期刊
ADVANCED FUNCTIONAL MATERIALS
卷 27, 期 10, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201606218
关键词
CuCo2S4 nanocrystals; DFT calculations; photothermal therapy; ternary bimetal chalcogenides; ultrasmall magnetic resonance imaging
类别
资金
- Engineering and Physical Sciences Research Council [EP/L000202]
- National Key Research and Development Program of China [2016YFB0700803]
- Natural Science Foundation of China [81472048, 81370423]
- Key Research Program of Frontier Sciences, CAS [QYZDB-SSW-SYS027]
- Program of Shanghai Outstanding Academic Leaders [15XD1503900]
- Natural Science Foundation of Jiangsu Province, China [BK20161168]
- EPSRC [EP/F06120X/1, EP/E046193/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F06120X/1, GR/S52636/01, EP/E046193/1] Funding Source: researchfish
Copper-based ternary bimetal chalcogenides have very promising potential as multifunctional theragnosis nanoplatform for photothermal treatment of tumors. However, the design and synthesis of such an effective platform remains challenging. In this study, hydrophilic CuCo2S4 nanocrystals (NCs) with a desirable size of approximate to 10 nm are synthesized by a simple one-pot hydrothermal route. The as-prepared ultrasmall CuCo2S4 NCs show: 1) intense near-infrared absorption, which is attributed to 3d electronic transitions from the valence band to an intermediate band, as identified by density functional theory calculations; 2) high photothermal performance with a photothermal conversion efficiency up to 73.4%; and 3) capability for magnetic resonance (MR) imaging, as a result of the unpaired 3d electrons of cobalt. Finally, it is demonstrated that the CuCo2S4 NCs are a promising all-in-one photothermal theragnosis nanoplatform for photothermal cancer therapy under the irradiation of a 915 nm laser at a safe power density of 0.5 W cm(-2), guided by MR and infrared thermal imaging. This work further promotes the potential applications of ternary bimetal chalcogenides for photothermal theragnosis therapy.
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