Zhuravlev K. P., Tsaryuk V. I. Role of LMCT states in luminescence excitation processes in europium indolecarboxylates, Optics and Spectroscopy. Optics and Spectroscopy , 2022 , 130 (1). С. 115-122. ISSN 2782-6694
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Аннотация
The luminescence excitation energy transfer in europium and terbium indole-3-carboxylates, indole-3-acetates and indole-3-propionates as well as ternary indolecarboxylates containing 1,10-phenanthroline and 2,2'-bipyridine molecules have been studied. The luminescence excitation spectra, the lifetimes of the 5D0 (Eu3+) and 5D4 (Tb3+) states, and the luminescence intensity are analyzed. The decisive role of ligand-metal charge transfer (LMCT) states in the quenching of the luminescence of europium aromatic carboxylates containing a π-excessive pyrrole or indole fragment is demonstrated. Most europium compounds are characterized by quenching due to the depopulation of the 5D0 state of the Eu3+ ion through the low-energy LMCT state. But in some ternary compounds, the LMCT state being of higher energy participates in the nonradiative depopulation of the excited electronic states of the ligand.
| Тип объекта: | Статья |
|---|---|
| Авторы на русском. ОБЯЗАТЕЛЬНО ДЛЯ АНГЛОЯЗЫЧНЫХ ПУБЛИКАЦИЙ!: | В.И. Царюк, К.П. Журавлев |
| Подразделения (можно выбрать несколько, удерживая Ctrl): | 215 лаб. проблем субмикронной технологии |
| URI: | http://cplire.ru:8080/id/eprint/9297 |
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Role of LMCT states in luminescence excitation processes in europium indolecarboxylates, Optics and Spectroscopy. (deposited 25 Окт 2023 11:45)
- Role of LMCT states in luminescence excitation processes in europium indolecarboxylates, Optics and Spectroscopy. (deposited 26 Окт 2023 15:10) [В настоящее время Отображен]
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