Overgrowth of gold nanorods by using a binary surfactant mixture

Boris N. Khlebtsov, Vitaly A. Khanadeev, Jian Ye, Gleb B. Sukhorukov, Nikolai G. Khlebtsov

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Seed-mediated surfactant-assisted growth is widely used as the most effective method for gold nanorod (NR) synthesis. Using prepared nanorods as seeds for further overgrowth can increase the dimensional tunability of the final particles. However, overgrowth in usual cetyltrimethylammonium bromide (CTAB) surfactant solutions leads to poor control of the final particle shape and size. In this work, we report an improved strategy to demonstrate the controllable overgrowth of gold NRs in the binary surfactant mixture sodium oleate (NaOL) + CTAB. This approach overcomes the difficulty of growing NR suspensions with small amounts of impurities. By controlling the total amount of added NR seeds, it is possible to tune the average length, diameter, and plasmon resonances of overgrown particles in a wide range. Together with the original NaOL + CTAB method developed by Murray and co-workers (Nano Lett. 2013, 13, 555), this overgrowth approach expands the dimensional and plasmonic tunability of the fabrication technology without any decrease in the monodispersity and purity of samples.

Original languageEnglish
Pages (from-to)1696-1703
Number of pages8
JournalLangmuir
Volume30
Issue number6
DOIs
Publication statusPublished - 18 Feb 2014
Externally publishedYes

Fingerprint

Nanorods
Surface-Active Agents
Gold
nanorods
Surface active agents
surfactants
gold
Seed
bromides
seeds
Suspensions
purity
Sodium
sodium
Impurities
Fabrication
impurities
fabrication
synthesis
cetrimonium

ASJC Scopus subject areas

  • Electrochemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Science(all)
  • Spectroscopy

Cite this

Khlebtsov, B. N., Khanadeev, V. A., Ye, J., Sukhorukov, G. B., & Khlebtsov, N. G. (2014). Overgrowth of gold nanorods by using a binary surfactant mixture. Langmuir, 30(6), 1696-1703. https://doi.org/10.1021/la404399n

Overgrowth of gold nanorods by using a binary surfactant mixture. / Khlebtsov, Boris N.; Khanadeev, Vitaly A.; Ye, Jian; Sukhorukov, Gleb B.; Khlebtsov, Nikolai G.

In: Langmuir, Vol. 30, No. 6, 18.02.2014, p. 1696-1703.

Research output: Contribution to journalArticle

Khlebtsov, BN, Khanadeev, VA, Ye, J, Sukhorukov, GB & Khlebtsov, NG 2014, 'Overgrowth of gold nanorods by using a binary surfactant mixture', Langmuir, vol. 30, no. 6, pp. 1696-1703. https://doi.org/10.1021/la404399n
Khlebtsov BN, Khanadeev VA, Ye J, Sukhorukov GB, Khlebtsov NG. Overgrowth of gold nanorods by using a binary surfactant mixture. Langmuir. 2014 Feb 18;30(6):1696-1703. https://doi.org/10.1021/la404399n
Khlebtsov, Boris N. ; Khanadeev, Vitaly A. ; Ye, Jian ; Sukhorukov, Gleb B. ; Khlebtsov, Nikolai G. / Overgrowth of gold nanorods by using a binary surfactant mixture. In: Langmuir. 2014 ; Vol. 30, No. 6. pp. 1696-1703.
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