Dimerization and oligomerization of DNA-assembled building blocks for controlled multi-motion in high-order architectures

Ling Xin, Xiaoyang Duan and Na Liu ()
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Ling Xin: University of Stuttgart
Xiaoyang Duan: Max Planck Institute for Solid State Research
Na Liu: University of Stuttgart

Nature Communications, 2021, vol. 12, issue 1, 1-9

Abstract: Abstract In living organisms, proteins are organized prevalently through a self-association mechanism to form dimers and oligomers, which often confer new functions at the intermolecular interfaces. Despite the progress on DNA-assembled artificial systems, endeavors have been largely paid to achieve monomeric nanostructures that mimic motor proteins for a single type of motion. Here, we demonstrate a DNA-assembled building block with rotary and walking modules, which can introduce new motion through dimerization and oligomerization. The building block is a chiral system, comprising two interacting gold nanorods to perform rotation and walking, respectively. Through dimerization, two building blocks can form a dimer to yield coordinated sliding. Further oligomerization leads to higher-order structures, containing alternating rotation and sliding dimer interfaces to impose structural twisting. Our hierarchical assembly scheme offers a design blueprint to construct DNA-assembled advanced architectures with high degrees of freedom to tailor the optical responses and regulate multi-motion on the nanoscale.

Date: 2021
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DOI: 10.1038/s41467-021-23532-y

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