Photo-induced synthesis of molybdenum oxide quantum dots for surface-enhanced Raman scattering and photothermal therapy.,Journal of Materials Chemistry B

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Photo-induced synthesis of molybdenum oxide quantum dots for surface-enhanced Raman scattering and photothermal therapy.
Journal of Materials Chemistry B ( IF 6.1 ) Pub Date : 2020-01-15 , DOI: 10.1039/c9tb02102g
Haihong Yu ₁ , Zhengfei Zhuang ₁ , Dongling Li ₁ , Yanxian Guo ₁ , Yang Li ₁ , Huiqing Zhong ₁ , Honglian Xiong ₂ , Zhiming Liu ₁ , Zhouyi Guo ₁

Affiliation

By means of a simple and photo-induced method, four colors of molybdenum oxide quantum dots (MoOx QDs) have been synthesized, using Mo(CO)6 as the structural guiding agent and molybdenum source. The as-prepared MoOx QDs display diverse optical properties due to the different configurations of oxygen vacancies in various nanostructures. Among them, crystalline molybdenum dioxide (MoO2) with a deep blue color shows the most intense localized surface plasmon resonance effect in the near-infrared (NIR) region. The strong NIR absorption endows MoO2 QDs with a high photothermal conversion efficiency of 66.3%, enabling broad prospects as a photo-responsive nanoagent for photothermal therapy of cancer. Moreover, MoO2 QDs can also serve as a novel semiconductor substrate for ultrasensitive surface-enhanced Raman scattering (SERS) analysis of aromatic molecules, amino acids and antibiotics, with SERS performance comparable to that of noble metal-based substrates. The therapeutic applications of MoO2 QDs open up a new avenue for tumor nanomedicine.

中文翻译：

光致合成氧化钼量子点的表面增强拉曼散射和光热疗法。

通过一种简单的光诱导方法，使用Mo（CO）6作为结构引导剂和钼源，合成了四种颜色的氧化钼量子点（MoOx QD）。由于各种纳米结构中氧空位的不同构型，因此制备的MoOx QD显示出多种光学特性。其中，具有深蓝色的结晶二氧化钼（MoO2）在近红外（NIR）区域显示出最强烈的局部表面等离子体共振效应。强大的NIR吸收能力使MoO2 QD具有66.3％的高光热转化效率，作为光响应纳米剂用于癌症的光热疗法具有广阔的前景。此外，MoO2 QD还可以用作新型半导体衬底，用于对芳香族分子，氨基酸和抗生素进行超灵敏的表面增强拉曼散射（SERS）分析，其SERS性能可与基于贵金属的衬底媲美。MoO2 QD的治疗应用为肿瘤纳米医学开辟了新途径。

更新日期：2020-02-13

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