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Published on: June 3, 2019
DNA-mediated site-specific deposition of gold nanoparticles on silicon wafers
Katharina J C Heimann1, Clemens Richert
1Institute of Organic Chemistry and Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), 76131, Karlsruhe, Germany. katharina@rrg.uka.de
Abstract:
We report a method for the site-specific deposition of gold nanoparticles, as programmed by DNA sequences immobilized on the surface of silicon oxide-coated silicon wafers. After optimization of surface chemistries, selectivities of between 8:1 and 118:1 were achieved for the DNA-based sorting of populations of gold nanoparticle of 15 nm and 60 nm diameter from a common suspension via oligonucleotide duplex formation.
