Data/hora: 05/06/2024 01:27:42

Biblioteca(s): | Embrapa Instrumentação.
Data corrente: | 01/03/2005
Data da última atualização: | 25/04/2008
Autoria: | MATTOSO, L. H. C.; ZUCOLOTTO, V.; PATERNO, L. G.; VAN GRIETHUIJSEN, R.; FERREIRA, M.; CAMPANA, S. P.; OLIVEIRA JÚNIOR, O. N.
Título: | Self-assembly films of polyacids and doped poly(o-alkoxyanilines).
Ano de publicação: | 1995
Fonte/Imprenta: | Synthetic Metals, Lausanne, v. 71, p. 2037-2038, 1995.
Idioma: | Inglês
Conteúdo: | The self-assembly (SA) technique has been employed to fabricate ultra-thin fIlms of poly(o-alkoxyanilines) (POAAs) alternated with polyacids. Films were produced from alternated layers of doped poly(o-methoxyaniline) (POMA) and poly(styrene sulfonic acid) (PSS), doped POMA and poly(vinyl sulfonic acid) (PVS), and doped poly(o-ethoxyaniline) (POEA) and carboxymethylcellulose (CMC). The build-up of the multilayer structure was monitored by UV-Vis spectroscopy which showed that the absorbance increases linearly with the number of deposited bi-layers for the three systems. In these SA fllms the polyacid may act as a dopant for the POAA promoting Donnan phenomenon effects. The fllms could be doped and dedoped in a reversible fashion by being immersed fito solutions of different pHs.
Palavras-Chave: | Filme ultra-fino; SA; Técnica de Auto-montagem.
Categoria do assunto: | --
Registro original: | Embrapa Instrumentação (CNPDIA)
Exemplares: | CNPDIA - (8690-1) - UPC - SP - -- - PROCI-95.00076 -  - 1995.00076 - DIS