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Author: König, Tobias A.F. × DDC: 570 × Publisher: Weinheim : Wiley-VCH × WGL Institute: IPF ×

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    Casting of Gold Nanoparticles with High Aspect Ratios inside DNA Molds
    (Weinheim : Wiley-VCH, 2020) Ye, Jingjing; Weichelt, Richard; Kemper, Ulrich; Gupta, Vaibhav; König, Tobias A.F.; Eychmüller, Alexander; Seidel, Ralf
    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.