Academic Journal
Stability and morphology of Ag nanoplatelets probed by depolarized dynamic light scattering
| Title: | Stability and morphology of Ag nanoplatelets probed by depolarized dynamic light scattering |
|---|---|
| Authors: | Zimbone, Massimo, Contino, Annalinda, Maccarrone, Giuseppe, Musumeci, Paolo, Lo Faro, Maria Jose Jose, Calcagno, Lucia, LO FARO, MARIA JOSE' IRENE |
| Source: | Nanotechnology. 29:265701 |
| Publisher Information: | IOP Publishing, 2018. |
| Publication Year: | 2018 |
| Subject Terms: | Ag nanoplatelets, sol stability, shape evolution, sol aging, depolarized dynamic light scattering, 02 engineering and technology, 0210 nano-technology, 01 natural sciences, 0104 chemical sciences |
| Description: | The stability of silver nanoplatelet (NP) suspensions prepared with different concentrations of trisodium citrate (TSC) was studied by depolarized dynamic light scattering (DDLS) and UV-vis spectrometry. The morphology of the nanoparticles, as well as the color and stability of the sols, are tuned by the concentration of the capping agent. The nanoparticles prepared with high TSC concentration (>10-4 M) are blue triangular NPs showing a slight truncation of the tips with aging. When low TSC concentrations are used, the color of the sols changes from blue to yellow with aging time and a strong modification of the morphology occurs: the nanoparticle shape changes from triangular to spherical. Remarkably, they show a high degree of anisotropy. The aging process was followed by the UV-vis spectra and by measuring the rotational diffusion coefficient by DDLS, providing information on the nanoparticle size and shape evolution. The high intensity of depolarized signal and the high value of rotational diffusion coefficient suggest that the aging process increases the thickness and the roughness of the nanoparticles. |
| Document Type: | Article |
| File Description: | application/pdf |
| ISSN: | 1361-6528 0957-4484 |
| DOI: | 10.1088/1361-6528/aab82b |
| Access URL: | https://pubmed.ncbi.nlm.nih.gov/29557787 https://www.ncbi.nlm.nih.gov/pubmed/29557787 https://ui.adsabs.harvard.edu/abs/2018Nanot..29z5701Z/abstract https://inis.iaea.org/search/search.aspx?orig_q=RN:51058023 https://iopscience.iop.org/article/10.1088/1361-6528/aab82b/pdf https://hdl.handle.net/20.500.11769/326849 https://doi.org/10.1088/1361-6528/aab82b http://iopscience.iop.org/article/10.1088/1361-6528/aab82b/pdf |
| Rights: | IOP Copyright Policies |
| Accession Number: | edsair.doi.dedup.....9b0ce5cacc68bb8b9cc2103cc0fa512b |
| Database: | OpenAIRE |
| ISSN: | 13616528 09574484 |
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| DOI: | 10.1088/1361-6528/aab82b |