FLUORESCENCE QUENCHING OF AQUAIONS [Се(Н2О)n]3+ BY GRAPHENE OXIDE
Abstract
Measurements of the relative fluorescence intensity and the lifetime of the excited states of the Ce3+ ions in an aqueous solution of cerium nitrate at various graphene oxide concentrations have shown that under the optical excitation of Ce3+ static quenching of fluorescence by graphene oxide takes place. The Stern-Volmer association constant of aquacomplex cerium with graphene oxide is measured to be 24.7 L/g. This value is much lower than the constants for cationic dyes of rhodamines and metal cations and is explained by the presence of negative charges on the interacting particles.
About the Authors
A. S. Kruhlik
Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus
Belarus
Minsk, 220072
Belarus
Minsk, 220072
G. E. Malashkevich
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
68-2 Nezavisimosti Prosp., Minsk, 220072
Belarus
68-2 Nezavisimosti Prosp., Minsk, 220072
V. A. Povedailo
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
68-2 Nezavisimosti Prosp., Minsk, 220072
Belarus
68-2 Nezavisimosti Prosp., Minsk, 220072
B. V. Ronishenko
Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus
Belarus
Minsk, 220072
Belarus
Minsk, 220072
V. A. Tolkachev
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
68-2 Nezavisimosti Prosp., Minsk, 220072
Belarus
68-2 Nezavisimosti Prosp., Minsk, 220072
D. L. Yakovlev
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
68-2 Nezavisimosti Prosp., Minsk, 220072
Belarus
68-2 Nezavisimosti Prosp., Minsk, 220072
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Review
For citations:
Kruhlik A.S., Malashkevich G.E., Povedailo V.A., Ronishenko B.V., Tolkachev V.A., Yakovlev D.L. FLUORESCENCE QUENCHING OF AQUAIONS [Се(Н2О)n]3+ BY GRAPHENE OXIDE. Zhurnal Prikladnoii Spektroskopii. 2019;86(3):347-352. (In Russ.)
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