Encoded and enzyme-activated nanolithography of gold and magnetic nanoparticles on silicon

Bernhard Basnar; Jianping Xu; Di Li; Itamar Willner

doi:10.1021/la063185h

Encoded and enzyme-activated nanolithography of gold and magnetic nanoparticles on silicon

Bernhard Basnar, Jianping Xu, Di Li, Itamar Willner^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

A C₁₈ monolayer-functionalized Si surface is electrochemically patterned to yield a carboxylic acid-terminated pattern. Tyramine is covalently linked to the pattern to yield an encoded nanostructure for the enzyme tyrosinase. The biocatalytic oxidation of the tyramine residues yields catechol moieties that control the assembly of boronic acid-functionalized Au nanoparticles (NPs) or magnetic NPs. The different NPs are linked to the patterns by the formation of complexes between the boronic acid residues or Fe³⁺ ions and the catechol ligands.

Original language	English
Pages (from-to)	2293-2296
Number of pages	4
Journal	Langmuir
Volume	23
Issue number	5
DOIs	https://doi.org/10.1021/la063185h
State	Published - 27 Feb 2007

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Encoded and enzyme-activated nanolithography of gold and magnetic nanoparticles on silicon

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