Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2008-07-24
Physics
Condensed Matter
Soft Condensed Matter
v2: 21 pages, 8 figures; revised discussion in Sec. 2, replaced 2 figures, added new references
Scientific paper
10.1103/PhysRevE.79.011404
DNA is an ideal candidate to organize matter on the nanoscale, primarily due to the specificity and complexity of DNA based interactions. Recent advances in this direction include the self-assembly of colloidal crystals using DNA grafted particles. In this article we theoretically study the self-assembly of DNA-caged particles. These nanoblocks combine DNA grafted particles with more complicated purely DNA based constructs. Geometrically the nanoblock is a sphere (DNA grafted particle) inscribed inside a polyhedron (DNA cage). The faces of the DNA cage are open, and the edges are made from double stranded DNA. The cage vertices are modified DNA junctions. We calculate the equilibriuim yield of self-assembled, tetrahedrally caged particles, and discuss their stability with respect to alternative structures. The experimental feasability of the method is discussed. To conclude we indicate the usefulness of DNA-caged particles as nanoblocks in a hierarchical self-assembly strategy.
Licata Nicholas A.
Tkachenko Alexei V.
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