Disubstituted Polyacetylene Brushes Grown via Surface-Directed Tungsten-Catalyzed Polymerization
| Autor: | Sarav B. Jhaveri, Kenneth R. Carter |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
chemistry.chemical_classification
chemistry.chemical_element Surfaces and Interfaces Polymer Tungsten Condensed Matter Physics Silane Contact angle Polyacetylene chemistry.chemical_compound chemistry Polymerization Chemical engineering X-ray photoelectron spectroscopy Electrochemistry Organic chemistry General Materials Science Tungsten hexachloride Spectroscopy |
| Zdroj: | Langmuir. 23:8288-8290 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la700649w |
| Popis: | Disubstituted 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 degrees 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. |
| Databáze: | OpenAIRE |
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