Cation-dependent assembly of hexagonal DNA origami lattices on SiO<sub>2</sub> surfaces

Pothineni, Bhanu Kiran; Grundmeier, Guido; Keller, Adrian

doi:10.1039/d3nr02926c

Nanoscale

2023

DOI: 10.1039/d3nr02926c

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Cation-dependent assembly of hexagonal DNA origami lattices on SiO₂ surfaces

Bhanu Kiran Pothineni

Guido Grundmeier

Adrian Keller

Abstract: DNA origami nanostructures have emerged as functional materials for applications in various areas of science and technology. In particular, the transfer of the DNA origami shape into inorganic materials using...

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2024

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Protein‐Assisted Large‐Scale Assembly and Differential Patterning of DNA Origami Lattices

Gavrilović,

Brüggenthies,

Weck

et al. 2024

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Nanofabrication has experienced a big boost with the invention of DNA origami, enabling the production and assembly of complex nanoscale structures that may be able to unlock fully new functionalities in biology and beyond. The remarkable precision with which these structures can be designed and produced is, however, not yet matched by their assembly dynamics, which can be extremely slow, particularly when attached to biological templates, such as membranes. Here, the rapid and controlled formation of DNA origami lattices on the scale of hundreds of micrometers in as little as 30 minutes is demonstrated, utilizing active patterning by the E.coli Min protein system, thereby yielding a remarkable improvement over conventional passive diffusion‐based assembly methods. Various patterns, including spots, inverse spots, mazes, and meshes can be produced at different scales, tailored through the shape and density of the assembled structures. The differential positioning accomplished by Min‐induced diffusiophoresis even allows the introduction of “pseudo‐colors”, i.e., complex core–shell patterns, by simultaneously patterning different DNA origami species. Beyond the targeted functionalization of biological surfaces, this approach may also be promising for applications in plasmonics, catalysis, and molecular sensing.

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Protein‐Assisted Large‐Scale Assembly and Differential Patterning of DNA Origami Lattices

Gavrilović,

Brüggenthies,

Weck

et al. 2024

Small

View full text Add to dashboard Cite

show abstract

Controlling Nanoparticle Distance by On‐Surface DNA‐Origami Folding

Liu,

Wang,

Guckel

et al. 2024

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DNA origami is a flexible platform for the precise organization of nano‐objects, enabling numerous applications from biomedicine to nano‐photonics. Its huge potential stems from its high flexibility that allows customized structures to meet specific requirements. The ability to generate diverse final structures from a common base by folding significantly enhances design variety and is regularly occurring in liquid. This study describes a novel approach that combines top‐down lithography with bottom‐up DNA origami techniques to control folding of the DNA origami with the adsorption on pre‐patterned surfaces. Using this approach, tunable plasmonic dimer nano‐arrays are fabricated on a silicon surface. This involves employing electron beam lithography to create adsorption sites on the surface and utilizing self‐organized adsorption of DNA origami functionalized with two gold nanoparticles (AuNPs). The desired folding of the DNA origami helices can be controlled by the size and shape of the adsorption sites. This approach can for example be used to tune the center‐to‐center distance of the AuNPs dimers on the origami template. To demonstrate this technique's efficiency, the Raman signal of dye molecules (carboxy tetramethylrhodamine, TAMRA) coated on the AuNPs surface are investigated. These findings highlight the potential of tunable DNA origami‐based plasmonic nanostructures for many applications.

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Cation-dependent assembly of hexagonal DNA origami lattices on SiO₂ surfaces

Abstract: DNA origami nanostructures have emerged as functional materials for applications in various areas of science and technology. In particular, the transfer of the DNA origami shape into inorganic materials using...

Cited by 2 publications

References 53 publications

Protein‐Assisted Large‐Scale Assembly and Differential Patterning of DNA Origami Lattices

Protein‐Assisted Large‐Scale Assembly and Differential Patterning of DNA Origami Lattices

Controlling Nanoparticle Distance by On‐Surface DNA‐Origami Folding

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Cation-dependent assembly of hexagonal DNA origami lattices on SiO2 surfaces

Abstract: DNA origami nanostructures have emerged as functional materials for applications in various areas of science and technology. In particular, the transfer of the DNA origami shape into inorganic materials using...

Cited by 2 publications

References 53 publications

Protein‐Assisted Large‐Scale Assembly and Differential Patterning of DNA Origami Lattices

Protein‐Assisted Large‐Scale Assembly and Differential Patterning of DNA Origami Lattices

Controlling Nanoparticle Distance by On‐Surface DNA‐Origami Folding

Contact Info

Product

Resources

About

Cation-dependent assembly of hexagonal DNA origami lattices on SiO₂ surfaces