la700649w_si_001.doc (1.15 MB)
Disubstituted Polyacetylene Brushes Grown via Surface-Directed Tungsten-Catalyzed Polymerization
journal contribution
posted on 2007-07-31, 00:00 authored by Sarav B. Jhaveri, Kenneth R. CarterDisubstituted polyacetylene brushes were grown from modified silicon and quartz surfaces using a transition
metal-catalyzed polymerization technique employing tungsten hexachloride/tetraphenyl tin (WCl6/Ph4Sn). The substrate
surfaces were initially functionalized with terminal alkyne functional groups by using an alkyne-functionalized silane,
O-(propagyloxy)-N-(triethoxysilylpropyl) urethane, as a surface coupling agent. Surface polymerization of 5-decyne
under microwave irradiation at 150 °C for 30 min was performed on the functional surfaces to produce surfaces
consisting of grafted poly(1,2-dibutylacetylene) brushes. The alkyne-functionalized and polymer-coated surfaces were
characterized using surface contact angle measurements, film thickness measurements, atomic force microscopy, and
X-ray photoelectron spectroscopy, and fluorescence spectrometer measurements were performed to analyze the surfaces
at each step of the modification process. This simple technique demonstrates a novel way of synthesizing a poly(1,2-dibutylacetylene) brush layer on silicon substrate, and it has future potential in the fabrication of selectively
functionalized surfaces on the nanoscale via this new synthetic approach.
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microwave irradiationquartz surfacessubstrate surfacesDisubstituted Polyacetylene Brushes Grownfunctionalized surfacesfilm thickness measurementsfluorescence spectrometer measurementsSurface polymerizationforce microscopysurface contact angle measurements30 minmodification processnovel waysilicon substrateterminal alkyne
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