title: Anisotropic nanoparticle complementarity in DNA-mediated co-crystallization.
abstract: Whether two species will co-crystallize depends on the chemical, physical and structural complementarity of the interacting components. Here, by using DNA as a surface ligand, we selectively co-crystallize mixtures of two different anisotropic nanoparticles and systematically investigate the effects of nanoparticle size and shape complementarity on the resultant crystal symmetry, microstrain, and effective 'DNA bond' length and strength. We then use these results to understand a more complicated system where both size and shape complementarity change, and where one nanoparticle can participate in multiple types of directional interactions. Our findings offer improved control of non-spherical nanoparticles as building blocks for the assembly of sophisticated macroscopic materials, and provide a framework to understand complementarity and directional interactions in DNA-mediated nanoparticle crystallization.
authors.affiliation: 1] Department of Chemistry, Northwestern University, 2145 Sheridan Rd Evanston, Illinois 60208, USA [2] International Institute of Nanotechnology, Northwestern University, 2145 Sheridan Rd Evanston, Illinois 60208, USA.
authors.forename: Matthew N
authors.initials: MN
authors.lastname: O'Brien
authors.affiliation: 1] International Institute of Nanotechnology, Northwestern University, 2145 Sheridan Rd Evanston, Illinois 60208, USA [2] Department of Materials Science and Engineering, Northwestern University, 2220 Campus Dr Evanston, Illinois 60208, USA.
authors.forename: Matthew R
authors.initials: MR
authors.lastname: Jones
authors.affiliation: X-Ray Science Division, Argonne National Laboratory, 9700 S Cass Ave Argonne, Illinois 60439, USA.
authors.forename: Byeongdu
authors.initials: B
authors.lastname: Lee
authors.affiliation: 1] Department of Chemistry, Northwestern University, 2145 Sheridan Rd Evanston, Illinois 60208, USA [2] International Institute of Nanotechnology, Northwestern University, 2145 Sheridan Rd Evanston, Illinois 60208, USA [3] Department of Materials Science and Engineering, Northwestern University, 2220 Campus Dr Evanston, Illinois 60208, USA.
authors.forename: Chad A
authors.initials: CA
authors.lastname: Mirkin
mesh_terms: D016880:Anisotropy; D003460:Crystallization; D018076:DNA, Complementary / Q000737:chemistry* / Q000648:ultrastructure; D046529:Microscopy, Electron, Transmission; D008958:Models, Molecular; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology; D010316:Particle Size; D053838:Scattering, Small Angle; D020349:Surface Plasmon Resonance; D014961:X-Ray Diffraction
chemical_list: D018076:DNA, Complementary