DNA-controlled assembly of a NaTl lattice structure from gold nanoparticles and protein nanoparticles.
The formation of diamond structures from tailorable building blocks is an important goal in colloidal crystallization because the non-compact diamond lattice is an essential component of photonic crystals for the visible-light range. However, designing nanoparticle systems that self-assemble into non-compact structures has proved difficult. Although several methods have been proposed, single-component nanoparticle assembly of a diamond structure has not been reported. Binary systems, in which at least one component is arranged in a diamond lattice, provide alternatives, but control of interparticle interactions is critical to this approach. DNA has been used for this purpose in a number of systems. Here we show the creation of a non-compact lattice by DNA-programmed crystallization using surface-modified Qβ phage capsid particles and gold nanoparticles, engineered to have similar effective radii. When combined with the proper connecting oligonucleotides, these components form NaTl-type colloidal crystalline structures containing interpenetrating organic and inorganic diamond lattices, as determined by small-angle X-ray scattering. DNA control of assembly is therefore shown to be compatible with particles possessing very different properties, as long as they are amenable to surface modification.
Cigler
Petr
P
Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, USA.
Lytton-Jean
Abigail K R
AK
Anderson
Daniel G
DG
Finn
M G
MG
Park
Sung Yong
SY
D001483:Base Sequence; D003102:Colloids; D003460:Crystallization; D004247:DNA / Q000737:chemistry* / Q000235:genetics; D004867:Equipment Design; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008958:Models, Molecular; D036103:Nanotechnology; D053838:Scattering, Small Angle; D012964:Sodium / Q000737:chemistry*; D013793:Thallium / Q000737:chemistry*; D014771:Virion / Q000737:chemistry / Q000648:ultrastructure; D014961:X-Ray Diffraction
D003102:Colloids; D006046:Gold; D004247:DNA; D012964:Sodium; D013793:Thallium