NDLI: Curvature-driven molecular demixing in the budding and breakup of mixed component worm-like micelles

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Dendronized cavitands: A step towards a synthetic viral capsid?

Stomatosomes: perforated bilayer structures

Microstructural regimes of colloidal rod suspensions, gels, and glasses

A robust superhydrophobic and superoleophobic surface with inverse-trapezoidal microstructures on a large transparent flexible substrate

Self-assembly hollow nanosphere for enzyme encapsulation

Wetting process in superhydrophobic disordered surfaces

Programmed assembly of metallodielectric patchy particles in external AC electric fields

Curvature-driven molecular demixing in the budding and breakup of mixed component worm-like micelles

Self-assembled periodic liquid crystal defects array for soft lithographic template

Characterization of adhesion phenomena and contact of surfaces by soft colloidal probe AFM

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Anti-fouling phosphorylcholine bearing polyelectrolyte multilayers: Cell adhesion resistance at rest and under stretching

Effects of surface ligand density on lipid-monolayer-mediated 2D assembly of proteins

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Complex micelles from the self-assembly of coil-rod-coil amphiphilic triblock copolymers in selective solvents

A microscopic model for colloidal gels with directional effective interactions: network induced glassy dynamics

Polymer dynamics under soft confinement in a self-assembled system

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Curvature-driven molecular demixing in the budding and breakup of mixed component worm-like micelles

Content Provider	Royal Society of Chemistry (RSC)
Author	Loverde, Sharon M. Ortiz, Vanessa Kamien, Randall D. Klein, Michael L. Discher, Dennis E.
Copyright Year	2010
Abstract	Amphiphilic block copolymers of suitable proportions can self-assemble into surprisingly long and stable worm-like micelles, but the intrinsic polydispersity of polymers as well as polymer blending efforts and the increasing use of degradable chains all raise basic questions of curvature–composition coupling and morphological stability of these high curvature assemblies. Molecular simulations here of polyethylene glycol (PEG) based systems show that a systematic increase in the hydrated PEG fraction, in both monodisperse and binary blends, induces budding and breakup into spherical and novel ‘dumbbell’ micelles—as seen in electron microscopy images of degradable worm-like micelles. Core dimension, d, in our large-scale, long-time dissipative particle dynamics (DPD) simulations is shown to scale with chain-length, N, as predicted theoretically by the strong segregation limit (d ≈ N2/3), but morphological transitions of binary mixtures are only crudely predicted by simple mixture rules. Here we show that for weakly demixing diblock copolymers, the coupling between local interfacial concentration and mean curvature can be described with a simple linear relationship. The computational methods developed here for PEG-based assemblies should be useful for many high curvature nanosystems.
Starting Page	1419
Ending Page	1425
Page Count	7
File Format	HTM / HTML PDF
ISSN	1744683X
Volume Number	6
Issue Number	7
Journal	Soft Matter
DOI	10.1039/b919581e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Dispersity Transmission electron microscopy Polyethylene glycol Dumbbell Dissipative particle dynamics Polymer Curvature Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Chemistry Condensed Matter Physics

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Curvature-driven molecular demixing in the budding and breakup of mixed component Worm-like Micelles

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Curvature-driven molecular demixing in the budding and breakup of mixed component worm-like micelles

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