Web Release Date: November 23,
Structured Polymer Grafts on Diamond
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Contribution from the Wacker-Lehrstuhl für Makromolekulare Chemie, Department Chemie, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany, Walter Schottky Institut, Technische Universität München, Am Coulombwall 3, 85747 Garching, Germany, Materials Science Department, Argonne National Laboratory, Argonne, Illinois 60439, and Physics Department E20, Technische Universität München, James-Franck-Strasse, 85748, Garching, Germany
Received July 31, 2007
Abstract:
In this work, a facile method for the preparation of structured and functional polymer grafts on diamond surfaces is described. Uniform poly(styrene) (PS) grafts with a thickness of ~110 nm were created directly onto oxidized ultrananocrystalline diamond (UNCD) surfaces by the self-initiated photografting and photopolymerization of bulk styrene with UV irradiation. The stable covalent bonding of the PS grafts allows polymer analogue reactions with drastic reaction conditions without noticeable detachment of the polymer coating. Thus, various functionalities, such as nitro, sulfonic, and aminomethyl groups have been successfully incorporated to the polymer grafts. Furthermore, the reactivity contrast between hydrogenated and oxidized UNCD surfaces allows for the preparation of structured polymer grafts. Finally, we have demonstrated the good reactivity and accessibility of the incorporated pendant functional groups.
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