DNA-embedded Au/Ag core-shell nanoparticles |
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| Authors: | Lim Dong-Kwon Kim In-Jung Nam Jwa-Min |
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| Institution: | Department of Chemistry, Seoul National University, 599 Gwanak-ro, Gwanak gu, Seoul, South Korea. |
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| Abstract: | 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. |
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