期刊
NANOMATERIALS
卷 9, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/nano9030387
关键词
carbon quantum dots; autohydrolyzate; hydrothermal treatment; fluorescence; bioimaging
类别
资金
- Natural Science Foundation of Jiangsu Province [BK20180772]
- National Natural Science Foundation of China [31800501]
The carbon quantum dot (CQD), a fluorescent carbon nanoparticle, has attracted considerable interest due to its photoluminescent property and promising applications in cell imaging and bioimaging. In this work, biocompatible, photostable, and sustainably sourced CQDs were synthesized from byproducts derived from a biorefinery process using one-pot hydrothermal treatment. The main components of byproducts were the degradation products (autohydrolyzate) of biomass pretreated by autohydrolysis. The as-synthesized CQDs had a size distribution from 2.0-6.0 nm and had high percentage of sp(2) and sp(3) carbon groups. The CQDs showed blue-green fluorescence with a quantum yield of similar to 13%, and the fluorescence behaviors were found to be stable with strong resistance to photobleaching and temperature change. In addition, it is found that the as-synthesized CQDs could be used for imaging of cells and tumors, which show potential applications in bioimaging and related fields such as phototherapy and imaging.
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