Hydroquinone based synthesis of gold nanorods

Silvia Picciolini, Dora Mehn, Isaac Ojea-Jiménez, Furio Gramatica, Carlo Morasso

Research output: Contribution to journalArticle

Abstract

Gold nanorods are an important kind of nanoparticles characterized by peculiar plasmonic properties. Despite their widespread use in nanotechnology, the synthetic methods for the preparation of gold nanorods are still not fully optimized. In this paper we describe a new, highly efficient, two-step protocol based on the use of hydroquinone as a mild reducing agent. Our approach allows the preparation of nanorods with a good control of size and aspect ratio (AR) simply by varying the amount of hexadecyl trimethylammonium bromide (CTAB) and silver ions (Ag+) present in the "growth solution". By using this method, it is possible to markedly reduce the amount of CTAB, an expensive and cytotoxic reagent, necessary to obtain the elongated shape. Gold nanorods with an aspect ratio of about 3 can be obtained in the presence of just 50 mM of CTAB (versus 100 mM used in the standard protocol based on the use of ascorbic acid), while shorter gold nanorods are obtained using a concentration as low as 10 mM.

Original languageEnglish
Article numbere54319
JournalJournal of Visualized Experiments
Volume2016
Issue number114
DOIs
Publication statusPublished - Aug 10 2016

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Keywords

  • Anisotropic nanoparticl
  • Chemistry
  • Colloids
  • CTAB
  • Gold
  • Hydroquinone
  • Issue 114
  • Nanoparticles
  • Nanorods
  • Plasmonics

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Chemical Engineering(all)
  • Immunology and Microbiology(all)
  • Neuroscience(all)

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