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Welded Gold Nanoparticle Assemblies Defined Plasmonic Coupling
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DOI：10.1021/acs.nanolett.4c01887.png)
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Nanoparticle assemblies with interparticle ohmic contacts are crucial for nanodevice fabrication. Despite tremendous progress in DNA-programmable nanoparticle assemblies, seamlessly welding discrete components into welded continuous three-dimensional (3D) configurations remains challenging. Here, we introduce a single-stranded DNA-encoded strategy to customize welded metal nanostructures with tunable morphologies and plasmonic properties. We demonstrate the precise welding of gold nanoparticle assemblies into continuous metal nanostructures with interparticle ohmic contacts through chemical welding in solution. We find that the welded gold nanoparticle assemblies show a consistent morphology with welded efficiency over 90%, such as the rod-like, triangular, and tetrahedral metal nanostructures. Next, we show the versatility of this strategy by welding gold nanoparticle assemblies of varied sizes and shapes. Furthermore, the experiment and simulation show that the welded gold nanoparticle assemblies exhibit defined plasmonic coupling. This single-stranded DNA encoded welding system may provide a new route for accurately building functional plasmonic nanomaterials and devices.
Keyword:
single-stranded DNA encoders
DNA nanotechnology
gold nanoparticle assemblies
plasmonic
期刊
IF:
9.1
论文数:
2.7W
被引数:
16.5W
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引用论文
DNA Origami Guided Self-Assembly of Plasmonic Polymers with Robust Long-Range Plasmonic ResonanceDNA折纸引导具有强大的长距离等离子体共振的等离子体聚合物的自组装.png)
NANO LETTERS
NANO LETTERSIF9.1
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