DNA Brush-Directed Vertical Alignment of Extensive
Gold Nanorod Arrays with Controlled Density
Satoshi Nakamura
Hideyuki Mitomo
Miho Aizawa
Takeharu Tani
Yasutaka Matsuo
Kenichi Niikura
Andrew Pike
Masayuki Naya
Atsushi Shishido
Kuniharu Ijiro
10.1021/acsomega.7b00303.s001
https://acs.figshare.com/articles/journal_contribution/DNA_Brush-Directed_Vertical_Alignment_of_Extensive_Gold_Nanorod_Arrays_with_Controlled_Density/5026583
Control over the orientation of metal
nanorods is important for
both fundamental and applied research. We show that gold nanorods
(GNRs) can be aligned in a single direction by adsorbing positively
charged GNRs onto a double-strand DNA-grafted substrate through electrostatic
interaction. The ordered structure can be optimized by controlling
the density of the positive charges on the surface of the GNRs. We
found, in agreement with the results of theoretical simulation, that
the resultant structure exhibits plasmonic properties that are dependent
on the GNR orientation relative to the direction of an oscillating
electric field. Our approach provides new insights into the polymer-assisted
self-assembly of rod-shaped nanoparticles utilizing electrostatic
interactions.
2017-05-19 18:36:03
double-strand DNA-grafted substrate
Controlled Density Control
DNA Brush-Directed Vertical Alignment
gold nanorods
Extensive Gold Nanorod Arrays
structure exhibits plasmonic properties
rod-shaped nanoparticles
GNR orientation
metal nanorods
polymer-assisted self-assembly
interaction