Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/10374
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dc.contributor.authorCosta, Diana-
dc.contributor.authorHansson, Per-
dc.contributor.authorSchneider, Stefanie-
dc.contributor.authorMiguel, M. Graça-
dc.contributor.authorLindman, Björn-
dc.date.accessioned2009-06-26T08:51:05Z-
dc.date.available2009-06-26T08:51:05Z-
dc.date.issued2006-04-10-
dc.identifier.citationBiomacromolecules. 7:4 (2006) 1090-1095en_US
dc.identifier.issn1525-7797-
dc.identifier.urihttp://hdl.handle.net/10316/10374-
dc.description.abstractThe interaction of covalently cross-linked double-stranded (ds) DNA gels and cetyltrimethylammonium bromide (CTAB) is investigated. The volume transition of the gels that follows the absorption of the oppositely charged surfactant from aqueous solution is studied. As do other polyelectrolyte networks, DNA networks form complexes with oppositely charged surfactant micelles at surfactant concentrations far below the critical micelle concentration (cmc) of the polymer-free solution. The size of the absorbed surfactant aggregates is determined from time-resolved fluorescence quenching (TRFQ). At low surfactant concentrations, small discrete micelles (160 < N < 210) are found, whereas large micelles (N > 500) form at surfactant concentrations of 1 mM. When the DNA is in excess of the surfactant, the surfactant binding is essentially quantitative. The gel volume decreases by 90% when the surfactant to DNA charge ratio, β, increases from 0 to 1.en_US
dc.language.isoengen_US
dc.publisherAmerican Chemical Societyen_US
dc.rightsopenAccesseng
dc.titleInteraction between Covalent DNA Gels and a Cationic Surfactanten_US
dc.typearticleen_US
dc.identifier.doi10.1021/bm0508919-
uc.controloAutoridadeSim-
item.fulltextCom Texto completo-
item.grantfulltextopen-
item.languageiso639-1en-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.orcid0000-0002-1601-5501-
crisitem.author.orcid0000-0002-7493-9112-
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais
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