DNA Nanotechnology: Overcoming the Coupling Dilemma in DNA‐Programmable Nanoparticle Assemblies by “Ag+ Soldering” (Small 19/2015)

Publisher: John Wiley & Sons Inc

E-ISSN: 1613-6829|11|19|2221-2221

ISSN: 1613-6810

Source: SMALL, Vol.11, Iss.19, 2015-05, pp. : 2221-2221

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Abstract

Strong interparticle coupling is important to facilitate charge and energy transfer. Despite great successes in DNA nanotechnology, the weak coupling of DNA‐assembled nanoparticles is often overlooked. On page 2247, Z. Deng and co‐workers describe DNA‐programmable Ag+ soldering to address this challenge. Firstly, monovalent (with minimized steric effects) DNA‐conjugated gold nanoparticles are assembled into desired structures (e.g., a dimer), and then Ag+ ions are introduced to solder nanoparticles positioned in close proximity to realize strong plasmon coupling.