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Electrostatically gated membrane permeability in inorganic protocells
by
Weaver, Jonathan V M
, Li, Mei
, Mann, Stephen
, Harbron, Rachel L
, Binks, Bernard P
in
Alkanes - chemistry
/ Artificial Cells - chemistry
/ Artificial Cells - metabolism
/ Cell Membrane Permeability
/ Emulsions
/ Inorganic Chemicals - chemistry
/ Nanoparticles - chemistry
/ Particle Size
/ Phosphorylation
/ Polymers
/ Silanes - chemistry
/ Silicon Dioxide - chemistry
/ Static Electricity
/ Water - chemistry
2013
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Electrostatically gated membrane permeability in inorganic protocells
by
Weaver, Jonathan V M
, Li, Mei
, Mann, Stephen
, Harbron, Rachel L
, Binks, Bernard P
in
Alkanes - chemistry
/ Artificial Cells - chemistry
/ Artificial Cells - metabolism
/ Cell Membrane Permeability
/ Emulsions
/ Inorganic Chemicals - chemistry
/ Nanoparticles - chemistry
/ Particle Size
/ Phosphorylation
/ Polymers
/ Silanes - chemistry
/ Silicon Dioxide - chemistry
/ Static Electricity
/ Water - chemistry
2013
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Do you wish to request the book?
Electrostatically gated membrane permeability in inorganic protocells
by
Weaver, Jonathan V M
, Li, Mei
, Mann, Stephen
, Harbron, Rachel L
, Binks, Bernard P
in
Alkanes - chemistry
/ Artificial Cells - chemistry
/ Artificial Cells - metabolism
/ Cell Membrane Permeability
/ Emulsions
/ Inorganic Chemicals - chemistry
/ Nanoparticles - chemistry
/ Particle Size
/ Phosphorylation
/ Polymers
/ Silanes - chemistry
/ Silicon Dioxide - chemistry
/ Static Electricity
/ Water - chemistry
2013
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Electrostatically gated membrane permeability in inorganic protocells
Journal Article
Electrostatically gated membrane permeability in inorganic protocells
2013
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Overview
Although several strategies are now available to produce functional microcompartments analogous to primitive cell-like structures, little progress has been made in generating protocell constructs with self-controlled membrane permeability. Here we describe the preparation of water-dispersible colloidosomes based on silica nanoparticles and delineated by a continuous semipermeable inorganic membrane capable of self-activated, electrostatically gated permeability. We use crosslinking and covalent grafting of a pH-responsive copolymer to generate an ultrathin elastic membrane that exhibits selective release and uptake of small molecules. This behaviour, which depends on the charge of the copolymer coronal layer, serves to trigger enzymatic dephosphorylation reactions specifically within the protocell aqueous interior. This system represents a step towards the design and construction of alternative types of artificial chemical cells and protocell models based on spontaneous processes of inorganic self-organization.
Publisher
Nature Publishing Group
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