Effect of Sonication on the Thermotropic Behavior of DODAB Vesicles Studied by Fluorescence Probe Solubilization

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorFeitosa, Eloi-
Autor(es): dc.creatorBenatti, Carlos Roberto-
Autor(es): dc.creatorTiera, Marcio Jose-
Data de aceite: dc.date.accessioned2021-03-10T17:20:57Z-
Data de disponibilização: dc.date.available2021-03-10T17:20:57Z-
Data de envio: dc.date.issued2014-05-20-
Data de envio: dc.date.issued2014-05-20-
Data de envio: dc.date.issued2010-07-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s11743-009-1169-8-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/22023-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/22023-
Descrição: dc.descriptionThe effect of sonication on fluorescence probe solubilization in cationic vesicles of dioctadecyldimethylammonium bromide (DODAB) was investigated by steady-state fluorescence of pyrene (Py), trans-diphenylpolyenes-diphenylbutadiene (DPB), diphenylhexatriene (DPH), and their corresponding 4,4'-dialkyl derivatives 4B4A and 4H4A fluorescence probes. The data indicate that sonication affects the bilayer polarity, the melting temperature (T (m)), and the cooperativity of the melting process due to changes in vesicle morphology. The effect of temperature on the fluorescence intensity and yielding I broken vertical bar(f) and anisotropy < r > shows that the ionizable probes 4B4A and 4H4A are solubilized close to the vesicle interfaces, whereas the non-ionizable DPH and DPB are deeper in the bilayers. Py solubilization indicates that sonicated vesicles exhibit less densely packed bilayers.-
Formato: dc.format273-280-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer Heidelberg-
Relação: dc.relationJournal of Surfactants and Detergents-
Relação: dc.relation1.454-
Relação: dc.relation0,378-
Direitos: dc.rightsclosedAccess-
Palavras-chave: dc.subjectDODAB-
Palavras-chave: dc.subjectPyrene-
Palavras-chave: dc.subjecttrans-Diphenylpolyenes-
Palavras-chave: dc.subjectFluorescence anisotropy-
Palavras-chave: dc.subjectMelting temperature-
Palavras-chave: dc.subjectCationic vesicle-
Título: dc.titleEffect of Sonication on the Thermotropic Behavior of DODAB Vesicles Studied by Fluorescence Probe Solubilization-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.