期刊
SMALL
卷 12, 期 30, 页码 4136-4145出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201601050
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资金
- Science and Technology Key Projects of Shenzhen [JCYJ20140417113430608, JCYJ20150401145529032]
- Hong Kong Research Grants Council (RGC) General Research Funds (GRF) [CityU 11301215]
Poly(vinylpyrrolidone)-encapsulated Bi2Se3 nanosheets with a thickness of 1.7 nm and diameter of 31.4 nm are prepared by a solution method. Possessing an extinction coefficient of 11.5 L g(-1) cm(-1) at 808 nm, the ultrathin Bi2Se3 nanosheets boast a high photothermal conversion efficiency of 34.6% and excellent photoacoustic performance. After systemic administration, the Bi2Se3 nanosheets with the proper size and surface properties accumulate passively in tumors enabling efficient photoacoustic imaging of the entire tumors to facilitate photothermal cancer therapy. In vivo biodistribution studies reveal that they are expelled from the body efficiently after 30 d. The ultrathin Bi2Se3 nanosheets have large clinical potential as metabolizable near-infrared-triggered theranostic agents.
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