DNA-mediated site-specific deposition of gold nanoparticles on silicon wafers.
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.
Institute of Organic Chemistry and Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), 76131, Karlsruhe, Germany. katharina@rrg.uka.de
Katharina J C
KJ
Heimann
Clemens
C
Richert
D001483:Base Sequence; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D009841:Oligonucleotides / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*
D009841:Oligonucleotides; D006046:Gold; D012822:Silicon Dioxide