期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 4, 期 9, 页码 4724-4731出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.6b00935
关键词
Eutrophication; Microwave synthesis; Stability of CDs; Zeta potential; Photophysics of CDs; Cytotoxicity; MCF-7 cell imaging
资金
- DST-INSPIRE JRF scheme [1F120528]
- DST-INSPIRE SRF scheme [1F120528]
- CSIR JRF scheme
- CSIR SRF scheme
Carbon dots (CDs) synthesized from biological sources have attracted much interest in bioimaging and biomedical applications due to their excellent biocompatibility, and thus, a facile synthesis of CDs with high fluorescence quantum yield (QY) is requisite for practical applications. In this work, we report a simple, rapid, and green approach to synthesize photoluminescent CDs using eutrophic algal blooms as the carbon source. This method offers a possibility for large scale production of highly luminescent CDs (QY = 13%) with the average particle size 8 nm. These CDs are highly water-soluble and exhibit nanosecond fluorescence lifetime with high photostability, luminescence stability in different environments, low cytotoxicity, and excellent cell permeability. Laser scanning confocal microscopy shows the uptake of CDs by MCF-7 cells, and the destined application of these CDs as a potential biomarker is demonstrated.
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