DNA-embedded Au/Ag core-shell nanoparticles.
Here, we synthesized highly stable DNA-embedded Au/Ag core-shell nanoparticles (NPs) by a straightforward silver-staining of DNA-modified Au nanoparticles (AuNPs); unlike conventional DNA-surface modified NPs that present particle stability issues, DNA-embedded core-shell NPs offer an extraordinary stability with nanoscale controllability of silver shell thickness; these DNA-embedded core-shell NPs show excellent biorecognition properties and Ag shell-thickness-based optical properties, distinctively different from those of a mixture of AuNPs and AgNPs or Ag/Au alloy nanoparticles.
Lim
Dong-Kwon
DK
Department of Chemistry, Seoul National University, 599 Gwanak-ro, Gwanak gu, Seoul, South Korea.
Kim
In-Jung
IJ
Nam
Jwa-Min
JM
D004247:DNA / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D012834:Silver / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature
D012834:Silver; D006046:Gold; D004247:DNA