C12E7-DPPC mixed systems studied by pyrene fluorescence emission

doi:10.1007/b11647

Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/62859

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Campo DC	Valor	Idioma
dc.contributor.author	Rei, M. Céu	por
dc.contributor.author	Coutinho, Paulo J. G.	por
dc.contributor.author	Castanheira, Elisabete M. S.	por
dc.contributor.author	Real Oliveira, M. Elisabete C.D.	por
dc.date.accessioned	2020-01-03T13:47:18Z	-
dc.date.available	2020-01-03T13:47:18Z	-
dc.date.issued	2004-06-07	-
dc.identifier.citation	Rei M.C., Coutinho P.J.G., Castanheira E.M.S., Oliveira M.E.C.D.R. () C12E7-DPPC mixed systems studied by pyrene fluorescence emission. In: Miguel M., Burrows H. (eds) Trends in Colloid and Interface Science XVI. Progress in Colloid and Polymer Science (Trends in Colloid and Interface Science XVI), vol 123. Springer, Berlin, Heidelberg	por
dc.identifier.isbn	3540005536	por
dc.identifier.issn	0340-255X	por
dc.identifier.uri	https://hdl.handle.net/1822/62859	-
dc.description	"Trends in colloid and interface science XVI : [the fifteenth meeting of the European Colloid and Interface Society (ECIS) was held in Coimbra from 16th to 21st September 2001] "	por
dc.description.abstract	The lipid/surfactant mixed interactions between the lipids dipalmitoylphosphatidylcholine (DPPC) or egg phosphatidylcholine (EggPC) and the non-ionic surfactant C12E7 [C12H25(OCH2CH2)7OH] were studied by the use of the fluorescence properties of pyrene, namely the excimer to monomer emission intensity ratio, IE/IM. Previously, the behaviour of the C12E7/water system was also monitored. It was found to exhibit a significant preassociation of pyrene in ground state, which is more pronounced in micelles than in premicellar aggregates. In mixed systems, pyrene has proved to detect the changes from mixed bilayers to mixed micelles. The temperature influence in lipid/surfactant interactions was also studied. It was found that the pyrene IE/IM ratio is sensitive to the phase transition of DPPC. Pyrene microcrystallites are probably present in the gel phase region, justifying the enhancement of IE/IM in the DPPC/C12E7 system at low temperatures.	por
dc.description.sponsorship	The authors would like to thank Fundação para a Ciência e a Tecnologia (FCT) for financial support (Project 32901/99). M.C. Rei acknowledges FCT for a grant under the same project.	por
dc.language.iso	eng	por
dc.publisher	Springer Verlag	por
dc.rights	openAccess	por
dc.rights.uri	http://creativecommons.org/licenses/by-nc/4.0/	por
dc.subject	Non-ionic surfactants	por
dc.subject	Dipalmitoylphosphatidylcholine	por
dc.subject	Egg phosphatidylcholine	por
dc.subject	Lipid/surfactant interactions	por
dc.subject	Pyrene emission	por
dc.subject	Ground-state aggregation	por
dc.title	C12E7-DPPC mixed systems studied by pyrene fluorescence emission	por
dc.type	conferencePaper	por
dc.peerreviewed	yes	por
dc.relation.publisherversion	https://link.springer.com/chapter/10.1007/978-3-540-36462-7_20	por
oaire.citationStartPage	83	por
oaire.citationEndPage	87	por
oaire.citationVolume	123	por
dc.identifier.doi	10.1007/b11647	por
dc.subject.fos	Ciências Naturais::Ciências Físicas	por
dc.subject.wos	Science & Technology	por
sdum.journal	Progress in Colloid and Polymer Science	por
sdum.conferencePublication	TRENDS IN COLLOID AND INTERFACE SCIENCE XVI	por
oaire.version	VoR	por
Aparece nas coleções:	CDF - FAMO - Artigos/Papers (with refereeing)