Giant Hexagonal Superstructures in Diblock-Copolymer Membranes

Haluska, Christopher K.; Góźdź, Wojciech T.; Döbereiner, Jürgen; Förster, Stephan; Gompper, Gerhard

doi:10.1103/physrevlett.89.238302

Cited by 63 publications

(47 citation statements)

References 24 publications

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“…Stable high-genus vesicles are observed. [38] The genus is a quantity from differential geometry, meaning the number of holes or handles of a particle. A sphere has zero genus, g = 0, a doughnut, torus, or coffee mug has a genus of unity, g = 1, buttons with two holes have g = 2.…”

Section: Progress Reportmentioning

confidence: 99%

Vesicles and Liposomes: A Self‐Assembly Principle Beyond Lipids

Antonietti¹,

2003

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This Progress Report describes the latest advances in vesicles and liposomes. Recent work on the self‐assembly of complex polymer systems shows that the formation of polymer vesicles or closed hull structures is archetypal, leading to fascinating new possibilities and applications in materials science. A general view of the underlying self‐assembly mechanisms leading to vesicles and the control of size, shape, and other vesicular properties by physicochemical means is presented, as background. This is followed by an overview of the recently described new classes of polymer and supramolecular tectons that make vesicle formation a more general phenomenon going beyond just lipids. Finally, the potential applications of vesicles, including non‐lipid vesicles, are outlined.

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Section: Progress Reportmentioning

confidence: 99%

Vesicles and Liposomes: A Self‐Assembly Principle Beyond Lipids

Antonietti¹,

2003

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“…Lamellar layers were detached from the substrates in the form of spherical and cylindrical vesicles, in addition to highly complex structures. [13,14] Swelling and formation of vesicle structures are observed regularly when a dry lipid film is immersed in water or a buffer solution. [15] This is a dynamic process that evolves over many hours [16] and depends on system parameters such as temperature and osmotic pressure that may be applied to the membrane.…”

Section: Pdms With Ammonium Groups In the Main Chainmentioning

confidence: 99%

Ammonium‐Functionalized Polydimethylsiloxanes: Synthesis and Properties

Novi¹,

Mourran²,

Keul³

et al. 2006

Macro Chemistry & Physics

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Summary: Polydimethylsiloxane with trimethylammonium end groups and polydimethylsiloxane with diethylmethylammonium groups in the main chain was prepared by two routes. A novel carbonate coupler – (2‐oxo‐1,3‐dioxolan‐4‐yl) methyl phenyl carbonate – and the amine compounds α,ω‐(3‐aminopropyl) polydimethylsiloxane, 3‐(dimethylamino)‐1‐propylamine, and bis(2‐amino ethyl)amine served as the starting materials. The polymers obtained are hydrophobic and contain ammonium groups suitable for interaction with negatively charged surfaces. Thus these materials can be used for special surface modifications. Thin films were prepared by spin‐coating. Their morphology and properties were determined by means of optical microscopy, SFM, and contact angle measurements. The particle size distribution in aqueous solution of the vesicles formed was determined by means of a laser scattering technique; the particle sizes determined correspond to those obtained by optical microscopy. Finally, the antibacterial effects of these polymers with hydrophobic and cationic groups were tested.α,ω‐Diammonium octadimethylsiloxane molecule (6), an SFM phase image for a spin‐coated film of 6 on a silicon wafer, and a scheme of the way the molecules stack on the surface.magnified imageα,ω‐Diammonium octadimethylsiloxane molecule (6), an SFM phase image for a spin‐coated film of 6 on a silicon wafer, and a scheme of the way the molecules stack on the surface.

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“…127 These vesicles are called polymersomes in analogy to similar structures formed by lipids, (liposomes). The surface of such a polymersome is composed of the double bilayer connected by passages.…”

Section: A Biological Membranes and Vesiclesmentioning

confidence: 99%