zhpsЖурнал прикладной спектроскопииZhurnal Prikladnoii Spektroskopii0514-7506B. I. Stepanov Institute of Physics of the National Academy of Scienceszhps-44Research ArticleСтатьиСРАВНИТЕЛЬНЫЙ АНАЛИЗ СПЕКТРОВ ВОЗБУЖДЕНИЯ И ФЛУОРЕСЦЕНЦИИ 3-ГИДРОКСИФЛАВОНА И 2(2'-ГЕТЕРОАРИЛ)-3-ГИДРОКСИ-4H-ХРОМИНА-4COMPARATIVE STUDIES IN THE FLUORESCENCE AND EXCITATION SPECTRA OF 3-HYDROXYFLAVONE AND 2(2'-HETEROARYL)-3-HYDROXY-4H-CHROMEN-4-ONESKaurR. .KaurR. .noemail@neicon.ruKaurK. .KaurK. .noemail@neicon.ruBansalM. .BansalM. .jindal_manisha@yahoo.co.inУниверситет ПенджабаPunjabi University201710032020842219225Copyright © Kaur R..., Kaur K..., Bansal M..., 20202020Kaur R..., Kaur K..., Bansal M...Kaur R..., Kaur K..., Bansal M...Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://zhps.ejournal.by/jour/article/view/44

Изучены спектры поглощения, флуоресценции и возбуждения флуоресценции FHC и THC. Проведено их сравнение со спектрами для 3HF в циклогексане, ацетонитриле и метаноле. Наблюдается формирование анионов в ацетотитриле и метаноле во всех трех флавонолах THC-FHC-3HF в основном состоянии. Поскольку спектры возбуждения и поглощения во всех случаях (включая образование аниона) подобны, можно наблюдать спектры поглощения чистого аниона флавонолов в нейтральных растворителях, непосредственная регистрация которых достаточно проблематична.

The absorption, fluorescence, and excitation spectra of FHC and THC have been studied and compared with 3HF in cyclohexane, acetonitrile, and methanol. Anion formation in acetonitrile and methanol has been observed in all three flavonols in the order THC-FHC-3HF in their ground states. As excitation and absorption spectra are similar in all the cases (including the anion one), it is possible to observe the absorption spectra of the pure anion of the flavonols in neutral solvents, which is difficult to measure directly.

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The authors declare that there are no conflicts of interest present.