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Advances with Molecular Nanomaterials in Industrial Manufacturing Applications
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The Influence of Alkanethiols on the Production of Hydrophobic Gold Nanoparticles via Pulsed Laser Ablation in Liquids

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Department of Physics, Rutgers University, Camden, NJ 08102, USA
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Department of Applied Physics, Rutgers University, Newark, NJ 07102, USA
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Department of Chemistry, Rutgers University, Camden, NJ 08102, USA
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Center for Computational and Integrative Biology, Rutgers University, Camden, NJ 08103, USA
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Author to whom correspondence should be addressed.
Academic Editors: Alina A. Manshina and Ilya Tumkin
Received: 23 July 2021 / Revised: 1 September 2021 / Accepted: 15 September 2021 / Published: 22 September 2021
(This article belongs to the Special Issue Synthesis of Nanostructured Materials Induced by Laser Irradiation)
The ability to suspend plasmonic metal nanoparticles in apolar environments is an important feat towards harnessing their optical properties for use in amphiphilic biological environments. Pulsed laser Ablation in Liquids (PLAL) is a well-established method for the production of gold nanoparticles (AuNPs) in aqueous environments; however, ablation in organic liquids for the synthesis of hydrophobic AuNPs still has many unknowns, such as the relationship between colloidal stability and the ligand shell. In this study, hydrophobic AuNPs were produced by PLAL of gold in a 1-alkanethiol/n-decane solution and treated with laser fragmentation. Results demonstrate that longer chain length ATs produced particles with a smaller average size; however, there was no strong correlation between alkanethiol (AT) concentration and particle size. Stability was investigated by monitoring the temporal evolution of the extinction spectra which revealed that lower concentrations of AT stabilize the colloids while higher concentrations tend to result in quicker particle aggregation. Furthermore, longer chain length ATs demonstrated improved stability. Additionally, vibrational spectroscopy was employed to examine the AuNP surface chemistry, which pointed to the presence of oxidized carbon species and graphitic carbon. View Full-Text
Keywords: hydrophobic; gold nanoparticles; alkanethiol shell; pulsed laser ablation in liquids; photodegradation; colloidal stability hydrophobic; gold nanoparticles; alkanethiol shell; pulsed laser ablation in liquids; photodegradation; colloidal stability
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MDPI and ACS Style

Trout, C.J.; Kumpf, P.; Sipps, K.; Griepenburg, J.C.; O’Malley, S.M. The Influence of Alkanethiols on the Production of Hydrophobic Gold Nanoparticles via Pulsed Laser Ablation in Liquids. Nanomanufacturing 2021, 1, 98-108. https://0-doi-org.brum.beds.ac.uk/10.3390/nanomanufacturing1030009

AMA Style

Trout CJ, Kumpf P, Sipps K, Griepenburg JC, O’Malley SM. The Influence of Alkanethiols on the Production of Hydrophobic Gold Nanoparticles via Pulsed Laser Ablation in Liquids. Nanomanufacturing. 2021; 1(3):98-108. https://0-doi-org.brum.beds.ac.uk/10.3390/nanomanufacturing1030009

Chicago/Turabian Style

Trout, Cory J., Paul Kumpf, Karli Sipps, Julianne C. Griepenburg, and Sean M. O’Malley 2021. "The Influence of Alkanethiols on the Production of Hydrophobic Gold Nanoparticles via Pulsed Laser Ablation in Liquids" Nanomanufacturing 1, no. 3: 98-108. https://0-doi-org.brum.beds.ac.uk/10.3390/nanomanufacturing1030009

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