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Vacancy engineering of Cu2-xSe nanoparticles with tunable LSPR and magnetism for dual-modal imaging guided photothermal therapy of cancer

机译:空置Cu2-xSe工程纳米颗粒可调LSPR和磁性dual-modal成像引导光热光谱分析治疗癌症

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摘要

The vacancies in the semiconductor nanocrystals not only induce unique properties, but also provide spaces for engineering them with multifunctions by the introduction of other elements. Herein, the vacancy of Cu2-xSe nanoparticles was tuned by doping with magnetic ferric ions (Fe3+) at room temperature, and the position and intensity of the near-infrared localized surface plasmon resonance (LSPR) in the resultant nanostructure can be finely controlled by altering the feeding amount of Fe3+ ions. The results of the density-functional theory (DFT) calculations show that both doping and replacement reactions are favourable. Owing to its tunable near-infrared absorption and magnetic property, the obtained hybrid nanostructure was demonstrated to be a novel nanotheranostic agent for effective deep-tissue photoacoustic imaging, magnetic resonance imaging, and photothermal therapy of cancer.
机译:半导体纳米晶体的空缺不仅引起独特的属性,而且为工程他们提供空间产品描述的介绍元素。纳米粒子被掺杂与磁调谐铁离子在室温下(Fe3 +),和近红外的位置和强度局部表面等离子体共振(LSPR)合成纳米结构可以精确控制通过改变喂养的Fe3 +离子。密度泛函理论(DFT)的结果计算表明,掺杂和置换反应是有利的。其可调近红外吸收和磁性财产,获得的混合纳米结构证明是一个小说nanotheranostic代理有效深层光声成像,磁共振成像和光热光谱分析治疗癌症。

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