articleAngewandte Chemie International EditionAug 21, 2015Closed access

Ultrasmall Black Phosphorus Quantum Dots: Synthesis and Use as Photothermal Agents

ZSZhengbo SunHXHanhan XieSTSiying TangXYXue‐Feng YuZGZhinan Guo

Shenzhen University · Chinese Academy of Sciences · +2 more institutions

PubMed
Indexed incrossrefpubmed

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 L g(-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 that the…

Citation impact

1,103
total citations
FWCI
53.63
Percentile
100%
References
50
Citations per year

Authors

10

Topics & keywords

Topics
Keywords
  • Photothermal therapy
  • Exfoliation joint
  • Sonication
  • Black phosphorus
  • Quantum dot
  • Photothermal effect
  • Nanoparticle
  • Materials science
No related works found for this paper.

Funding