Técnicas de caracterização para investigar interações no nível molecular em filmes de Langmuir e Langmuir-Blodgett (LB)
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Data
2005-06-01
Autores
Ferreira, Marystela [UNESP]
Caetano, Wilker [UNESP]
Itri, Rosangela
Tabak, Marcel
Oliveira Jr., Osvaldo N.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Química
Resumo
This paper discusses fundamental concepts for the characterization of Langmuir monolayers and Langmuir-Blodgett (LB) films, with emphasis on investigations of material properties at the molecular level. By way of illustration, results for phospholipid monolayers interacting with the drug dipyridamole are highlighted. These results were obtained with several techniques, including in situ grazing incidence X-ray diffraction, Fourier transform infrared (FTIR) spectroscopy, fluorescence microscopy, in addition to surface pressure and surface potential isotherms. Also mentioned are the difficulties in producing Langmuir and LB films from macromolecules, and how molecular-level interactions in mixed polymer LB films can be exploited in sensors.
Descrição
Palavras-chave
Langmuir and Langmuir-Blodgett (LB) films, characterization, interface
Como citar
Química Nova. Sociedade Brasileira de Química, v. 28, n. 3, p. 502-510, 2005.