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000015013 0247_ $$2pmid$$apmid:21381728
000015013 0247_ $$2DOI$$a10.1021/la200138b
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000015013 041__ $$aeng
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000015013 084__ $$2WoS$$aChemistry, Multidisciplinary
000015013 084__ $$2WoS$$aChemistry, Physical
000015013 084__ $$2WoS$$aMaterials Science, Multidisciplinary
000015013 1001_ $$0P:(DE-Juel1)VDB98358$$aGreenall, M.J.$$b0$$uFZJ
000015013 245__ $$aBilayers Connected by Threadlike Micelles in Amphiphilic Mixtures: A Self-Consistent Field Theory Study
000015013 260__ $$aWashington, DC$$bACS Publ.$$c2011
000015013 300__ $$a3416 - 3423
000015013 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000015013 440_0 $$04081$$aLangmuir$$v27$$x0743-7463$$y7
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000015013 520__ $$aBinary mixtures of amphiphiles in solution can self-assemble into a wide range of structures when the two species individually form aggregates of different curvatures. A specific example of this is seen in solutions of lipid mixtures where the two species form lamellar structures and spherical micelles, respectively. Here, vesicles connected by threadlike micelles can form in a narrow concentration range of the sphere-forming lipid. We present a study of these structures based on self-consistent field theory (SCFT), a coarse-grained model of amphiphiles. First, we show that the addition of sphere-forming lipid to a solution of lamella-former can lower the free energy of cylindrical, threadlike micelles and hence encourage their formation. Next, we demonstrate the coupling between composition and curvature; specifically, that increasing the concentration of sphere-former in a system of two bilayers connected by a thread leads to a transfer of amphiphile to the thread. We further show that the two species are segregated within the structure, with the concentration of sphere-former being significantly higher in the thread. Finally, the addition of larger amounts of sphere-former is found to destabilize the junctions linking the bilayers to the cylindrical micelle, leading to a breakdown of the connected structures. The degree of segregation of the amphiphiles and the amount of sphere-former required to destabilize the junctions is shown to be sensitive to the length of the hydrophilic block of the sphere-forming amphiphiles.
000015013 536__ $$0G:(DE-Juel1)FUEK505$$2G:(DE-HGF)$$aBioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung$$cP45$$x0
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000015013 650_7 $$2WoSType$$aJ
000015013 7001_ $$0P:(DE-Juel1)130665$$aGompper, G.$$b1$$uFZJ
000015013 773__ $$0PERI:(DE-600)2005937-1$$a10.1021/la200138b$$gVol. 27, p. 3416 - 3423$$p3416 - 3423$$q27<3416 - 3423$$tLangmuir$$v27$$x0743-7463$$y2011
000015013 8567_ $$uhttp://dx.doi.org/10.1021/la200138b
000015013 909CO $$ooai:juser.fz-juelich.de:15013$$pVDB
000015013 9131_ $$0G:(DE-Juel1)FUEK505$$bSchlüsseltechnologien$$kP45$$lBiologische Informationsverarbeitung$$vBioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung$$x0
000015013 9132_ $$0G:(DE-HGF)POF3-552$$1G:(DE-HGF)POF3-550$$2G:(DE-HGF)POF3-500$$aDE-HGF$$bKey Technologies$$lBioSoft  Fundamentals for future Technologies in the fields of Soft Matter and Life Sciences$$vEngineering Cell Function$$x0
000015013 9141_ $$y2011
000015013 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
000015013 9201_ $$0I:(DE-Juel1)IAS-2-20090406$$gIAS$$kIAS-2$$lTheorie der Weichen Materie und Biophysik$$x1$$zIFF-2
000015013 9201_ $$0I:(DE-Juel1)ICS-2-20110106$$gICS$$kICS-2$$lTheorie der weichen Materie und Biophysik$$x0
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