‘Clicking’ on the nanoscale: 1,3-dipolar cycloaddition of terminal acetylenes on azide functionalized, nanometric surface templates with nanometer resolution
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Haensch, Claudia; Höppener, Stephanie; Schubert, Ulrich S.
- 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 that
surface features with a lateral resolution of 50 nm functionalized with propargyl alcohol can be
fabricated.
- Year:
- 2009
- Type of Publication:
- Article
- Journal:
- Nanotechnology
- Volume:
- 20
- Pages:
- 135302/1 - 135302/6