Synthesis of water-dispersible photoluminescent silicon nanoparticles and their use in biological fluorescent imaging
(2011) In Journal of Nanoparticle Research 13(1). p.405-413- 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... (More)
- 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. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1877963
- author
- Wang, Qi ; Ni, Hongjun ; Pietzsch, Annette LU ; Hennies, Franz LU ; Bao, Yongping and Chao, Yimin
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Silicon nanoparticles, Photoluminescence, X-ray photoelectron, spectroscopy, Bio-imaging, Nanobiology, Nanomedicine
- in
- Journal of Nanoparticle Research
- volume
- 13
- issue
- 1
- pages
- 405 - 413
- publisher
- Springer
- external identifiers
-
- wos:000286667000033
- scopus:79551596637
- ISSN
- 1572-896X
- DOI
- 10.1007/s11051-010-0047-7
- language
- English
- LU publication?
- yes
- id
- 7ccd102e-f7ef-4ac1-a405-ad952f8dbd78 (old id 1877963)
- date added to LUP
- 2016-04-01 10:22:26
- date last changed
- 2022-04-04 17:28:52
@article{7ccd102e-f7ef-4ac1-a405-ad952f8dbd78, 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.}}, author = {{Wang, Qi and Ni, Hongjun and Pietzsch, Annette and Hennies, Franz and Bao, Yongping and Chao, Yimin}}, issn = {{1572-896X}}, keywords = {{Silicon nanoparticles; Photoluminescence; X-ray photoelectron; spectroscopy; Bio-imaging; Nanobiology; Nanomedicine}}, language = {{eng}}, number = {{1}}, pages = {{405--413}}, publisher = {{Springer}}, series = {{Journal of Nanoparticle Research}}, title = {{Synthesis of water-dispersible photoluminescent silicon nanoparticles and their use in biological fluorescent imaging}}, url = {{http://dx.doi.org/10.1007/s11051-010-0047-7}}, doi = {{10.1007/s11051-010-0047-7}}, volume = {{13}}, year = {{2011}}, }