Conjugates of 8-[2,2’-bipyridinyl]coumarins as Potential Chemosensors for Al3+, Cu2+, Cd2+, Zn2+ Ions: Synthesis and Photophysical Properties
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Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Conjugates of 8-[2,2’-bipyridinyl]coumarins as Potential Chemosensors for Al3+, Cu2+, Cd2+, Zn2+ Ions: Synthesis and Photophysical Properties
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| Автор |
Sharapov, A. D.
Fatykhov, R. F. Khalymbadzha, I. A. Kopchuk, D. S. Nikonov, I. L. Potapova, A. P. Shtaitz, Ya. K. Slepukhin, P. A. |
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| Тематика |
CHEMOSENSORS
COUMARINS 2,2’-BIPYRIDINES PHOTOPHYSICAL PROPERTIES METAL COMPLEXES |
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| Описание |
A new series of 8-[2,2'-bipyridyl]-5,7-dimethoxycoumarins with good yields and high regioselectivity was prepared.
The obtained compound are characterized by λabs and λem in the range of 212–296 and 401-410 nm, respectively, Δλ up to 116 nm, and quantum yields up to 15.0%. 8-[2,2'-bipyridinyl]coumarins demonstrate promising chemosensing properties towards Al3+, Cu2+, Cd2+, Zn2+ ions. Received: 14.11.23. Revised: 19.11.23. Accepted: 19.12.23. Available online: 28.12.23. In this work, we report the synthesis of novel coumarin-bipyridine conjugates using a sequence of C–C coupling reaction between 5,7-dimethoxycoumarins and 3-pyridyl-6-aryl-1,2,4-triazines followed by the Boger reaction with norbornandiene to obtain 8-[2,2'-bipyridyl]-5,7-dimethoxycoumarins. Photophysical properties were investigated for the obtained series of 8-[2,2'-bipyridyl]-5,7-dimethoxycoumarins: absorption and emission wavelength maxima are in the region of 212–296 and 401–410 nm, respectively; Stokes shifts are up to 116 nm, and fluorescence quantum yields are up to 15.0%. It was found that titrating the conjugates with Al3+, Zn2+, and Cd2+ ions results in an increase in the intensity of the emission maxima of the complexes, while the opposite effect was observed in the case of titration with Cu2+ ions. These findings suggest that the studied compounds may be considered as promising chemosensing materials. Finally, a positive solvatochromism of 8-[2,2'-bipyridyl]coumarins and their metal complexes was established. The experimental data are supported by mathematical calculations according to the Lippert-Matagaequation and Kosower diagram. The research was carried out within the framework of the Strategic Academic Leadership Program "Priority-2030" under Measure T, procurement No. PRTS48C4T28.2-23 "Payment of grants for scientific research of the University's research staff", on the topic "Fluorophores based on coumarin framework: synthesis and photophysical properties". The research funding from the Ministry of Science and Higher Education of the Russian Federation (Ural Federal University Program of Development within the Priority-2030 Program) is gratefully acknowledged. |
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| Дата |
2024-01-18T12:45:24Z
2024-01-18T12:45:24Z 2023 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Conjugates of 8-[2,2’-bipyridinyl]coumarins as Potential Chemosensors for Al3+, Cu2+, Cd2+, Zn2+ Ions: Synthesis and Photophysical Properties / A. D. Sharapov, R. F. Fatykhov, I. A. Khalymbadzha, D.y S. Kopchuk, I. L. Nikonov, A. P. Potapova, Ya. K. Shtaitz, P. A. Slepukhin // Chimica Techno Acta. — 2023. — Vol. 10, No. 4. — № 202310417.
2411-1414 http://elar.urfu.ru/handle/10995/129335 https://www.elibrary.ru/item.asp?id=60040560 10.15826/chimtech.2023.10.4.17 |
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| Язык |
en
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| Связанные ресурсы |
Chimica Techno Acta. 2023. Vol. 10. № 4
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| Формат |
application/pdf
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| Издатель |
Уральский федеральный университет
Ural Federal University |
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