Phenomenological surface characterization of cationic-lipid monolayers in the presence of oppositely charged polyions (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Phenomenological surface characterization of cationic-lipid monolayers in the presence of oppositely charged polyions (Articolo in rivista) (literal)

Anno

• 2008-01-01T00:00:00+01:00 (literal)

Alternative label

• Truzzolillo, D; Bordi, F; Cametti, C; Sennato, S (2008)
  Phenomenological surface characterization of cationic-lipid monolayers in the presence of oppositely charged polyions
  
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Truzzolillo, D; Bordi, F; Cametti, C; Sennato, S (literal)

Pagina inizio

• 51 (literal)

Pagina fine

• 61 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 319 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• \"[Truzzolillo, D.; Bordi, F.; Cametti, C.; Sennato, S.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy; [Truzzolillo, D.; Bordi, F.; Cametti, C.; Sennato, S.] Univ Roma La Sapienza, INFM, CRS SOFT, I-00185 Rome, Italy (literal)

Titolo

• Phenomenological surface characterization of cationic-lipid monolayers in the presence of oppositely charged polyions (literal)

Abstract

• The thermodynamic properties of monolayers of double chain cationic lipids DOTAP at the air-water interface have been investigated by means of surface pressure and surface potential measurements. We studied the interfacial properties of the film in the liquid-expanded regime during the isothermal compression in the presence of oppositely charged linear polyions (poly (acryl ate) sodium salt, [NaPA]) of different molecular weights. The influence of the ionic character of the aqueous subphase on the polyion adsorption has been studied in different environmental conditions, considering different subphase compositions, ranging from a polyion solution at different concentrations to a salty polyion solution, containing different amount of simple added salt [NaCl]. The data are compared to the ones when only NaCl salt is present in the subphase. The results have been analyzed according to an osmotic-type equation of state and the characteristic parameter associated with the water activity has been evaluated as a function the different molecular weight polyion content. The influence of the simple salt in the adsorption process has been discussed in the light of current scaling theories of polyelectrolyte solutions and the critical salt concentrations inducing a polyion desorption in the different experimental conditions investigated have been estimated. (c) 2007 Elsevier B.V. All rights reserved. (literal)

Autore CNR

• Domenico Truzzolillo (Unità di personale esterno)
• Cesare CAMETTI (Unità di personale esterno)
• FEDERICO BORDI (Persona)

Insieme di parole chiave

• Parole chiave di "Phenomenological surface characterization of cationic-lipid monolayers in the presence of oppositely charged polyions" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• FEDERICO BORDI (Persona)
• Domenico Truzzolillo (Unità di personale esterno)
• Cesare CAMETTI (Unità di personale esterno)

Insieme di parole chiave di

• Parole chiave di "Phenomenological surface characterization of cationic-lipid monolayers in the presence of oppositely charged polyions" (Insieme di parole chiave)