Orthogonal functionalization of silicon substrates using self-assembled monolayers

Langmuir. 2010 Jun 1;26(11):8358-65. doi: 10.1021/la9047837.

Abstract

A fabrication process for multifunctional surfaces is designed leading to five different functional moieties (amine, thiol, carboxylic acid, fluoro, and methyl) being present on a single structured surface. The multifunctional surface is created by combining UV-ozone patterning, electro-oxidative lithography, the local deposition of self-assembled monolayers (SAMs), and surface modification schemes. Besides the characterization with conventional surface-sensitive techniques, the nature of the locally functionalized regions is demonstrated by self-assembly of three different probe nanomaterials (Si nanoparticles, Au nanoparticles, and hydroxyl functionalized micelles). A versatile fabrication approach for complex surfaces with addressable functionalities can be created, and it was possible to integrate five different functionalized areas on one substrate.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Electrochemistry
  • Oxidation-Reduction
  • Ozone
  • Silicon / chemistry*
  • Surface Properties
  • Ultraviolet Rays

Substances

  • Ozone
  • Silicon