Photo- and Radiofrequency-Induced Heating of Photoluminescent Colloidal Carbon Dots

Gauhar Mussabek; Nazym Zhylkybayeva; Ivan Lysenko; Pavlo O Lishchuk; Saule Baktygerey; Dana Yermukhamed; Yerzhan Taurbayev; Gani Sadykov; Alexander N Zaderko; Valeriy A Skryshevsky; Vladyslav V Lisnyak; Vladimir Lysenko

doi:10.3390/nano12142426

Photo- and Radiofrequency-Induced Heating of Photoluminescent Colloidal Carbon Dots

Nanomaterials (Basel). 2022 Jul 15;12(14):2426. doi: 10.3390/nano12142426.

Authors

Gauhar Mussabek^{1

2}, Nazym Zhylkybayeva^{1

2}, Ivan Lysenko³, Pavlo O Lishchuk^{3

4}, Saule Baktygerey^{1

2}, Dana Yermukhamed^{1

2}, Yerzhan Taurbayev^{1

2}, Gani Sadykov¹, Alexander N Zaderko^{4

5}, Valeriy A Skryshevsky^{4

5}, Vladyslav V Lisnyak^{1

6}, Vladimir Lysenko⁷

Affiliations

¹ Institute of Information and Computational Technologies, 125 Pushkin Str., Almaty 050000, Kazakhstan.
² Faculty of Physics and Technology, Al-Farabi Kazakh National University, 71 al-Farabi Ave., Almaty 050040, Kazakhstan.
³ Faculty of Physics, Taras Shevchenko National University of Kyiv, 64 Volodymyrska Street, 01601 Kyiv, Ukraine.
⁴ Corporation Science Park, Taras Shevchenko National University of Kyiv, 60 Volodymyrska Street, 01033 Kyiv, Ukraine.
⁵ Institute of High Technologies, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Str., 01601 Kyiv, Ukraine.
⁶ Chemical Faculty, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Str., 01601 Kyiv, Ukraine.
⁷ Light Matter Institute UMR-5306, Claude Bernard University of Lyon/CNRS, Université de Lyon, 69622 Villeurbanne, France.

Abstract

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.

Keywords: O, N-containing CDs; nanocolloids for photothermal and radiofrequency therapy; photo- and radiofrequency-induced heating; photoluminescent thermometry; photothermal effects.

Abstract

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