Premium
In Situ Organization of Gold Nanorods on Mixed Self‐Assembled‐Monolayer Substrates
Author(s) -
Zareie M. Hadi,
Xu Xiaoda,
Cortie Michael B.
Publication year - 2007
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200600280
Subject(s) - nanorod , monolayer , nanotechnology , materials science , surface plasmon resonance , self assembly , scanning electron microscope , plasmon , substrate (aquarium) , self assembled monolayer , micrometer , rod , nanoparticle , optoelectronics , optics , composite material , oceanography , physics , alternative medicine , pathology , geology , medicine
Abstract A method is described for assembling gold nanorods, end‐to‐end, into long chains attached on top of a mixed self‐assembled monolayer that has been functionalized with streptavidin. Methods to prepare chains of nanorods in colloidal suspension have been reported by others, but our protocol offers a way to directly form such structures on a substrate. The rods are spaced ≈5 nm apart in the resulting chains, which extend for over a micrometer in length. The assembly and morphology of the nanorod structures were characterized by surface plasmon resonance spectroscopy, as well as by scanning electron microscopy and scanning probe microscopy. Structures of this type could conceivably serve as plasmonic waveguides in future nanodevices.