AVS 49th International Symposium
    Applied Surface Science Thursday Sessions
       Session AS-ThM

Paper AS-ThM3
Arrays of Chemomechanically Patterned Patches of Homogeneous and Mixed Monolayers of 1-Alkenes and Alcohols on Single Silicon Surfaces

Thursday, November 7, 2002, 9:00 am, Room C-106

Session: Practical Surface Science I
Presenter: T.L. Niederhauser, Brigham Young University
Authors: T.L. Niederhauser, Brigham Young University
Y.-Y. Lua, Brigham Young University
G. Jiang, Brigham Young University
S.D. Davis, Brigham Young University
R. Matheson, Brigham Young University
D.A. Hess, Charles Evans & Associates
I.A. Mowat, Charles Evans & Associates
M.R. Linford, Brigham Young University
Correspondent: Click to Email
We have demonstrated a facile, chemomechanical method of simultaneously functionalizing and patterning silicon with single organic monolayers by scribing it while it is wet with 1-alkenes,@footnote 1@ 1-alkynes,@super 1@ and 1-haloalkanes.@footnote 2@ This method can be used to create different monolayer coatings in distinct and precisely controlled regions on an individual surface. Like microcontact printing, this technique allows multiple, patterned, surface features to be prepared with ease. To create these arrays a Si surface is 1) wet with a reactive compound, 2) scribed in a specific region with a computer-controlled diamond-tipped rod, 3) rinsed with a solvent, and 4) dried. Without moving the Si surface from its original position, this process is then repeated to create monolayer coatings in regions distinct from the first. With this technique we have prepared arrays of functionalized, scribed regions on single Si surfaces of a) the homologous series of 1-alkenes from 1-pentene to 1-octadecene, b) a series of alcohols and, c) a series of mixed monolayers on scribed Si from two 1-alkenes or from a 1-alkene and an alcohol. The preparations were performed in the air without any special treatment or degassing of chemicals. The ability to create surfaces with different monolayer coatings in precisely controlled regions should prove technologically valuable, for example, in creating functionalized surfaces to perform multiple bioassays. @FootnoteText@ @footnote 1@T. L. Niederhauser, G. Jiang, Y.-Y. Lua, M. J. Dorff, A. T. Woolley, M. C. Asplund, D. A. Berges, M. R. Linford, Langmuir 2001, 19, 5889-5900.@footnote 2@T. L. Niederhauser, Y.-Y. Lua, Y. Sun, G. Jiang, G. S. Strossman, P. Pianetta, M. R. Linford, Chem.Mater. 2002, 14, 27-29. .