光致发光胶体碳点的光热和射频诱导加热
Photo- and Radiofrequency-Induced Heating of Photoluminescent Colloidal Carbon Dots.
作者信息
Mussabek Gauhar, Zhylkybayeva Nazym, Lysenko Ivan, Lishchuk Pavlo O, Baktygerey Saule, Yermukhamed Dana, Taurbayev Yerzhan, Sadykov Gani, Zaderko Alexander N, Skryshevsky Valeriy A, Lisnyak Vladyslav V, Lysenko Vladimir
机构信息
Institute of Information and Computational Technologies, 125 Pushkin Str., Almaty 050000, Kazakhstan.
Faculty of Physics and Technology, Al-Farabi Kazakh National University, 71 al-Farabi Ave., Almaty 050040, Kazakhstan.
出版信息
Nanomaterials (Basel). 2022 Jul 15;12(14):2426. doi: 10.3390/nano12142426.
Nitrogen- and oxygen-containing carbon nanoparticles (O, N-CDs) were prepared by a facile one-step solvothermal method using urea and citric acid precursors. This method is cost-effective and easily scalable, and the resulting O, N-CDs can be used without additional functionalization and sample pretreatment. The structure of O, N-CDs was characterized by TEM, AFM, Raman, UV-vis, and FTIR spectroscopies. The obtained O, N-CDs with a mean diameter of 4.4 nm can be easily dispersed in aqueous solutions. The colloidal aqueous solutions of O, N-CDs show significant photothermal responses under red-IR and radiofrequency (RF) irradiations. The as-prepared O, N-CDs have a bright temperature-dependent photoluminescence (PL). PL/PLE spectral maps were shown to be used for temperature evaluation purposes in the range of 30-50 °C. In such a way, the O, N-CDs could be used for biomedicine-related applications such as hyperthermia with simultaneous temperature estimation with PL imaging.
采用尿素和柠檬酸前驱体，通过简便的一步溶剂热法制备了含氮和氧的碳纳米颗粒（O，N-CDs）。该方法具有成本效益且易于扩大规模，所得的O，N-CDs无需额外功能化和样品预处理即可使用。通过透射电子显微镜（TEM）、原子力显微镜（AFM）、拉曼光谱、紫外可见光谱和傅里叶变换红外光谱（FTIR）对O，N-CDs的结构进行了表征。所制备的平均直径为4.4 nm的O，N-CDs能够很容易地分散在水溶液中。O，N-CDs的胶体水溶液在红外和射频（RF）照射下表现出显著的光热响应。所制备的O，N-CDs具有明亮的温度依赖性光致发光（PL）。PL/PLE光谱图可用于30-50°C范围内的温度评估。通过这种方式，O，N-CDs可用于生物医学相关应用，如热疗并同时通过PL成像进行温度估计。
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