Sulfate-Mediated End-to-End Assembly of Gold Nanorods

S. M.H. Abtahi, Nathan D. Burrows, Fred A. Idesis, Catherine J. Murphy, Navid B. Saleh, Peter J. Vikesland

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

There is interest in the controlled aggregation of gold nanorods (GNRs) for the production of extended nanoassemblies. Prior studies have relied upon chemical modification of the GNR surface to achieve a desired final aggregate structure. Herein we illustrate that control of electrolyte composition can facilitate end-to-end assembly of cetyltrimethylammonium-bromide-coated (CTAB) GNRs. By adjusting either the sulfate anion concentration or the exposure time it is possible to connect GNRs in chain-like assemblies. In contrast, end-to-end assembly was not observed in control experiments using monovalent chloride salts. We attribute the end-to-end assembly to the localized association of sulfate with exposed quaternary ammonium head groups of CTAB at the nanorod tip. To quantify the assembly kinetics, visible-near-infrared extinction spectra were collected over a predetermined time period, and the colloidal behavior of the GNR suspensions was interpreted using plasmon band analysis. Transmission electron microscopy and atomic force microscopy results support the conclusions reached via plasmon band analysis, and the colloidal behavior is consistent with Derjaguin-Landau-Verwey-Overbeek theory.

Original languageEnglish (US)
Pages (from-to)1486-1495
Number of pages10
JournalLangmuir
Volume33
Issue number6
DOIs
StatePublished - Feb 14 2017

Fingerprint

Nanorods
Gold
nanorods
Sulfates
sulfates
assembly
gold
bromides
Light extinction
Chemical modification
Ammonium Compounds
assemblies
Electrolytes
Anions
Chlorides
Atomic force microscopy
Suspensions
extinction
Negative ions
Agglomeration

All Science Journal Classification (ASJC) codes

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

Cite this

Abtahi, S. M. H., Burrows, N. D., Idesis, F. A., Murphy, C. J., Saleh, N. B., & Vikesland, P. J. (2017). Sulfate-Mediated End-to-End Assembly of Gold Nanorods. Langmuir, 33(6), 1486-1495. https://doi.org/10.1021/acs.langmuir.6b04114
Abtahi, S. M.H. ; Burrows, Nathan D. ; Idesis, Fred A. ; Murphy, Catherine J. ; Saleh, Navid B. ; Vikesland, Peter J. / Sulfate-Mediated End-to-End Assembly of Gold Nanorods. In: Langmuir. 2017 ; Vol. 33, No. 6. pp. 1486-1495.
@article{476718ddffb04b2d9cee6b0feb288795,
title = "Sulfate-Mediated End-to-End Assembly of Gold Nanorods",
abstract = "There is interest in the controlled aggregation of gold nanorods (GNRs) for the production of extended nanoassemblies. Prior studies have relied upon chemical modification of the GNR surface to achieve a desired final aggregate structure. Herein we illustrate that control of electrolyte composition can facilitate end-to-end assembly of cetyltrimethylammonium-bromide-coated (CTAB) GNRs. By adjusting either the sulfate anion concentration or the exposure time it is possible to connect GNRs in chain-like assemblies. In contrast, end-to-end assembly was not observed in control experiments using monovalent chloride salts. We attribute the end-to-end assembly to the localized association of sulfate with exposed quaternary ammonium head groups of CTAB at the nanorod tip. To quantify the assembly kinetics, visible-near-infrared extinction spectra were collected over a predetermined time period, and the colloidal behavior of the GNR suspensions was interpreted using plasmon band analysis. Transmission electron microscopy and atomic force microscopy results support the conclusions reached via plasmon band analysis, and the colloidal behavior is consistent with Derjaguin-Landau-Verwey-Overbeek theory.",
author = "Abtahi, {S. M.H.} and Burrows, {Nathan D.} and Idesis, {Fred A.} and Murphy, {Catherine J.} and Saleh, {Navid B.} and Vikesland, {Peter J.}",
year = "2017",
month = "2",
day = "14",
doi = "10.1021/acs.langmuir.6b04114",
language = "English (US)",
volume = "33",
pages = "1486--1495",
journal = "Langmuir",
issn = "0743-7463",
publisher = "American Chemical Society",
number = "6",

}

Abtahi, SMH, Burrows, ND, Idesis, FA, Murphy, CJ, Saleh, NB & Vikesland, PJ 2017, 'Sulfate-Mediated End-to-End Assembly of Gold Nanorods', Langmuir, vol. 33, no. 6, pp. 1486-1495. https://doi.org/10.1021/acs.langmuir.6b04114

Sulfate-Mediated End-to-End Assembly of Gold Nanorods. / Abtahi, S. M.H.; Burrows, Nathan D.; Idesis, Fred A.; Murphy, Catherine J.; Saleh, Navid B.; Vikesland, Peter J.

In: Langmuir, Vol. 33, No. 6, 14.02.2017, p. 1486-1495.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Sulfate-Mediated End-to-End Assembly of Gold Nanorods

AU - Abtahi, S. M.H.

AU - Burrows, Nathan D.

AU - Idesis, Fred A.

AU - Murphy, Catherine J.

AU - Saleh, Navid B.

AU - Vikesland, Peter J.

PY - 2017/2/14

Y1 - 2017/2/14

N2 - There is interest in the controlled aggregation of gold nanorods (GNRs) for the production of extended nanoassemblies. Prior studies have relied upon chemical modification of the GNR surface to achieve a desired final aggregate structure. Herein we illustrate that control of electrolyte composition can facilitate end-to-end assembly of cetyltrimethylammonium-bromide-coated (CTAB) GNRs. By adjusting either the sulfate anion concentration or the exposure time it is possible to connect GNRs in chain-like assemblies. In contrast, end-to-end assembly was not observed in control experiments using monovalent chloride salts. We attribute the end-to-end assembly to the localized association of sulfate with exposed quaternary ammonium head groups of CTAB at the nanorod tip. To quantify the assembly kinetics, visible-near-infrared extinction spectra were collected over a predetermined time period, and the colloidal behavior of the GNR suspensions was interpreted using plasmon band analysis. Transmission electron microscopy and atomic force microscopy results support the conclusions reached via plasmon band analysis, and the colloidal behavior is consistent with Derjaguin-Landau-Verwey-Overbeek theory.

AB - There is interest in the controlled aggregation of gold nanorods (GNRs) for the production of extended nanoassemblies. Prior studies have relied upon chemical modification of the GNR surface to achieve a desired final aggregate structure. Herein we illustrate that control of electrolyte composition can facilitate end-to-end assembly of cetyltrimethylammonium-bromide-coated (CTAB) GNRs. By adjusting either the sulfate anion concentration or the exposure time it is possible to connect GNRs in chain-like assemblies. In contrast, end-to-end assembly was not observed in control experiments using monovalent chloride salts. We attribute the end-to-end assembly to the localized association of sulfate with exposed quaternary ammonium head groups of CTAB at the nanorod tip. To quantify the assembly kinetics, visible-near-infrared extinction spectra were collected over a predetermined time period, and the colloidal behavior of the GNR suspensions was interpreted using plasmon band analysis. Transmission electron microscopy and atomic force microscopy results support the conclusions reached via plasmon band analysis, and the colloidal behavior is consistent with Derjaguin-Landau-Verwey-Overbeek theory.

UR - http://www.scopus.com/inward/record.url?scp=85012919570&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85012919570&partnerID=8YFLogxK

U2 - 10.1021/acs.langmuir.6b04114

DO - 10.1021/acs.langmuir.6b04114

M3 - Article

AN - SCOPUS:85012919570

VL - 33

SP - 1486

EP - 1495

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 6

ER -

Abtahi SMH, Burrows ND, Idesis FA, Murphy CJ, Saleh NB, Vikesland PJ. Sulfate-Mediated End-to-End Assembly of Gold Nanorods. Langmuir. 2017 Feb 14;33(6):1486-1495. https://doi.org/10.1021/acs.langmuir.6b04114