Elsevier
Chemical Physics Letters
,  volume 868 ,  pages 141957

Barbituric acid derivative supramolecular assembly as a matrix for oxygen-sensitive photodriven formation of superoxide and carbon-centered radicals

Alexandra A. Timralieva 1
, 
Natalia A. Chumakova 2, 3
, 
Alexander V Fionov 2
, 
E.A. Konstantinova 4
, 
Ruslan B Zaripov 5
, 
Maxim A. Demekhin 1
, 
Maxim E. Radchenko 1
, 
Alexander S. Novikov 1
, 
Sergey O Travin 3
, 
Alexander I. Kokorin 1, 3, 6
, 
Ekaterina V. Skorb 1
1
 
2
 
3
 
4
 
5
 
6
 
Publication type: Journal Article
Publication date: 2025-06-01
Elsevier
scimago Q2
wos Q2
SJR: 0.546
CiteScore: 5.9
Impact factor: 3.1
ISSN: 00092614, 18734448
Abstract
Supramolecular system of native barbituric acid and its 1,3-dimethyl derivative with melamine was studied using continuous-wave Q-band EPR spectroscopy. For separation of EPR signals, a special mathematical method was developed and applied. One axial symmetry signal and three singlet signals were detected and interpreted as belonging to superoxide radical and C-centered radicals, correspondingly. Radical activity of the system and predominance of specific radical centers were found to depend on compounds ratio, pH and light irradiation as well as samples storage time and oxygen presence. Quantum chemical calculations were performed to propose the localization of C-centered radicals in both supramolecular systems.
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Timralieva A. A. et al. Barbituric acid derivative supramolecular assembly as a matrix for oxygen-sensitive photodriven formation of superoxide and carbon-centered radicals // Chemical Physics Letters. 2025. Vol. 868. p. 141957.
GOST all authors (up to 50) Copy
Timralieva A. A., Chumakova N. A., Fionov A. V., Konstantinova E., Zaripov R. B., Demekhin M. A., Radchenko M. E., Novikov A. S., Travin S. O., Kokorin A. I., Skorb E. V. Barbituric acid derivative supramolecular assembly as a matrix for oxygen-sensitive photodriven formation of superoxide and carbon-centered radicals // Chemical Physics Letters. 2025. Vol. 868. p. 141957.
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TY - JOUR
DO - 10.1016/j.cplett.2025.141957
UR - https://linkinghub.elsevier.com/retrieve/pii/S0009261425000971
TI - Barbituric acid derivative supramolecular assembly as a matrix for oxygen-sensitive photodriven formation of superoxide and carbon-centered radicals
T2 - Chemical Physics Letters
AU - Timralieva, Alexandra A.
AU - Chumakova, Natalia A.
AU - Fionov, Alexander V
AU - Konstantinova, E.A.
AU - Zaripov, Ruslan B
AU - Demekhin, Maxim A.
AU - Radchenko, Maxim E.
AU - Novikov, Alexander S.
AU - Travin, Sergey O
AU - Kokorin, Alexander I.
AU - Skorb, Ekaterina V.
PY - 2025
DA - 2025/06/01
PB - Elsevier
SP - 141957
VL - 868
SN - 0009-2614
SN - 1873-4448
ER -
BibTex
Cite this
BibTex (up to 50 authors) Copy
@article{2025_Timralieva,
author = {Alexandra A. Timralieva and Natalia A. Chumakova and Alexander V Fionov and E.A. Konstantinova and Ruslan B Zaripov and Maxim A. Demekhin and Maxim E. Radchenko and Alexander S. Novikov and Sergey O Travin and Alexander I. Kokorin and Ekaterina V. Skorb},
title = {Barbituric acid derivative supramolecular assembly as a matrix for oxygen-sensitive photodriven formation of superoxide and carbon-centered radicals},
journal = {Chemical Physics Letters},
year = {2025},
volume = {868},
publisher = {Elsevier},
month = {jun},
url = {https://linkinghub.elsevier.com/retrieve/pii/S0009261425000971},
pages = {141957},
doi = {10.1016/j.cplett.2025.141957}
}