Fabrication of self-assembled monolayers using CO2

摘要

A self-assembled monolayer (SAM) is fabricated using either a semi-fluorinated sulphur containing compound or a semi-fluorinated silane derivative and compressed carbon dioxide (CO2) as the solvent medium. The temperature and/or pressure of the compressed CO2 may be varied during the fabrication process to improve the molecular packing density of the monolayer. A co-solvent may be used in conjunction with the compressed CO2. The substrate may be a metallic substance. Also claimed are inkjet heads, electronic, optical or optoelectronic devices, e.g. a thin film transistor, an organic semiconductor device, or a light emitting diode, comprising a self-assembled monolayer constructed by the process.