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Open AccessArticle

Polymorphic Ring-Shaped Molecular Clusters Made of Shape-Variable Building Blocks

1
Department of Bioengineering and Robotics, Tohoku University, Sendai 980-8579, Japan
2
Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY 14853, USA
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Author to whom correspondence should be addressed.
Academic Editor: Stephen Ralph
Nanomaterials 2015, 5(1), 208-217; https://doi.org/10.3390/nano5010208
Received: 1 December 2014 / Revised: 26 January 2015 / Accepted: 3 February 2015 / Published: 16 February 2015
(This article belongs to the Special Issue Frontiers in Nucleic Acid Nanotechnology)
Self-assembling molecular building blocks able to dynamically change their shapes, is a concept that would offer a route to reconfigurable systems. Although simulation studies predict novel properties useful for applications in diverse fields, such kinds of building blocks, have not been implemented thus far with molecules. Here, we report shape-variable building blocks fabricated by DNA self-assembly. Blocks are movable enough to undergo shape transitions along geometrical ranges. Blocks connect to each other and assemble into polymorphic ring-shaped clusters via the stacking of DNA blunt-ends. Reconfiguration of the polymorphic clusters is achieved by the surface diffusion on mica substrate in response to a monovalent salt concentration. This work could inspire novel reconfigurable self-assembling systems for applications in molecular robotics. View Full-Text
Keywords: DNA nanostructure; DNA origami; DNA stacking; reconfiguration; substrate DNA nanostructure; DNA origami; DNA stacking; reconfiguration; substrate
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Cervantes-Salguero, K.; Hamada, S.; Nomura, S.-I.M.; Murata, S. Polymorphic Ring-Shaped Molecular Clusters Made of Shape-Variable Building Blocks. Nanomaterials 2015, 5, 208-217.

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