Journal
NANOTECHNOLOGY
Volume 25, Issue 31, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/25/31/315702
Keywords
carbon dots; bioimaging; hydrothermal carbonization
Funding
- National Natural Science Foundation of China [81301316, 31200676, 81273202, 81302716, 81372718]
- PhD Programs Foundation of Ministry of Education of China [20123227120008]
- China Postdoctoral Science Foundation [2013M540425, 2014T70486, 2013M542520]
- Senior Talents Scientific Research Foundation of Jiangsu University [13JDG022, 11JDG113]
- Clinical Medicine Science and Technology Project of Jiangsu Province [BL2013024]
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Carbon quantum dots (CDs) are promising nanomaterials in biomedical, photocatalytical and photoelectronic applications. However, determining how to explore an ideal precursor for a renewable carbon resource is still an interesting challenge. Here, for the first time, we report that renewable wastes of bagasse as a new precursor were prepared for fluorescent CDs by a hydrothermal carbonization (HTC) process. The characterization results show that such bagasse-derived CDs are monodispersed, contain quasi spherical particles with a diameter of about 1.8 nm and exhibit favorable photoluminescence properties, super-high photostability and good dispersibility in water. Most importantly, bagasse-derived CDs have good biocompatibility and can be easily and quickly internalized by living cancer cells; they can also be used for multicolour biolabeling and bioimaging in cancer cells. It is suggested that bagasse-derived CDs might have potential applications in biomedical and photoelectronic fields.
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