title: Two-dimensional nanoparticle arrays show the organizational power of robust DNA motifs.
abstract: The bottom-up spatial organization of potential nanoelectronic components is a key intermediate step in the development of molecular electronics. We describe robust three-space-spanning DNA motifs that are used to organize nanoparticles in two dimensions. One strand of the motif ends in a gold nanoparticle; only one DNA strand is attached to the particle. By using two of the directions of the motif to produce a two-dimensional crystalline array, one direction is free to bind gold nanoparticles. Identical motifs, tailed in different sticky ends, enable the two-dimensional periodic ordering of 5 and 10 nm diameter gold nanoparticles.
authors.affiliation: Department of Chemistry, New York University, New York 10003, USA.
authors.forename: Jiwen
authors.initials: J
authors.lastname: Zheng
authors.forename: Pamela E
authors.initials: PE
authors.lastname: Constantinou
authors.forename: Christine
authors.initials: C
authors.lastname: Micheel
authors.forename: A Paul
authors.initials: AP
authors.lastname: Alivisatos
authors.forename: Richard A
authors.initials: RA
authors.lastname: Kiehl
authors.forename: Nadrian C
authors.initials: NC
authors.lastname: Seeman
mesh_terms: D004247:DNA / Q000737:chemistry*; D006046:Gold / Q000737:chemistry; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures; D009690:Nucleic Acid Conformation
chemical_list: D006046:Gold; D004247:DNA