Effect of the Irradiation Conditions on the Yield of Hydrogen Peroxide in Frozen Aqueous Solutions of Adenine Derivatives

Comparative results are presented from detecting hydrogen peroxide (H 2 O 2 ) in aqueous solutions of adenine derivatives irradiated at 77 K in the near-UV range of wavelengths (λ = 260–400 and 290–460 nm). It is shown that the efficiency of H 2 O 2 formation, estimated from the ratio of [H 2 O 2 ]...

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Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2018-10, Vol.92 (10), p.2065-2074
Main Authors: Lozinova, T. A., Lobanov, A. V., Lander, A. V.
Format: Article
Language:English
Subjects:
Aqueous solutions
Chemistry
Chemistry and Materials Science
Derivatives
Hydrogen peroxide
Irradiation
Photochemistry and Magnetochemistry
Photoexcitation
Physical Chemistry
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Summary:Comparative results are presented from detecting hydrogen peroxide (H 2 O 2 ) in aqueous solutions of adenine derivatives irradiated at 77 K in the near-UV range of wavelengths (λ = 260–400 and 290–460 nm). It is shown that the efficiency of H 2 O 2 formation, estimated from the ratio of [H 2 O 2 ] to the integral intensity of EPR signals observed in the irradiated samples, grew in the latter case. Based on the literature data, this increase is assumed to be due to specific features of the photoexcitation of aggregates of adenine derivatives that form in frozen aqueous solutions.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024418100175