Activation of molecular oxygen by triplet states of S,N-doped carbon dots
Ibrayev N. Seliverstova E. Amanzholova G.
16 December 2023Elsevier B.V.
Chemical Physics Letters
2023#833
S,N–doped carbon dots were synthesized and they were considered as activators of molecular oxygen, as evidenced by the observed phosphorescence of singlet oxygen upon excitation of solutions in the absorption band of carbon dots. The process of singlet–triplet annihilation develops when O2(3Σg-) molecules were added to the solution, the efficiency of which depends on the ratio of concentrations of triplet carbon dots and O2(1Δg) singlet molecules. In the presence of plasmonic nanoparticles of Au the phosphorescence of singlet oxygen was increased.
Phosphorescence , Plasmon effect , S,N-doped carbon dots , Singlet oxygen
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Institute of Molecular Nanophotonics, Buketov Karaganda University, Karaganda, 100024, Kazakhstan
Institute of Molecular Nanophotonics
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