DNA Brush-Directed Vertical Alignment of Extensive
Gold Nanorod Arrays with Controlled Density
Posted on 2017-05-19 - 18:36
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.
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Nakamura, Satoshi; Mitomo, Hideyuki; Aizawa, Miho; Tani, Takeharu; Matsuo, Yasutaka; Niikura, Kenichi; et al. (2017). DNA Brush-Directed Vertical Alignment of Extensive
Gold Nanorod Arrays with Controlled Density. ACS Publications. Collection. https://doi.org/10.1021/acsomega.7b00303
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AUTHORS (10)
SN
Satoshi Nakamura
HM
Hideyuki Mitomo
MA
Miho Aizawa
TT
Takeharu Tani
YM
Yasutaka Matsuo
KN
Kenichi Niikura
AP
Andrew Pike
MN
Masayuki Naya
AS
Atsushi Shishido
KI
Kuniharu Ijiro