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Dickinson, FM, Alsop, TA, Al-Sharif, N, Berger, CEM, Datta, HK, Šiller, L., Chao, Y 
ORCID: https://orcid.org/0000-0002-8488-2690, Tuite, EM, Houlton, A and Horrocks, BR
(2008)
Dispersions of alkyl-capped silicon nanocrystals in aqueous media: photoluminescence and ageing.
The Analyst, 133 (11).
pp. 1573-1580.
ISSN 0003-2654
Abstract
Water-dispersible silicon nanoparticles (Si-NPs) are desirable for applications in biological techniques. A simplified method to synthesize such particles is reported here. The resulting Si-NPs are water-dispersible and luminescent. Under the excitation of UV light, the Si-NPs emit strong red light with a peak maximum at 606 nm and a quantum yield of 6%. They are highly stable, and remain so over several weeks. Fourier Transform Infrared (FTIR) spectroscopy shows a visible Si–CH2 scissoring vibration mode. Furthermore, the surface chemical bondings were confirmed by X-ray photoelectron spectroscopy (XPS). In the Si2p and C1s core levels, Si–C components are observed. The diameters of the synthesized Si-NPS as measured by atomic force microscope (AFM) are approximately 5 nm. Furthermore, the nanoparticles can be taken up by cultured cells. Fluorescence images of Si-NPs within MCF-7 human breast cancer cells show they are distributed throughout the cell tissue.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | sdg 3 - good health and well-being ,/dk/atira/pure/sustainabledevelopmentgoals/good_health_and_well_being |
| Faculty \ School: | Faculty of Science > School of Chemistry |
| Depositing User: | Rachel Smith |
| Date Deposited: | 21 Mar 2011 12:07 |
| Last Modified: | 15 Dec 2022 01:27 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/26765 |
| DOI: | 10.1039/b801921e |
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