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Ahire, Jayshree H., Wang, Qi, Coxon, Paul R., Malhotra, Girish, Brydson, Rik, Chen, Rongjun and Chao, Yimin 
ORCID: https://orcid.org/0000-0002-8488-2690
(2012)
Highly luminescent and nontoxic amine-capped nanoparticles from porous silicon: Synthesis and their use in biomedical imaging.
ACS Applied Materials & Interfaces, 4 (6).
3285–3292.
ISSN 1944-8244
Abstract
Stable and brightly luminescent amine-terminated Si nanoparticles (SiNPs) have been synthesized from electrochemically etched porous silicon (PSi). The surface amine termination was confirmed by FTIR, NMR, and XPS studies. The mean diameter of the crystal core of 4.6 nm was measured by transmission electron microscopy (TEM), which is in a good agreement with the size obtained by dynamic light scattering (DLS). The dry, amine-terminated product can be obtained from bulk silicon wafers in less than 4 h. This represents a significant improvement over similar routines using PSi where times of >10 h are common. The emission quantum yield was found to be about 22% and the nanoparticles exhibited an exceptional stability over a wide pH range (4–14). They are resistant to aging over several weeks. The amine-terminated SiNPs showed no significant cytotoxic effects toward HepG2 cells, as assessed with MTT assays.
| Item Type: | Article |
|---|---|
| Faculty \ School: | Faculty of Science > School of Chemistry |
| UEA Research Groups: | Faculty of Medicine and Health Sciences > Research Centres > Metabolic Health Faculty of Science > Research Groups > Physical and Analytical Chemistry (former - to 2017) Faculty of Science > Research Groups > Chemistry of Materials and Catalysis Faculty of Science > Research Groups > Energy Materials Laboratory |
| Depositing User: | Users 2731 not found. |
| Date Deposited: | 04 Jul 2012 10:27 |
| Last Modified: | 23 Apr 2024 14:30 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/39059 |
| DOI: | 10.1021/am300642m |
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