期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 113, 期 43, 页码 18546-18551出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp905912n
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资金
- National Brain Research Centre (NBRC), Gurgaon, India
- DST, Government of India [SR/S5/NM-47/2005]
- CSIR, India
Fluorescent carbon nanoparticles (CNPs) 2-6 nm in size with a quantum yield of about similar to 3% were synthesized via nitric acid oxidation of carbon soot, and this approach can be used for milligram-scale synthesis of these water-soluble particles. These CNPs are nanocrystalline with a predominantly graphitic structure and show green fluorescence under UV exposure. Nitric acid oxidation induces nitrogen and oxygen incorporation into soot particles, which afforded water solubility and a light-emitting property; the isolation of small particles from a mixture of different sized particles, improved the fluorescence quantum yield. These CNPs show encouraging cell-imaging applications. They enter into cells without any further functionalization, and the fluorescence property of these particles can be used for fluorescence-based cell imaging applications.
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