Casting of Gold Nanoparticles with High Aspect Ratios inside DNA Molds | Zendy

Ye Jingjing | Zendy; Weichelt Richard | Zendy; Kemper Ulrich | Zendy; Gupta Vaibhav | Zendy; König Tobias A. F. | Zendy; Eychmüller Alexander | Zendy; Seidel Ralf | Zendy

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Casting of Gold Nanoparticles with High Aspect Ratios inside DNA Molds

Author(s) -

Ye Jingjing,

Weichelt Richard,

Kemper Ulrich,

Gupta Vaibhav,

König Tobias A. F.,

Eychmüller Alexander,

Seidel Ralf

Publication year - 2020

Publication title -

small

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.785

H-Index - 236

eISSN - 1613-6829

pISSN - 1613-6810

DOI - 10.1002/smll.202003662

Subject(s) - colloidal gold , nanotechnology , nanostructure , materials science , nanomaterials , dna , nanoparticle , casting , chemistry , metallurgy , biochemistry

DNA nanostructures provide a powerful platform for the programmable assembly of nanomaterials. Here this approach is extended to synthesize rod‐like gold nanoparticles in a full DNA controlled manner. The approach is based on DNA molds containing elongated cavities. Gold is deposited inside the molds using a seeded‐growth procedure. By carefully exploring the growth parameters it is shown that gold nanostructures with aspect ratios of up to 7 can be grown from single seeds. The highly anisotropic growth is in this case controlled only by the rather soft and porous DNA walls. The optimized seeded growth procedure provides a robust and simple routine to achieve continuous gold nanostructures using DNA templating.

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