title: A simple approach to micropatterning and surface modification of poly(dimethylsiloxane).
abstract: Ozone treatment is an efficient economical, alternative method for surface activation of poly(dimethylsiloxane) (PDMS). This is illustrated by the derivatization of a PDMS surface with (3-aminopropyl)triethoxysilane (APTES). The apparent surface concentration of amino groups was found to be ca. 10(-8) mol/cm2 using UV/visible spectroscopy of the product from the reaction of the amino groups and fluorescamine. Potential application for micropatterning of biologically active interfaces was demonstrated by the covalent immobilization of oligonucleotides. A simple process for photolithographic patterning on PDMS surfaces has been developed.
authors.affiliation: National Institute for Nanotechnology, National Research Council of Canada, Edmonton, AB, Canada.
authors.forename: Gerardo A
authors.initials: GA
authors.lastname: Diaz-Quijada
authors.forename: Danial D M
authors.initials: DD
authors.lastname: Wayner