Ultrasmall Black Phosphorus Quantum Dots: Synthesis and Use as Photothermal Agents
Shenzhen University · Chinese Academy of Sciences · +2 more institutions
Abstract
Abstract Black phosphorus quantum dots (BPQDs) were synthesized using a liquid exfoliation method that combined probe sonication and bath sonication. With a lateral size of approximately 2.6 nm and a thickness of about 1.5 nm, the ultrasmall BPQDs exhibited an excellent NIR photothermal performance with a large extinction coefficient of 14.8 Lg −1 cm −1 at 808 nm, a photothermal conversion efficiency of 28.4 %, as well as good photostability. After PEG conjugation, the BPQDs showed enhanced stability in physiological medium, and there was no observable toxicity to different types of cells. NIR photoexcitation of the BPQDs in the presence of C6 and MCF7 cancer cells led to significant cell death, suggesting…
Citation impact
- FWCI
- 50.96
- Percentile
- 100%
- References
- 48
Authors
10- ZSZhengbo Sun
Shenzhen University, Chinese Academy of Sciences, Shenzhen Institutes of Advanced Technology
- HXHanhan Xie
Chinese Academy of Sciences, Shenzhen Institutes of Advanced Technology
- STSiying Tang
Chinese Academy of Sciences, Shenzhen Institutes of Advanced Technology
- XYXue‐Feng YuCorresponding
City University of Hong Kong, Shenzhen University, Chinese Academy of Sciences, Shenzhen Institutes of Advanced Technology
- ZGZhinan Guo
Shenzhen University
Topics & keywords
- Photothermal therapy
- Exfoliation joint
- Sonication
- Black phosphorus
- Quantum dot
- Photothermal effect
- Nanoparticle
- Materials science