Spontaneously formed unilamellar vesicles with path-dependent size distribution

We observe the spontaneous formation of path-dependent monodisperse and polydisperse phospholipid unilamellar vesicles (ULV) from two different equilibrium morphologies specifically, disklike micelles and extended lamellae, respectively. On heating beyond a temperature Tc, low temperature disklike m...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 21(2005), 15 vom: 19. Juli, Seite 6656-61
1. Verfasser: Nieh, Mu-Ping (VerfasserIn)
Weitere Verfasser: Raghunathan, Velayudhan A, Kline, Steve R, Harroun, Thad A, Huang, Chien-Yueh, Pencer, Jeremy, Katsaras, John
Format: Aufsatz
Sprache:English
Veröffentlicht: 2005
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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100 1 |a Nieh, Mu-Ping  |e verfasserin  |4 aut 
245 1 0 |a Spontaneously formed unilamellar vesicles with path-dependent size distribution 
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520 |a We observe the spontaneous formation of path-dependent monodisperse and polydisperse phospholipid unilamellar vesicles (ULV) from two different equilibrium morphologies specifically, disklike micelles and extended lamellae, respectively. On heating beyond a temperature Tc, low temperature disklike micelles, or so-called bicelles, transform into lamellae. Dilution of the lamellar phase, at a fixed temperature, results in a complete unbinding transition and the formation of polydisperse ULV, demonstrating the instability of the lamellar phase. On the other hand, heating of a dilute bicellar phase above Tc results in monodisperse ULV, which on cooling revert back to bicelles for lipid concentrations phi > or = 0.5 wt % and transform into oblate ellipsoids for phi = 0.1 wt %, a morphology not previously seen in "bicellar" lipid mixtures. Monodisperse ULV reform on heating of the oblate ellipsoids 
650 4 |a Journal Article 
700 1 |a Raghunathan, Velayudhan A  |e verfasserin  |4 aut 
700 1 |a Kline, Steve R  |e verfasserin  |4 aut 
700 1 |a Harroun, Thad A  |e verfasserin  |4 aut 
700 1 |a Huang, Chien-Yueh  |e verfasserin  |4 aut 
700 1 |a Pencer, Jeremy  |e verfasserin  |4 aut 
700 1 |a Katsaras, John  |e verfasserin  |4 aut 
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