AVS 56th International Symposium & Exhibition
    Surface Science Friday Sessions
       Session SS2-FrM

Paper SS2-FrM4
The First Attachment of Polybutadiene and Functionalized Polybutadiene to Hydrogen-Terminated Silicon, with Post-Derivitization of these Adsorbed Species

Friday, November 13, 2009, 9:20 am, Room N

Session: Semiconductor Surfaces and Interfaces II: Si
Presenter: M.R. Linford, Brigham Young University
Authors: E. Nelsen, Brigham Young University
T. Wickard, Brigham Young University
H. Schlaad, Max Planck Institute of Colloids and Interfaces, Germany
R.C. Davis, Brigham Young University
M.R. Linford, Brigham Young University
Correspondent: Click to Email
We report the first attachment of polymers with pendant vinyl groups to hydrogen-terminated silicon(111) (Si(111)-H) under mild conditions; 1,2-addition polybutadiene (Mw 3200-3500) in solution was attached to Si(111)-H at room temperature with only visible light activation. We also report the partial functionalization, in solution, of 1,2-addition polybutadiene with various thiols using thiol-click chemistry and the subsequent attachments of these compounds to Si(111)-H. The partially functionalized polybutadienes allow further functionalization at the surface through their unreacted carbon-carbon double bonds, as demonstrated with a perfluorinated thiol. We present this as a useful strategy for silicon surface modification. Surfaces were characterized with contact angle goniometry, spectroscopic ellipsometry, X-ray photoelectron spectroscopy (XPS), time-of-flight secondary ion mass spectrometry (ToF-SIMS), and atomic force microscopy (AFM).