期刊
ADVANCED FUNCTIONAL MATERIALS
卷 16, 期 8, 页码 1037-1042出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.200500702
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In this work a new variation of microcontact printing is described, which is used to transfer chemical patterns onto different substrates. The approach is based on the use of conventional elastomeric stamps modified with polyelectrolyte brushes. It is demonstrated that, by using stamps modified with brushes acting as preconcentrating/sorbent nanolayers, it is possible to control the uptake of aqueous inks containing ionic species. This controlled uptake can be easily used for site-selective delivery of the loaded species by means of soft lithography. The potential of this approach is demonstrated by creating patterned counterion domains in a flat polyelectrolyte brush and by promoting a site-selective metallization through galvanic displacement reactions with reactive species.
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