Preparation and optical properties of worm-like gold nanorods

Journal of Colloid and Interface Science
Haowen HuangZhong Chen

Abstract

A type of worm-like nanorods was successfully synthesized through conventional gold nanorods reacting with Na2S2O3 or Na2S. The generated worm-like gold nanorods comprise shrunk nanorod cores and enwrapped shells. Therefore, a gold-gold sulfide core-shell structure is formed in the process, distinguishing from their original counterparts. The formation of the gold chalcogenide layers was confirmed by transmission electron microscopy and X-ray photoelectron spectroscopy. Experimental results showed that the thickness of the gold chalcogenide layers is controllable. Since the increase of shell thickness and decrease of gold nanorod core take place simultaneously, it allows one to tune the plasmon resonance of nanorods. Proper adjustment of reaction time, temperature, additives and other experimental conditions will produce worm-like gold nanorods demonstrating desired longitudinal plasmon wavelength (LPW) with narrow size distributions, only limited by properties of starting original gold nanorods. The approach presented herein is capable of selectively changing LPW of the gold nanorods. Additionally, the formed worm-like nanorods possess higher sensitive property in localized surface plasmon resonance than the original nanorods....Continue Reading

References

Jul 21, 2006·The Journal of Physical Chemistry. B·A BrioudeM P Pileni
Jul 21, 2006·The Journal of Physical Chemistry. B·Jessica Rodríguez-FernándezLuis M Liz-Marzán
Nov 10, 2006·The Journal of Physical Chemistry. B·Amneet GulatiJason H Hafner
Feb 7, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Terry B HuffAlexander Wei

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Citations

May 6, 2014·International Journal of Pharmaceutics·A Soltan MonemNoha Mohamed
Oct 2, 2012·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Lin TangGuoli Shen
Apr 14, 2009·Biosensors & Bioelectronics·Haowen HuangYi Chen
May 4, 2017·The Journal of the Acoustical Society of America·Guillaume LajoinieMichel Versluis

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