g. trifluoroacetic (TFA) and hydrochloric acid possess high collapse pressures and excellent stability. Different types (Y or Z) of LB films were produced depending on the conditions of film preparation and on the type of substrate. The highest quality films are Z-type LB films deposited on BK7 glass, especially if the polymer is pre-doped in TFA. The as-deposited LB films are already in the doped state, as confirmed by UV-visible absorption measurements. |
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Palavras-Chave: |
Films; Langmuir-Blodgett technique; Polyaniline. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01506naa a2200217 a 4500
001 1026941
005 1999-12-22
008 1995 bl uuuu u00u1 u #d
100 1 $aMELLO, S. V.
245 $aProcessibility of poly(o-ethoxyaniline) via the Langmuir-Blodgett technique.
260 $c1995
300 $ap.33.
500 $aRef.P-1.97.
520 $aPoly(o-ethoxyaniline) (POEA), a polyaniline derivative, has been chemically synthesized for the fabrication of Langmuir and Langmuir-Blodgett (LB) films. Good quality films were only obtained when acidic subphases were employed, owing to the doping process the polymer molecules suffer. Monolayers spread on aqueous solutions containing different concentrations of e.g. trifluoroacetic (TFA) and hydrochloric acid possess high collapse pressures and excellent stability. Different types (Y or Z) of LB films were produced depending on the conditions of film preparation and on the type of substrate. The highest quality films are Z-type LB films deposited on BK7 glass, especially if the polymer is pre-doped in TFA. The as-deposited LB films are already in the doped state, as confirmed by UV-visible absorption measurements.
653 $aFilms
653 $aLangmuir-Blodgett technique
653 $aPolyaniline
700 1 $aMATTOSO, L. H. C.
700 1 $aOLIVEIRA JUNIOR, O. N.
700 1 $aFARIA, R. M.
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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