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journal article·2020-10Open access

Casting of Gold Nanoparticles with High Aspect Ratios inside DNA Molds

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

Small· Volume 16· Issue 39
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Source abstract

Abstract

Abstract 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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Research context

Nanomaterials

OpenAlex topics: Advanced biosensing and bioanalysis techniques · Gold and Silver Nanoparticles Synthesis and Applications · RNA Interference and Gene Delivery

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Molecular Biophysics group Peter Debye Institute for Soft Matter Physics Universität Leipzig Leipzig 04103 Germany

Center for Advancing Electronics Dresden Technische Universität Dresden Dresden 01062 Germany

Physical Chemistry and Center for Advancing Electronics Dresden Technische Universität Dresden Dresden 01062 Germany

Institute for Physical Chemistry and Polymer Physics Leibniz‐Institut für Polymerforschung Dresden e.V., Hohe Str. 6 Dresden 01069 Germany

Funding

Deutsche Forschungsgemeinschaft · Volkswagen Foundation · Helmholtz-Gemeinschaft

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