Activation of molecular oxygen by triplet states of S,N-doped carbon dots

被引：1
|
作者：
Ibrayev, N. [1 ,2 ]
Seliverstova, E. [1 ]
Amanzholova, G. [1 ]
机构：
[1] Buketov Karaganda Univ, Inst Mol Nanophoton, Karaganda 100024, Kazakhstan
[2] Karagandy Univ, Univ Skaya Str 28, Karaganda 100024, Kazakhstan
来源：
CHEMICAL PHYSICS LETTERS | 2023年 / 833卷
关键词：
N-doped carbon dots; Phosphorescence; Singlet oxygen; Plasmon effect; QUANTUM DOTS; FLUORESCENCE; GENERATION; PHOSPHORESCENCE; NANOPARTICLES; MECHANISM; SOLVENT; LIGHT;
D O I：
10.1016/j.cplett.2023.140947
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
S,N-doped carbon dots were synthesized and they were considered as activators of molecular oxygen, as evi-denced 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 O-2((3)Sigma(-)(g)) molecules were added to the solution, the efficiency of which depends on the ratio of concentrations of triplet carbon dots and O-2((1)Delta(g)) singlet molecules. In the presence of plasmonic nanoparticles of Au the phosphorescence of singlet oxygen was increased.
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页数：8
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