منابع مشابه
Vesicle-to-micelle transition induced by grafted diblock copolymers.
We study by small-angle neutron scattering the vesicle-to-micelle transition induced by anchoring diblock copolymers on the surfactant membranes. Vesicles are made using the ternary system SDS (sodium dodecyl sulfate)/octanol/PS-POE (polystyrene-polyoxyethylene), chosen as a model of more complex biological systems. The anchored polymer chains destabilize the membranes and lead to the formation...
متن کاملMicelle-to-vesicle transition of an iron-chelating microbial surfactant, marinobactin E.
Small-angle neutron scattering (SANS) and dynamic light scattering (DLS) techniques have been applied to study the self-assembly processes of a microbially produced siderophore, marinobactin E (ME). ME is one of a series of marinobactins A-E that facilitate Fe(III) acquisition by the source bacterium through coordination of Fe(III) by the marinobactin headgroup. ME is a six-amino-acid peptide a...
متن کاملDoes PNIPAM block really retard the micelle-to-vesicle transition of its copolymer?
The well-known coil-to-globule transition of poly(N-isopropyl acrylamide) (PNIPAM) at its LCST lasts as short as hundred of seconds with fully reversibility. However, for the PNIPAM-containing block copolymers, thermal transformation from micelles to vesicles caused by the conformation transition of PNIPAM took as long as several weeks, even at the temperatures much higher than the LCST, and wi...
متن کاملVesicle-micelle structural transition of phosphatidylcholine bilayers and Triton X-100.
The structural transition stages induced by the interaction of the non-ionic surfactant Triton X-100 on phosphatidylcholine unilamellar vesicles were studied by means of static and dynamic light-scattering, transmission-electron-microscopy (t.e.m.) and permeability changes. A linear correlation was observed between the effective surfactant/lipid molar ratios (Re) ('three-stage' model proposed f...
متن کاملKinetics of the micelle-to-vesicle transition: aqueous lecithin-bile salt mixtures.
Important routes to lipid vesicles (liposomes) are detergent removal techniques, such as dialysis or dilution. Although they are widely applied, there has been only limited understanding about the structural evolution during the formation of vesicles and the parameters that determine their properties. We use time-resolved static and dynamic light scattering to study vesicle formation in aqueous...
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ژورنال
عنوان ژورنال: membrane
سال: 1993
ISSN: 0385-1036,1884-6440
DOI: 10.5360/membrane.18.96