Ion-driven ATP pump by self-organized hybrid membrane materials

J Am Chem Soc. 2004 Mar 24;126(11):3545-50. doi: 10.1021/ja039146z.

Abstract

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adenosine Triphosphate / chemistry*
  • Adenosine Triphosphate / metabolism
  • Crystallography, X-Ray
  • Ethers, Cyclic / chemistry*
  • Hydrogen Bonding
  • Macromolecular Substances
  • Membranes, Artificial*
  • Models, Molecular
  • Nuclear Magnetic Resonance, Biomolecular
  • Spectroscopy, Fourier Transform Infrared
  • Thermodynamics

Substances

  • Ethers, Cyclic
  • Macromolecular Substances
  • Membranes, Artificial
  • Adenosine Triphosphate