Vesicle-to-micelle transition in aqueous solutions of amphiphilic calixarene derivatives (Articolo in rivista)

Type
Label
  • Vesicle-to-micelle transition in aqueous solutions of amphiphilic calixarene derivatives (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevE.73.051904 (literal)
Alternative label
  • N. Micali; V. Villari; G.L.M. Consoli; F. Cunsolo; C. Geraci (2006)
    Vesicle-to-micelle transition in aqueous solutions of amphiphilic calixarene derivatives
    in Physical review. E, Statistical, nonlinear, and soft matter physics (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • N. Micali; V. Villari; G.L.M. Consoli; F. Cunsolo; C. Geraci (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 73 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • Article051904pp8 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 5 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-Istituto per i Processi Chimico-Fisici, Via La Farina 237, I-98123, Messina, Italy CNR-Istituto di Chimica Biomolecolare, Via del Santuario 110, I-95028 Valverde, Catania, Italy (literal)
Titolo
  • Vesicle-to-micelle transition in aqueous solutions of amphiphilic calixarene derivatives (literal)
Abstract
  • Structure and conformation of spontaneous self-assembled calix[8]arenes derivatives are studied by means of static and dynamic light scattering and electrophoretic mobility. These amphiphilic molecules are in the aggregated form in aqueous solution, in a wide range of pH; they take a vesicle structure in neutral and basic pH environment, but, in relatively strong acidic conditions (below pH=4.5), a transition from vesicle to micelle occurs. The structural change is driven by the surface charge density. At neutral pH calix[8]arenes take a negative surface charge, which prevents coagulation and ensures stability; at acidic pH the surface charge tend to become positive because of the protonation of the hydrophilic head. These pH-responsive aggregates, able to release an encapsulated hydrophilic guest, are promising systems for application as nanocarriers. (literal)
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