Chemically patterned flat stamps for microcontact printing

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Sharpe, Ruben B.A. and Burdinski, Dirk and Huskens, Jurriaan and Zandvliet, Harold J.W. and Reinhoudt, David N. and Poelsema, Bene (2005) Chemically patterned flat stamps for microcontact printing. Journal of the American Chemical Society, 127 (29). pp. 10344-10349. ISSN 00027863

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Abstract:Locally oxidized patterns on flat poly(dimethylsiloxane) stamps for microcontact printing were used as a platform for the transfer of a hydrophilic fluorescent ink to a glass substrate. The contrast was found to be limited. These locally oxidized patterns were conversely used as barriers for the transfer of hydrophobic n-octadecanethiol. In this case a good contrast was obtained, but the pattern was found to be susceptible to defects (cracks) in the barrier layer. Local stamp surface oxidation and subsequent modification with 1H,1H,2H,2H-perfluorodecyltrichlorosilane, for use as a barrier in the transfer of n-octadecanethiol, 16-mercaptohexadecanoic acid, and octanethiol, resulted in remarkably good contrast and stable patterns. The improved ink transfer control is ascribed to the reduction of undesired surface spreading and a superior mechanical stability of the stamp pattern. This new approach substantially expands the applicability of microcontact printing and provides a tool for the faithful reproduction of even extremely low filling ratio patterns.
Item Type:Article
Copyright:© 2005 American Chemical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/53009
Official URL:http://dx.doi.org/10.1021/ja052139l
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