International Conference Physics.SPb/2025
Nanophotonics

Isolation of homogeneous fluorophores obtained at different stages of hydrothermal synthesis of carbon dots

K. A. Laptinskiy^ab, A. M. Vervald^a, A. A. Korepanova^a, T. A. Dolenko<sup>a

a</sup> Lomonosov Moscow State University, Faculty of Physics
^b Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics

Abstract: The isolation of carbon dot fractions obtained at different stages of hydrothermal synthesis from citric acid and ethylenediamine is discussed. Gel electrophoresis was used for the isolation, resulting in the isolation of up to five different carbon dot fractions formed at the same stage of hydrothermal synthesis. The optical properties of each isolated fraction were analyzed using photoluminescence spectroscopy, photometry, time-resolved spectroscopy, and IR absorption spectroscopy.

Keywords: carbon dots, fractionation, electrophoresis, fluorophores.

Received: 05.05.2025
Revised: 07.07.2025
Accepted: 24.10.2025

DOI: 10.61011/OS.2025.10.61949.8041-25