期刊
JOURNAL OF MATERIALS CHEMISTRY B
卷 2, 期 34, 页码 5594-5601出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4tb00669k
关键词
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资金
- financially supported by the National Natural Science Foundation of China [51272299, 51273040, 50925312]
- High-Tech Research and Development Program of China [2012AA030309]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT1221, T2011079]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, project of the Shanghai Committee of Science and Technology [13JC1400300]
- Innovation Program of Shanghai Municipal Education Commission [13ZZ053]
- Shanghai Leading Academic Discipline Project [B603]
- Program of Introducing Talents of Discipline to Universities [111-2-04]
- Fundamental Research Funds for the Central Universities
- DHU Distinguished Young Professor Program
Near-infrared (NIR) laser-induced photothermal ablation (PTA) therapy has great potential to revolutionize conventional therapeutic approaches for cancers, and a prerequisite is to obtain biocompatible and efficient photothermal agents. Herein, we have developed hydrophilic W18O49 nanowires with average lengths of about 800 nm (abbreviated as W18O49-800 NWs) as an efficient photothermal agent, which are prepared by the solvothermal synthesis-simultaneous PEGylation/ exfoliation/ breaking two-step route. These W18O49-800 NWs exhibit stronger NIR photoabsorption than short nanowires with average lengths of about 50 nm (abbreviated as W18O49-50 NWs) that are prepared via a solvothermal one-step route. Under irradiation of 980 nm with a safe intensity of 0.72 W cm(-2), the aqueous dispersion of W18O49-800 NWs (1.0 mg mL(-1)) exhibits the temperature elevation by 35.2 degrees C in 5 min; which is a 37.5% increase compared to that (by 25.6 degrees C) from W18O49-50 NWs (1.0 mg mL(-1)). More importantly, under 980 nm laser irradiation (0.72 W cm(-2)) for 10 min, in vivo cancer cells can be efficiently ablated by the photothermal effects of W18O49-800 NWs. Therefore, these W18O49-800 NWs can be used as a more efficient and promising photothermal nanoagent for the ablation of cancer cells in vivo.
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