Strong repulsive interactions in polyelectrolyte-liposome clusters close to the isoelectric point: A sign of an arrested state (Articolo in rivista)

Type

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

Label

• Strong repulsive interactions in polyelectrolyte-liposome clusters close to the isoelectric point: A sign of an arrested state (Articolo in rivista) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

Alternative label

• Bordi, F; Cametti, C; Sennato, S; Truzzolillo, D (2007)
  Strong repulsive interactions in polyelectrolyte-liposome clusters close to the isoelectric point: A sign of an arrested state
  
  (literal)

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

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

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

• 76 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy; Univ Roma La Sapienza, INFM CRS SOFT, Rome, Italy (literal)

Titolo

• Strong repulsive interactions in polyelectrolyte-liposome clusters close to the isoelectric point: A sign of an arrested state (literal)

Abstract

• Charged colloidal particles whose interacting potential is governed by a short-range attraction and a long-range screened electrostatic repulsion contributions form aggregates whose shape, size, and overall charge are sensitively dependent on the balance between attraction and repulsion. In some cases, this class of colloidal systems shows an equilibrium cluster phase, where particles associate and dissociate reversibly into clusters. When the aggregation of the charged particles is induced by adding an oppositely charged polyion, very close to the isoelectric condition, the interaggregate interactions become very strong and a dynamical arrested state seems to occur. We provide some experimental evidences of this structural arrest in a colloid system composed by vesicles built up by a cationic lipid stuck together by an oppositely charged linear polyion, by means of the combined use of static and dynamic light scattering technique complemented by laser Doppler electrophoretic measurements. Our results show that the second virial coefficient, which is related to the potential of mean force between two adjacent aggregates, markedly increases in the vicinity of the isoelectric point. We interpret this increase as a print of strong interparticle interactions, yielding to a dynamical arrested state via cluster growth. (literal)

Prodotto di

• Materia soffice: Self Assembly, Clustering, Arresto Strutturale (MD.P02.015.001) (Modulo)

Autore CNR

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

Insieme di parole chiave

• Keywords of "Strong repulsive interactions in polyelectrolyte-liposome clusters close to the isoelectric point: A sign of an arrested state" (Insieme di parole chiave)

Incoming links:

Autore CNR di

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

Prodotto

• Materia soffice: Self Assembly, Clustering, Arresto Strutturale (MD.P02.015.001) (Modulo)

Insieme di parole chiave di

• Keywords of "Strong repulsive interactions in polyelectrolyte-liposome clusters close to the isoelectric point: A sign of an arrested state" (Insieme di parole chiave)