Photo- and Radiofrequency-Induced Heating of Photoluminescent Colloidal Carbon Dots
Mussabek G. Zhylkybayeva N. Lysenko I. Lishchuk P.O. Baktygerey S. Yermukhamed D. Taurbayev Y. Sadykov G. Zaderko A.N. Skryshevsky V.A. Lisnyak V.V. Lysenko V.
July 2022MDPI
Nanomaterials
2022#12Issue 14
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.
nanocolloids for photothermal and radiofrequency therapy , O, N-containing CDs , photo- and radiofrequency-induced heating , photoluminescent thermometry , photothermal effects
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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
Faculty of Physics, Taras Shevchenko National University of Kyiv, 64 Volodymyrska Street, Kyiv, 01601, Ukraine
Corporation Science Park, Taras Shevchenko National University of Kyiv, 60 Volodymyrska Street, Kyiv, 01033, Ukraine
Institute of High Technologies, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Str., Kyiv, 01601, Ukraine
Chemical Faculty, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Str, Kyiv, 01601, Ukraine
Light Matter Institute, UMR-5306, Claude Bernard University of Lyon/CNRS, Université de Lyon, Villeurbanne, 69622, France
Institute of Information and Computational Technologies
Faculty of Physics and Technology
Faculty of Physics
Corporation Science Park
Institute of High Technologies
Chemical Faculty
Light Matter Institute
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