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Published March 6, 2001 | public
Journal Article

Formation of Covalently Attached Polymer Overlayers on Si(111) Surfaces Using Ring-Opening Metathesis Polymerization Methods


We describe a method for growing uniform, covalently attached polymer onto crystalline Si(111) surfaces. H-Terminated Si was first chlorinated, and the surface-bound chlorine was then replaced by a terminal olefin using a Grignard reaction. A ruthenium ring-opening metathesis polymerization catalyst was then crossed onto the terminal olefin, and the resulting surface was subsequently immersed into a solution of monomer to produce the desired surface-attached polymer. The method provides a direct linkage between the polymer and the Si without the presence of an electrically defective oxide layer. Growth of the polymeric layer could be controlled by varying the concentration of monomer in solution, and polynorbornene films between 0.9 and 5500 nm in thickness were produced through the use of 0.01−2.44 M solutions of norbornene.

Additional Information

© 2001 American Chemical Society. Received 11 September 2000. Published online 2 February 2001. Published in print 1 March 2001. This work was supported by the National Science Foundation, CHE-9974562 (N.S.L.), and by the Air Force Office of Scientific Research, Grant F49620-96-1-0035 (R.H.G.). O.A.S. gratefully acknowledges the National Science Foundation for a predoctoral fellowship.

Additional details

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