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Vibrational spectroscopy for probing molecular-level interactions in organic films mimicking biointerfaces.
Volpati, Diogo; Aoki, Pedro H B; Alessio, Priscila; Pavinatto, Felippe J; Miranda, Paulo B; Constantino, Carlos J L; Oliveira, Osvaldo N.
Afiliação
  • Volpati D; São Carlos Institute of Physics, University of São Paulo, CP 369, São Carlos, SP 13560-970, Brazil.
  • Aoki PH; Faculty of Science and Technology, UNESP, Presidente Prudente, CEP 19060-900 SP,Brazil.
  • Alessio P; Faculty of Science and Technology, UNESP, Presidente Prudente, CEP 19060-900 SP,Brazil.
  • Pavinatto FJ; São Carlos Institute of Physics, University of São Paulo, CP 369, São Carlos, SP 13560-970, Brazil.
  • Miranda PB; São Carlos Institute of Physics, University of São Paulo, CP 369, São Carlos, SP 13560-970, Brazil.
  • Constantino CJ; Faculty of Science and Technology, UNESP, Presidente Prudente, CEP 19060-900 SP,Brazil.
  • Oliveira ON; São Carlos Institute of Physics, University of São Paulo, CP 369, São Carlos, SP 13560-970, Brazil. Electronic address: chu@ifsc.usp.br.
Adv Colloid Interface Sci ; 207: 199-215, 2014 May.
Article em En | MEDLINE | ID: mdl-24530000
Investigation into nanostructured organic films has served many purposes, including the design of functionalized surfaces that may be applied in biomedical devices and tissue engineering and for studying physiological processes depending on the interaction with cell membranes. Of particular relevance are Langmuir monolayers, Langmuir-Blodgett (LB) and layer-by-layer (LbL) films used to simulate biological interfaces. In this review, we shall focus on the use of vibrational spectroscopy methods to probe molecular-level interactions at biomimetic interfaces, with special emphasis on three surface-specific techniques, namely sum frequency generation (SFG), polarization-modulated infrared reflection absorption spectroscopy (PM-IRRAS) and surface-enhanced Raman scattering (SERS). The two types of systems selected for exemplifying the potential of the methods are the cell membrane models and the functionalized surfaces with biomolecules. Examples will be given on how SFG and PM-IRRAS can be combined to determine the effects from biomolecules on cell membrane models, which include determination of the orientation and preservation of secondary structure. Crucial information for the action of biomolecules on model membranes has also been obtained with PM-IRRAS, as is the case of chitosan removing proteins from the membrane. SERS will be shown as promising for enabling detection limits down to the single-molecule level. The strengths and limitations of these methods will also be discussed, in addition to the prospects for the near future.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Biofísica / Membrana Celular / Materiais Biomiméticos / Nanoestruturas / Modelos Biológicos Limite: Animals / Humans Idioma: En Revista: Adv Colloid Interface Sci Assunto da revista: QUIMICA Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Texto completo
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XML
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Biofísica / Membrana Celular / Materiais Biomiméticos / Nanoestruturas / Modelos Biológicos Limite: Animals / Humans Idioma: En Revista: Adv Colloid Interface Sci Assunto da revista: QUIMICA Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda