A novel method to fabricate patterned bilayer lipid membranes

Langmuir. 2007 Jan 30;23(3):1354-8. doi: 10.1021/la062636v.

Abstract

We introduce a new method for forming tethered bilayer lipid membranes on surfaces patterned using a photocleavable self-assembled monolayer (SAM). A SAM terminated with a hydrophobic fluorocarbon residue was bound to a gold surface through a link containing a photocleavable ortho-nitrobenzyl moiety. Hydrophilic regions were produced by irradiation with soft UV (365 nm) through a photomask. The patterned surface was characterized by scanning electron microscopy and electrochemical impedance spectroscopy. Tethered bilayer lipid membranes with well-defined bilayer and monolayer regions were then formed by exposure to egg PC vesicles. The membranes had resistance and capacitance values of 0.52 MOmega.cm2 and 0.83 microF.cm-2, respectively.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cross-Linking Reagents
  • Electrochemistry
  • Gold
  • Lipid Bilayers / chemistry*
  • Liposomes / chemistry
  • Methods
  • Microscopy, Electron, Scanning
  • Phosphatidylcholines
  • Spectrum Analysis
  • Surface Properties

Substances

  • Cross-Linking Reagents
  • Lipid Bilayers
  • Liposomes
  • Phosphatidylcholines
  • Gold