Sulfonic acid-functionalized golf nanoparticles: A colloid-bound catalyst for soft lithographic application on self-assembled monolayers

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Li, Xue-Mei and Paraschiv, Vasile and Huskens, Jurriaan and Reinhoudt, David N. (2003) Sulfonic acid-functionalized golf nanoparticles: A colloid-bound catalyst for soft lithographic application on self-assembled monolayers. Journal of the American Chemical Society, 125 (14). pp. 4279-4284. ISSN 0002-7863

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Abstract:In this report, we present a new lithographic approach to prepare patterned surfaces. Self-assembled monolayers (SAMs) of the acid-labile trimethylsilyl ether (TMS-OC11H22S)2 (TMS adsorbate) was formed on gold. 5-Mercapto-2-benzimidazole sulfonic acid sodium salt (MBS-Na+) was used as a ligand for gold nanoparticles. These monolayer-protected gold colloids (MPCs) were transformed into the catalytically active H+-form by ion exchange. This colloid-bound catalyst hydrolyzed the TMS adsorbate (TMS-OC11H22S)2 both in solution and when self-assembled on gold surfaces. Microcontact printing of the active colloid-bound catalyst on the preformed TMS SAM led to the deposition of the colloid onto the SAMs. After the catalyst nanoparticles were rinsed off, a patterned surface was created as shown by AFM.
Item Type:Article
Copyright:© 2003 American Chemical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/40877
Official URL:http://dx.doi.org/10.1021/ja0271431
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