Byproduct-Free Synthesis, Characterization, and Reactivity of 1, 2-Diaminosiloxane Monolayers on Silicon/Silicon Dioxide

摘要

The facile self-assembly of monolayers films derived from N-(2- aminoethyl)-2, 2, 4-trimethyl-1-aza-2-silacyclopentane on sili- con/silicon dioxide substrates from the solution phase is reported. This adsorbate reacts with silanols at the surface to produce a covalent siloxane linkage to the substrate via ring- opening and produces no byproduct(s). The resulting diamine surface reacts with maleic anhydride or succinic anhydride to produce the corresponding carboxylic-acid terminated surfaces. The kinetics of these reactions and their products were characterized by contact-angle goniometry, optical ellipsome- try, and X-ray photoelectron spectroscopy.