Attachment of polybutadienes to hydrogen-terminated silicon and post-derivatization of the adsorbed species.
We report the first attachment of polymers with pendant vinyl groups to hydrogen-terminated silicon(111) (Si(111)-H); 1,2-polybutadiene (M(w) = 3200-3500 g/mol) was attached to Si(111)-H under mild conditions at room temperature with visible light. We also report the partial functionalization, in solution, of 1,2-polybutadiene with various thiols using thiol-ene chemistry and the subsequent attachments of these compounds to Si(111)-H. The partially functionalized or unfunctionalized polybutadienes allow further functionalization at the surface through their unreacted carbon-carbon double bonds. 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).
Wickard
Todd D
TD
Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, USA.
Nelsen
Emily
E
Madaan
Nitesh
N
ten Brummelhuis
Niels
N
Diehl
Christina
C
Schlaad
Helmut
H
Davis
Robert C
RC
Linford
Matthew R
MR