Ion-driven ATP pump by self-organized hybrid membrane materials.
We report new hybrid organic-inorganic materials, based on macrocyclic receptors 1-3 self-organized in tubular superstructures prepared by sol-gel process. Fourier transform infrared (FTIR) and NMR spectroscopic analyses demonstrate that the self-organization by hydrogen bonding of organogel superstructures of 2 and 3 were preserved in the hybrid materials throughout the sol-gel process. The molecular arrangement of heteroditopic receptors defines a particularly attractive functional transport device for both cation (tubular macrocycles) and anion (sandwich-urea) directional-diffusion transport mechanism in the hybrid membrane material. This system has been employed successfully to design a solid dense membrane, functioning as an ion-powered adenosine triphosphate (ATP(2)(-)) pump, and illustrates how a self-organized hybrid material performs interesting and potentially useful functions.
Barboiu
Mihail
M
Institut Européen des Membranes, CNRS 5635, Place Eugène Bataillon, CC 47, F-34095 Montpellier, Cedex 5, France. barboiu@iemm.univ-montp2.fr
Cerneaux
Sophie
S
van der Lee
Arie
A
Vaughan
Gavin
G
D000255:Adenosine Triphosphate / Q000737:chemistry* / Q000378:metabolism; D018360:Crystallography, X-Ray; D004988:Ethers, Cyclic / Q000737:chemistry*; D006860:Hydrogen Bonding; D046911:Macromolecular Substances; D008567:Membranes, Artificial; D008958:Models, Molecular; D019906:Nuclear Magnetic Resonance, Biomolecular; D017550:Spectroscopy, Fourier Transform Infrared; D013816:Thermodynamics
D004988:Ethers, Cyclic; D046911:Macromolecular Substances; D008567:Membranes, Artificial; D000255:Adenosine Triphosphate