Submerged Microcontact Printing (S mu CP):An Unconventional Printing Technique of Thiols Using High Aspect Ratio,Elastomeric Stamps

摘要

A technique for microcontact printing of thiols in liquid media is presented.Elastomeric poly(dimethyl siloxane) stamps are used to pattern gold surfaces with thiol-based self-assembled monolayers.The liquid (water in this case) has been used as an incompressible support and,advantageously,also acts as a medium in which alkylthiol ink molecules are poorly miscible.Consequently,we have been able to produce patterned thiol monolayers using stamps with aspect ratios unsuitable for conventional microcontact printing (i.e.,15:1) and present evidence to suggest that it is possible to use stamps with aspect ratios of up to 100:1.