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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/2310
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dc.contributor.authorNieh, M.P.-
dc.contributor.authorRaghunathan, V.A.-
dc.contributor.authorGlinka, C.J.-
dc.contributor.authorHarroun, T.A.-
dc.contributor.authorKatsaras, J.-
dc.date.accessioned2007-05-15T09:48:48Z-
dc.date.available2007-05-15T09:48:48Z-
dc.date.issued2005-01-10-
dc.identifier.citationMacromolecular Symposia, 2005, Vol.219, p135-145en
dc.identifier.issn1022-1360-
dc.identifier.urihttp://hdl.handle.net/2289/2310-
dc.descriptionRestricted Access.en
dc.description.abstractThe structures of bicelle mixtures composed of dimyristoyl and dihexanoyl phosphatidylcholines (DMPC and DHPC) with DMPC/DHPC molar ratios of 3.2 and 5 are characterized using polarized optical microscopy (POM) and small angle neutron scattering (SANS). Three phases, isotropic (I), chiral nematic (N*) and smectic (S) are observed as temperature (T) varies from 10 to 70 °C. The structure of the magnetically alignable N* phase, which was previously considered to be made up of discoidal micelles, is found to be composed of ribbons. Doping with the charged lipid, dimyristoyl phosphatidylglycerol (DMPG), which has the same 14:0 hydrocarbon chains as DMPC, results in a structural change of the aggregates where only the isotropic and smectic phases are observed. The smectic phase for the mixtures doped with DMPG is shear-alignable and follows one-dimensional swelling. However, at high-T zwitterionic DMPC/DHPC mixtures form multi-lamellar vesicles (MLV) with a relatively constant lamellar spacing of 66 Å, independent of water content.en
dc.format.extent704893 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherWiley InterScienceen
dc.relation.urihttp://dx.doi.org/10.1002/masy.200550112en
dc.rights2005 Wiley InterScienceen
dc.subjectbicelleen
dc.subjectDHPCen
dc.subjectDMPCen
dc.subjectDMPGen
dc.subjectlamellaeen
dc.subjectmultilamellar vesicle (MLV)en
dc.subjectneutron diffractionen
dc.subjectoptical microscopyen
dc.subjectphospholipidsen
dc.subjectribbonsen
dc.subjectsmall angle neutron scattering (SANS)en
dc.titleStructural phase behavior of high-concentration, alignable biomimetic bicelle mixturesen
dc.typeArticleen
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