DODAB and DODAC bilayer-like aggregates in the micromolar surfactant concentration domain

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorFeitosa, Eloi-
Autor(es): dc.creatorRosa Alves, Fernanda-
Autor(es): dc.creatorCastanheira, Elisabete M. S.-
Autor(es): dc.creatorOliveira, M. Elisabete C. D. Real-
Data de aceite: dc.date.accessioned2021-03-10T17:21:02Z-
Data de disponibilização: dc.date.available2021-03-10T17:21:02Z-
Data de envio: dc.date.issued2014-05-20-
Data de envio: dc.date.issued2014-05-20-
Data de envio: dc.date.issued2009-05-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s00396-009-2008-1-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/22052-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/22052-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionFundação para a Ciência e a Tecnologia (FCT)-
Descrição: dc.descriptionIn the millimolar concentration domain (typically 1 mM), dioctadecyldimethylammonium bromide and chloride (DODAX, X representing Br(-) or Cl(-) counterions) molecules assemble in water as large unilamellar vesicles. Differential-scanning calorimetry (DSC) is a suitable technique to obtain the melting temperature (T (m)) characteristic of surfactant bilayers, while fluorescence spectroscopy detects formation of surfactant aggregates, like bilayers. These two techniques were combined to investigate the assembly of DODAX molecules at micromolar concentrations, from 10 to 100 mu M. At 1 mM surfactant, T (m) a parts per thousand aEuro parts per thousand 45 A degrees C and 49 A degrees C, respectively, for DODAB and DODAC. DSC and fluorescence of Nile Red were used to show the formation of DODAX aggregates, at the surfactant concentration as low as 10 mu M, whose T (m) decreases monotonically with increasing DODAX concentration to attain the value for the ordinary vesicles. The data indicate that these aggregates are organized as bilayer-like structures.-
Formato: dc.format591-599-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Relação: dc.relationColloid and Polymer Science-
Relação: dc.relation1.967-
Direitos: dc.rightsclosedAccess-
Palavras-chave: dc.subjectDODAB-
Palavras-chave: dc.subjectDODAC-
Palavras-chave: dc.subjectDSC-
Palavras-chave: dc.subjectNile Red-
Palavras-chave: dc.subjectCationic vesicle-
Palavras-chave: dc.subjectMelting temperature-
Palavras-chave: dc.subjectSteady-state fluorescence-
Título: dc.titleDODAB and DODAC bilayer-like aggregates in the micromolar surfactant concentration domain-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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