A process for creating a two dimensional spacial distribution pattern of ferent thiolate molecules on a substrate by illuminating a surface of a self-assembled monolayer of a first thiolate compound in the presence of oxygen with high frequency electromagnetic radiation distributed according to a desired...http://www.google.de/patents/US5514501?utm_source=gb-gplus-sharePatent US5514501 - Process for UV-photopatterning of thiolate monolayers self-assembled on gold, silver and other substrates