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Highly efficient photothermal heating via distorted edge-defects in boron quantum dots.
Li Wang1, Si-Min Xu2, Shanyue Guan3
1Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China. guanshanyue@mail.ipc.ac.cn and Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China. quxz@iccas.ac.cn.
Boron quantum dots (B QDs) show high photothermal conversion efficiency for cancer therapy. These non-toxic B QDs are promising for near-infrared imaging and photothermal treatment.
Area of Science:
- Materials Science
- Nanotechnology
- Biomedical Engineering
Background:
- Quantum dots (QDs) are explored as near-infrared (NIR) photothermal agents for cancer.
- Current research focuses on improving photothermal conversion efficiency (PCE).
Purpose of the Study:
- To report the synthesis of novel boron quantum dots (B QDs).
- To evaluate their potential as NIR-driven cancer theranostic agents.
Main Methods:
- Facile synthesis of 2-3 nm B QDs.
- Characterization using B K-edge NEXAFS, HR-TEM, and DFT calculations.
- Assessment of photothermal conversion efficiency under NIR excitation.
Main Results:
- Achieved a remarkable PCE of 57% under NIR excitation.
- Demonstrated that altered electronic structure due to edge effects enhances PCE.
- Confirmed findings through NEXAFS, HR-TEM, and DFT analysis.
Conclusions:
- B QDs exhibit excellent NIR-driven photothermal conversion efficiency.
- B QDs are a promising, non-toxic agent for cancer imaging and photothermal therapy.
- The synthesis method is simple and scalable for potential clinical applications.
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