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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| Format: | Article |
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2016
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| 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 |
| collection | ePrints |
| 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. |
| first_indexed | 2024-03-05T19:59:14Z |
| format | Article |
| id | utm.eprints-68763 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T19:59:14Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | utm.eprints-687632017-11-20T08:52:16Z http://eprints.utm.my/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 |
| spellingShingle | QC Physics Naz, Gul Othaman, Zulkafli Shamsuddin, Mustaffa Ghoshal, S. Krishna Aliquat 336 stabilized multi-faceted gold nanoparticles with minimal ligand density |
| title | 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_short | Aliquat 336 stabilized multi-faceted gold nanoparticles with minimal ligand density |
| title_sort | aliquat 336 stabilized multi faceted gold nanoparticles with minimal ligand density |
| topic | QC Physics |
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