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Programmable Cocrystallization of DNA Origami Shapes.

Min Ji1,2, Jiliang Liu3, Lizhi Dai1,2

  • 1College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, 210023, China.

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Researchers used DNA origami to precisely control the assembly of different nanoparticles. This enables the creation of complex 3D structures with tunable optical and mechanical properties.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biotechnology

Background:

  • Designing complex materials requires precise assembly of diverse building blocks.
  • Controlling the cocrystallization of anisotropic nanoparticles with specific modes is challenging due to size, shape, and directional interaction requirements.

Purpose of the Study:

  • To develop a method for programmable cocrystallization of anisotropic nanoparticles using DNA origami.
  • To demonstrate control over assembly modes by programming surface interactions.

Main Methods:

  • Synthesized two types of DNA nano-objects with different symmetries using DNA origami.
  • Precisely programmed heterogeneous functional patches on nano-object surfaces.
  • Encapsulated DNA nano-objects in silica for characterization.

Main Results:

  • Achieved programmable cocrystallization of anisotropic DNA nano-objects along specified modes.
  • Demonstrated control over assembly by modulating surface patch combinations.
  • Confirmed highly ordered DNA crystals using small-angle X-ray scattering and electron microscopy.

Conclusions:

  • DNA origami enables precise control over the assembly of diverse anisotropic nano-objects.
  • This strategy provides a foundation for fabricating customized 3D structures with tailored optical and mechanical properties.