Journal
JOURNAL OF MATERIALS SCIENCE
Volume 52, Issue 17, Pages 9979-9989Publisher
SPRINGER
DOI: 10.1007/s10853-017-1178-3
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Funding
- National Natural Science Foundation of China [51272098, 51551201]
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Carbon dots are a new and important form of zero-dimensional carbonaceous nanomaterials. In our present work, disperse water-soluble fluorescent carbon dots were prepared using coffee grounds as raw material by hydrothermal treatment. The as-prepared carbon dots exhibit an excitation-dependent and high photostable photoluminescence behavior which can be applied to Hela cell imaging. Notably, the fluorescence of the carbon dots can be quenched by Fe3+ ions, which can serve as a useful fluorescent probe for detecting Fe3+ ions.
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