AVS 51st International Symposium
    Surface Science Monday Sessions
       Session SS-MoP

Paper SS-MoP10
Single Step Functionalization of Scribed Silicon with Acid Chlorides and Epoxides

Monday, November 15, 2004, 5:00 pm, Room Exhibit Hall B

Session: Poster Session
Presenter: C.A. Pew, Brigham Young University
Authors: C.A. Pew, Brigham Young University
Y.-Y. Lua, Brigham Young University
W.J.J. Fillmore, Brigham Young University
M.R. Linford, Brigham Young University
Correspondent: Click to Email
A perpetual problem in surface modification and functionalization is that of finding better and more convenient ways for creating reactive functional groups on surfaces. Two reactive functional groups of great importance in surface modification, and in organic chemistry in general, are the epoxide ring and the acid chloride group. Here we report that epoxide- and acid chloride-terminated monolayers on silicon can be prepared in a single step by chemomechanically scribing silicon that is wet with a bifunctional epoxide (1,2,7,8- diepoxyoctane) or an acid chloride (adipoyl chloride). Surface modification takes place in an open laboratory with compounds that have not been degassed. We also describe the amine-reactivity of these monolayers, using X-ray photoelectron spectroscopy, time-of-flight secondary ion mass spectrometry, and wetting to prove surface functionalization. Finally, we show that the amine reactivity in these monolayers can be controlled and improved by making mixed monolayers composed of a shorter-chain monofunctional adsorbate and a longer-chain bifunctional adsorbate.