Control of the size distribution of AuNPs for colorimetric sensing by pulsed laser ablation in liquids
Gold nanoparticles (AuNPs) are extensively employed in colorimetric sensing, taking advantage of their optical properties to detect variables via observable color changes. These properties are primarily driven by localized surface plasmon resonance (LSPR), particularly pronounced in AuNPs within the...
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| Language: | English |
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Elsevier
2025-01-01
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| Series: | Kuwait Journal of Science |
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| Online Access: | https://www.sciencedirect.com/science/article/pii/S2307410824001196 |
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| description | Gold nanoparticles (AuNPs) are extensively employed in colorimetric sensing, taking advantage of their optical properties to detect variables via observable color changes. These properties are primarily driven by localized surface plasmon resonance (LSPR), particularly pronounced in AuNPs within the visible spectrum. In this study, AuNPs were synthesized via pulsed laser ablation in liquids (PLAL) with a laser pulse energy (Ep) ranging from 25 mJ to 75 mJ. Size distributions, hydrodynamic diameters, polydispersity indices (PDI), absorbance intensity, and LSPR were characterized. Spherical AuNPs with FCC structure were synthesized, exhibiting a maximum absorption peak centered at approximately 529 nm wavelength and a size range between 50 nm and 178 nm, easily adjustable depending on the laser pulse energy used in the synthesis process. An anomalous behavior was noted at Ep=50 mJ, exhibiting three peaks in size distribution, high PDI, low absorbance intensity, and indistinct LSPR. By extending the ablation time from 10 min to 30 min, particle size decreased alongside lower PDI. Size distributions transitioned from three to two peaks, absorbance increased, and LSPR became readily identifiable. These findings underscore the size control over AuNP characteristics achievable through PLAL synthesis parameters, promising significant implications for the optimization of colorimetric sensor design and development. © 2024 The Author(s) |
| format | Article |
| id | doaj-art-88dc40443bf8458fbfcb1a9a62df7d0a |
| institution | Kabale University |
| issn | 2307-4108 2307-4116 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Kuwait Journal of Science |
| spelling | doaj-art-88dc40443bf8458fbfcb1a9a62df7d0a2025-08-20T03:47:21ZengElsevierKuwait Journal of Science2307-41082307-41162025-01-0152110029410.1016/j.kjs.2024.100294Control of the size distribution of AuNPs for colorimetric sensing by pulsed laser ablation in liquidsGold nanoparticles (AuNPs) are extensively employed in colorimetric sensing, taking advantage of their optical properties to detect variables via observable color changes. These properties are primarily driven by localized surface plasmon resonance (LSPR), particularly pronounced in AuNPs within the visible spectrum. In this study, AuNPs were synthesized via pulsed laser ablation in liquids (PLAL) with a laser pulse energy (Ep) ranging from 25 mJ to 75 mJ. Size distributions, hydrodynamic diameters, polydispersity indices (PDI), absorbance intensity, and LSPR were characterized. Spherical AuNPs with FCC structure were synthesized, exhibiting a maximum absorption peak centered at approximately 529 nm wavelength and a size range between 50 nm and 178 nm, easily adjustable depending on the laser pulse energy used in the synthesis process. An anomalous behavior was noted at Ep=50 mJ, exhibiting three peaks in size distribution, high PDI, low absorbance intensity, and indistinct LSPR. By extending the ablation time from 10 min to 30 min, particle size decreased alongside lower PDI. Size distributions transitioned from three to two peaks, absorbance increased, and LSPR became readily identifiable. These findings underscore the size control over AuNP characteristics achievable through PLAL synthesis parameters, promising significant implications for the optimization of colorimetric sensor design and development. © 2024 The Author(s)https://www.sciencedirect.com/science/article/pii/S2307410824001196colorimetric sensinggold nanoparticleplasmonpulsed laser ablation in liquidssize control |
| spellingShingle | Control of the size distribution of AuNPs for colorimetric sensing by pulsed laser ablation in liquids Kuwait Journal of Science colorimetric sensing gold nanoparticle plasmon pulsed laser ablation in liquids size control |
| title | Control of the size distribution of AuNPs for colorimetric sensing by pulsed laser ablation in liquids |
| title_full | Control of the size distribution of AuNPs for colorimetric sensing by pulsed laser ablation in liquids |
| title_fullStr | Control of the size distribution of AuNPs for colorimetric sensing by pulsed laser ablation in liquids |
| title_full_unstemmed | Control of the size distribution of AuNPs for colorimetric sensing by pulsed laser ablation in liquids |
| title_short | Control of the size distribution of AuNPs for colorimetric sensing by pulsed laser ablation in liquids |
| title_sort | control of the size distribution of aunps for colorimetric sensing by pulsed laser ablation in liquids |
| topic | colorimetric sensing gold nanoparticle plasmon pulsed laser ablation in liquids size control |
| url | https://www.sciencedirect.com/science/article/pii/S2307410824001196 |