‘Clicking’ on the nanoscale: 1,3-dipolar cycloaddition of terminal acetylenes on azide functionalized, nanometric surface templates with nanometer resolution

C. Haensch, S. Höppener, U.S. Schubert

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)

Abstract

Electro-oxidative lithography is used as a tool to create chemical nanostructures on an n-octadecyltrichlorosilane (OTS) monolayer self-assembled on silicon. The use of a bromine precursor molecule, which is exclusively assembled on these chemical templates, can be used to further functionalize the nanostructures by the site-selective generation of azide functions and performing the highly effective 1,3-dipolar cycloaddition reaction with acetylene functionalized molecules. The versatility of this reaction scheme provides the potential to integrate a large variety of functional molecules, to tailor the surface properties of the nanostructures or to anchor molecular building blocks or particles in confined, pre-defined surface areas. The results demonstrated in the present study introduce a conceivable route towards the functionalization of chemically active surface templates with high fidelity and reliability. It is demonstrated thatsurface features with a lateral resolution of 50 nm functionalized with propargyl alcohol can be fabricated.
Original languageEnglish
Article number135302
Pages (from-to)135302-1/6
Number of pages6
JournalNanotechnology
Volume20
Issue number13
DOIs
Publication statusPublished - 2009

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