Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 25, Issue 38, Pages 9012-9016Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201902148
Keywords
DNA origami; metallization; nanoelectronics; nanorods; self-assembly
Categories
Funding
- Deutsche Forschungsgemeinschaft within the Cluster of Excellence Center for Advancing Electronics Dresden (cfaed/TU Dresden)
- [SE 1646/8-1]
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DNA nanostructures provide a powerful platform for the programmable assembly of nanomaterials. Here, this approach is extended to semiconductor nanorods that possess interesting electrical properties and could be utilized for the bottom-up fabrication of nanoelectronic building blocks. The assembly scheme is based on an efficient DNA functionalization of the nanorods. A complete coverage of the rod surface with DNA ensures a high colloidal stability while maintaining the rod size and shape. It furthermore supports the assembly of the nanorods at defined docking positions of a DNA origami platform with binding efficiencies of up to 90 % as well as the formation of nanorod dimers with defined relative orientations. By incorporating orthogonal binding sites for gold nanoparticles, defined metal-semiconductor heterostructures can be fabricated. Subsequent application of a seeded growth procedure onto the gold nanoparticles (AuNPs) allows for to establish a direct metal-semiconductor interface as a crucial basis for the integration of semiconductors in self-assembled nanoelectronic devices.
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