Issue 65, 2015

Facile, fine post-tuning of the longitudinal absorption wavelengths of pre-synthesized gold nanorods by introducing sulfide additives

Abstract

Because the specific surface plasmon resonance (SPR) wavelength of gold nanorods (GNRs) is required in most photothermal bio-applications to enhance therapeutic efficacy, the precise expectation of the SPR wavelength of GNRs in the synthesis is required. Here, we present a facile, fine post-tuning of the longitudinal absorption spectrum of pre-synthesized gold nanorods by introducing controlled amounts of sulfide additives. The longitudinal SPR wavelength was controlled to a longer wavelength (red-shifted) by increasing the concentration of sulfide. In addition, the SPR wavelength determined after sulfide treatment was not shifted and was fixed for a long period of time. This allows a powerful second chance to adjust the SPR wavelength of given GNRs by a simple post-treatment, which can circumvent the risk of experimental failure in a GNR synthesis with a specific wavelength. This method may be beneficial in the efficient preparation of GNRs for various applications requiring specific SPR wavelengths with high stability.

Graphical abstract: Facile, fine post-tuning of the longitudinal absorption wavelengths of pre-synthesized gold nanorods by introducing sulfide additives

Supplementary files

Article information

Article type
Communication
Submitted
03 Apr 2015
Accepted
08 Jun 2015
First published
08 Jun 2015

RSC Adv., 2015,5, 52459-52465

Facile, fine post-tuning of the longitudinal absorption wavelengths of pre-synthesized gold nanorods by introducing sulfide additives

Y. Park and J. Kim, RSC Adv., 2015, 5, 52459 DOI: 10.1039/C5RA05979H

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