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@ARTICLE{Greenall:15013,
author = {Greenall, M.J. and Gompper, G.},
title = {{B}ilayers {C}onnected by {T}hreadlike {M}icelles in
{A}mphiphilic {M}ixtures: {A} {S}elf-{C}onsistent {F}ield
{T}heory {S}tudy},
journal = {Langmuir},
volume = {27},
issn = {0743-7463},
address = {Washington, DC},
publisher = {ACS Publ.},
reportid = {PreJuSER-15013},
pages = {3416 - 3423},
year = {2011},
note = {Record converted from VDB: 12.11.2012},
abstract = {Binary 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.},
keywords = {J (WoSType)},
cin = {IAS-2 / ICS-2},
ddc = {670},
cid = {I:(DE-Juel1)IAS-2-20090406 / I:(DE-Juel1)ICS-2-20110106},
pnm = {BioSoft: Makromolekulare Systeme und biologische
Informationsverarbeitung},
pid = {G:(DE-Juel1)FUEK505},
shelfmark = {Chemistry, Multidisciplinary / Chemistry, Physical /
Materials Science, Multidisciplinary},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:21381728},
UT = {WOS:000288970900032},
doi = {10.1021/la200138b},
url = {https://juser.fz-juelich.de/record/15013},
}