Langmuir-Blodgett Film of Hydrophobin Protein from Pleurotus ostreatus at the Air-Water Interface (Articolo in rivista)

Type
Label
  • Langmuir-Blodgett Film of Hydrophobin Protein from Pleurotus ostreatus at the Air-Water Interface (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Houmadi S., Ciuchi F., De Santo MP., De Stefano L., Rea I., Giardina P., Armenante A., Lacaze E., Giocondo M. (2008)
    Langmuir-Blodgett Film of Hydrophobin Protein from Pleurotus ostreatus at the Air-Water Interface
    in Langmuir
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Houmadi S., Ciuchi F., De Santo MP., De Stefano L., Rea I., Giardina P., Armenante A., Lacaze E., Giocondo M. (literal)
Pagina inizio
  • 12953 (literal)
Pagina fine
  • 12957 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 24 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Houmadi, S.; Ciuchi, F.; De Santo, M. P.; Giocondo, M.] Univ Calabria, Dipartimento Fis, Liquid Crystals Lab, CNR,INFM,LICRYL, I-87036 Arcavacata Di Rende, Italy; [De Stefano, L.; Rea, I.] Unita Napoli, Ist Microelettron & Microsistemi, IMM, CNR, I-80131 Naples, Italy; [Giardina, P.; Armenante, A.] Univ Naples Federico 2, Dipartimento Chim Organ & Biochim, I-80126 Naples, Italy; [Lacaze, E.] Univ Paris 06, INSP, CNRS, UMR 7588, F-75015 Paris, France (literal)
Titolo
  • Langmuir-Blodgett Film of Hydrophobin Protein from Pleurotus ostreatus at the Air-Water Interface (literal)
Abstract
  • We present results concerning the formation of Langmuir-Blodgett (LB) films of a class I hydrophobin from Pleurotus ostreatus at the air-water interface, and their structure as Langmuir-Blodgett (LB) films when deposited on silicon Substrates. LB films of the hydrophobin were investigated by atomic force microscopy (AFM). We observed that the compressed film at the air-water interface exhibits a molecular depletion even at low surface pressure. In order to estimate the surface molecular concentration, we fit the experimental isotherm with Volmer's equation describing the equation of state for molecular monolayers. We found that about 1/10 of the molecules contribute to the surface film formation. When transferred on silicon substrates, compact and uniform monomolecular layers about 2.5 nm thick, comparable to a typical molecular size, were observed. The monolayers coexist with protein aggregates, under the typical rodlet form with a uniform thickness of about 5.0 nm. The observed rodlets appear to be a hydrophilic bilayer and can then be responsible for the surface molecular depletion. (literal)
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