Two-dimensional nanoparticle arrays show the organizational power of robust DNA motifs.
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.
Zheng
Jiwen
J
Department of Chemistry, New York University, New York 10003, USA.
Constantinou
Pamela E
PE
Micheel
Christine
C
Alivisatos
A Paul
AP
Kiehl
Richard A
RA
Seeman
Nadrian C
NC
D004247:DNA / Q000737:chemistry*; D006046:Gold / Q000737:chemistry; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures; D009690:Nucleic Acid Conformation
D006046:Gold; D004247:DNA