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Aliquat 336 stabilized multi-faceted gold nanoparticles with minimal ligand density

Using Methyltrioctylammonium chloride (Aliquat 336) as a shaping and stabilizing agent for the first time, quasi-spherical and multi-faceted gold (Au) nanoparticles (NPs) are synthesized via seed mediated protocol. These slightly elongated NPs devoid of any centre of symmetry are found to possess so...

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Main Authors: Naz, Gul, Othaman, Zulkafli, Shamsuddin, Mustaffa, Ghoshal, S. Krishna
Format: Article
Published: 2016
Subjects:
QC Physics
Online Access:http://eprints.utm.my/id/eprint/68763/
https://doi.org/10.1016/j.apsusc.2015.11.124
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spelling my.utm.687632017-11-20T08:52:16Z http://eprints.utm.my/id/eprint/68763/ Aliquat 336 stabilized multi-faceted gold nanoparticles with minimal ligand density Naz, Gul Othaman, Zulkafli Shamsuddin, Mustaffa Ghoshal, S. Krishna QC Physics Using Methyltrioctylammonium chloride (Aliquat 336) as a shaping and stabilizing agent for the first time, quasi-spherical and multi-faceted gold (Au) nanoparticles (NPs) are synthesized via seed mediated protocol. These slightly elongated NPs devoid of any centre of symmetry are found to possess some twin defects on their surfaces as confirmed by TEM analysis. Their Surface plasmon resonance band is evidenced at 534 nm. The growth progression is examined through the formation of translational Au NPs during the reaction. Such Aliquat 336 stabilized NPs are demonstrated to achieve minimal ligand density. This is attributed to the formation of hexagonally patterned self-assembled monolayer of ligand molecules over the surface of Au NPs. TGA and DLS experiments are performed to quantify the ligand density on the surface of these multi-faceted Au NPs. EDX, FTIR, and XPS measurements are accomplished to determine the structure and binding of ligand molecules to Au surface. Further, these NPs are found to be luminescent with violet emission under an excitation at 320 nm. The admirable features of the results suggest that our method may constitute a basis for the facile synthesis of functionalized and luminescent multi-faceted Au NPs with minimal ligand density, potential for sundry biomedical applications. 2016 Article PeerReviewed Naz, Gul and Othaman, Zulkafli and Shamsuddin, Mustaffa and Ghoshal, S. Krishna (2016) Aliquat 336 stabilized multi-faceted gold nanoparticles with minimal ligand density. Applied Surface Science, 363 . pp. 74-82. https://doi.org/10.1016/j.apsusc.2015.11.124 DOI:10.1016/j.apsusc.2015.11.124
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic QC Physics
spellingShingle QC Physics
Naz, Gul
Othaman, Zulkafli
Shamsuddin, Mustaffa
Ghoshal, S. Krishna
Aliquat 336 stabilized multi-faceted gold nanoparticles with minimal ligand density
description Using Methyltrioctylammonium chloride (Aliquat 336) as a shaping and stabilizing agent for the first time, quasi-spherical and multi-faceted gold (Au) nanoparticles (NPs) are synthesized via seed mediated protocol. These slightly elongated NPs devoid of any centre of symmetry are found to possess some twin defects on their surfaces as confirmed by TEM analysis. Their Surface plasmon resonance band is evidenced at 534 nm. The growth progression is examined through the formation of translational Au NPs during the reaction. Such Aliquat 336 stabilized NPs are demonstrated to achieve minimal ligand density. This is attributed to the formation of hexagonally patterned self-assembled monolayer of ligand molecules over the surface of Au NPs. TGA and DLS experiments are performed to quantify the ligand density on the surface of these multi-faceted Au NPs. EDX, FTIR, and XPS measurements are accomplished to determine the structure and binding of ligand molecules to Au surface. Further, these NPs are found to be luminescent with violet emission under an excitation at 320 nm. The admirable features of the results suggest that our method may constitute a basis for the facile synthesis of functionalized and luminescent multi-faceted Au NPs with minimal ligand density, potential for sundry biomedical applications.
format Article
author Naz, Gul
Othaman, Zulkafli
Shamsuddin, Mustaffa
Ghoshal, S. Krishna
author_facet Naz, Gul
Othaman, Zulkafli
Shamsuddin, Mustaffa
Ghoshal, S. Krishna
author_sort Naz, Gul
title Aliquat 336 stabilized multi-faceted gold nanoparticles with minimal ligand density
title_short Aliquat 336 stabilized multi-faceted gold nanoparticles with minimal ligand density
title_full Aliquat 336 stabilized multi-faceted gold nanoparticles with minimal ligand density
title_fullStr Aliquat 336 stabilized multi-faceted gold nanoparticles with minimal ligand density
title_full_unstemmed Aliquat 336 stabilized multi-faceted gold nanoparticles with minimal ligand density
title_sort aliquat 336 stabilized multi-faceted gold nanoparticles with minimal ligand density
publishDate 2016
url http://eprints.utm.my/id/eprint/68763/
https://doi.org/10.1016/j.apsusc.2015.11.124
_version_ 1643655972220043264
score 13.211869

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