Self-organized hybrid membranes forming anionic and cationic permeation paths for the transport of biological solutes

Thin supported films based on hybrid siloxane materials containing different organic receptors: propyl, amino, urea and/or 15-crown-5 were synthesized by sol–gel process. They have been characterized by ATR-infrared spectroscopy, SEM and contact angle measurements. Their transport properties provide...

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Bibliographic Details
Published in:Journal of membrane science 2005-02, Vol.247 (1), p.87-94
Main Authors: Cerneaux, Sophie, Hovnanian, Nadine
Format: Article
Language:English
Subjects:
Chemical Sciences
Facilitated transport
Hybrid silica
Membrane
Self-organization
Sol–gel
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Summary:Thin supported films based on hybrid siloxane materials containing different organic receptors: propyl, amino, urea and/or 15-crown-5 were synthesized by sol–gel process. They have been characterized by ATR-infrared spectroscopy, SEM and contact angle measurements. Their transport properties provide evidence of the key-role of these receptors as well as their organization into the dense inorganic network. Self-organized urea-based membranes with or without macrocycle moved Na 2ATP solute in defined transport conditions. A mechanism was proposed in which an electrical potential-dependant alkali salt concentration gradient could mediate this large biological solute.
ISSN:0376-7388
1873-3123
DOI:10.1016/j.memsci.2004.08.025