Journal
CHEMICAL COMMUNICATIONS
Volume -, Issue 42, Pages 5312-5314Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b810195g
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Funding
- through the Korea Science and Engineering Foundation from Ministry of Education, Science and Technology [FPR08-A2-150, 2008-02890]
- Seoul RBD Program [11001, CR070027]
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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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