Interconversion of planar networks and vesicles triggered by temperature.
Macromol Rapid Commun
; 31(11): 975-9, 2010 Jun 02.
Article
en En
| MEDLINE
| ID: mdl-21590845
ABSTRACT
Dumbbell-shaped amphiphiles based on an elongated rod segment can self-assemble into planar networks with in-plane hexagonally ordered pores in aqueous solution. On increasing temperature, the 2D networks change into hollow capsules passing through the closed sheets as an intermediate structure due to a LCST behavior of the oligoether dendritic exterior. The primary driving force for this interesting feature seems to originate from a consequence of the energy balance between hydrophobic interactions of anisotropic rod segments and alkyl chains, and repulsive interactions between dissimilar blocks. This dynamic structural variation triggered by external stimuli in a self-assembling system can provide a useful strategy to create smart supramolecular materials and biomimetic systems.
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Macromol Rapid Commun
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2010
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Article