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Ultrasmall CuCo2S4 Nanocrystals: All-in-One Theragnosis Nanoplatform with Magnetic Resonance/Near-Infrared Imaging for Efficiently Photothermal Therapy of Tumors

Li, B; Yuan, F; He, G; Han, X; Wang, X; Qin, J; Guo, ZX; ... Wu, C; + view all (2017) Ultrasmall CuCo2S4 Nanocrystals: All-in-One Theragnosis Nanoplatform with Magnetic Resonance/Near-Infrared Imaging for Efficiently Photothermal Therapy of Tumors. Advanced Functional Materials , 27 (10) , Article 1606218. 10.1002/adfm.201606218. Green open access

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Abstract

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 ≈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.

Type: Article
Title: Ultrasmall CuCo2S4 Nanocrystals: All-in-One Theragnosis Nanoplatform with Magnetic Resonance/Near-Infrared Imaging for Efficiently Photothermal Therapy of Tumors
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/adfm.201606218
Publisher version: http://dx.doi.org/10.1002/adfm.201606218
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Physical Sciences, Technology, Chemistry, Multidisciplinary, Chemistry, Physical, Nanoscience & Nanotechnology, Materials Science, Multidisciplinary, Physics, Applied, Physics, Condensed Matter, Chemistry, Science & Technology - Other Topics, Materials Science, Physics, CuCo2S4 nanocrystals, DFT calculations, photothermal therapy, ternary bimetal chalcogenides, ultrasmall magnetic resonance imaging, 980 nm laser, Quantum Dots, Conversion Efficiency, Cancer-Cells, Fe5C2 Nanoparticles, Facile Synthesis, Renal Clearance, Brillouin-Zone, Special Points, Agent
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/1550250
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