Dynamically tuning near-infrared-induced photothermal performances of TiO2 nanocrystals by Nb doping for imaging-guided photothermal therapy of tumors
Dynamically tuning near-infrared-induced photothermal performances of TiO2 nanocrystals by Nb doping for imaging-guided photothermal therapy of tumors
复制标题
通过 Nb 掺杂动态调节 TiO2 纳米晶体的近红外诱导光热性能，用于成像引导肿瘤光热治疗
DOI：
10.1039/c7nr02180a
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发表时间：
2017-07-14
期刊：
影响因子：
6.7
通讯作者：
Chen, Zhigang
中科院分区：
文献类型：
--
作者：
Yu, Nuo;Hu, Yong;Chen, Zhigang
传统的宽带隙半导体可以吸收UV/可见光，但在近红外（NIR）区域没有光吸收带，导致其难以用作NIR响应剂。以TiO 2为例，我们报道了通过Nb掺杂策略，从紫外响应的TiO 2纳米晶到具有新出现的近红外吸收带的蓝色TiO 2纳米晶的调谐。由于有效结合Nb 5+离子产生了大量自由电子，因此局域表面等离子体共振应该产生强的近红外带（
Conventional wide bandgap semiconductors can absorb UV/visible light but have no photoabsorption band in the near-infrared (NIR) region, leading to difficulty in their use as NIR-responsive agents. With TiO2 as an example, we report the tuning from UV-responsive TiO2 nanocrystals to blue TiO2 nanocrystals with newly appeared NIR absorption band through the Nb-doping strategy. A strong NIR band should result from the localized surface plasmon resonances due to the considerable free electrons originating from the efficient incorporation of Nb5+ ions (