Growth of Gold Nanorods on Surfaces

Abstract

The surfactant-assisted seeded growth method was adapted for growth of gold nanorods directly on mica surfaces. Spherical gold seed particles were first linked to the surface and then dipped in a cationic surfactant growth solution. Part of the grown particles were nanorods with a typical length of several hundred nanometers and diameter of 10-20 nm. The probability to grow elongated particles out of a seed on the surface was found to be larger than the comparable solution growth process. Successive dipping in the growth solution was found to increase the length and thickness of the gold nanorods without a significant increase in aspect ratio.

Preparation and Characterization of Gold Nanorods

“…Markovich and co-workers adapted the seed-mediated method in the absence of silver nitrate proposed by Murphy and co-workers ) for the growth of gold nanorods directly on mica surfaces (Taub et al, 2003). The method involves the attachment of the spherical seed nanoparticles to a mica surface, which is then dipped in a C 16 TAB surfactant growth solution.…”

Spectrally-selective gold nanorod coatings for window glass

“…To achieve the former outcome gold seeds have been attached to a surface functionalized with aminopropyltrimethoxysilane (APTMS) before it was introduced into a rod growth solution [16][17][18]. With this strategy, neither aggregation of the seed particles nor Ostwald ripening can occur due to the very limited of diffusion of Au in such geometries.…”

Control of Plasmon Resonance in Coatings of Gold Nanorods

“…In addition, while there have been several reports of coatings produced with rods [5][6][7][8], there is not yet any dominant protocol to achieve this. A factor that has only recently received attention is that the individual plasmon resonances of gold nanorods in colloidal suspension are modified in high density coatings of these particles.…”