Tsaryuk Vera I., Zhuravlev Konstantin P. Peculiarities of the luminescence excitation of europium and terbium substituted benzoates. Journal of Luminescence , 2021 , 237. р. 118159. ISSN 00222313
Полный текст не доступен из этого репозитория.Аннотация
A comparative analysis of the spectroscopic characteristics of a large number of benzoates, nitro-, methoxy-, amino- and hydroxybenzoates of europium and terbium including those with an ancillary 1,10-phenanthroline ligand is presented. The effect of the stepwise introduction of substituents in the benzoate anion on the Eu3+ and Tb3+ luminescence excitation spectra and luminescence intensity is discussed. A combination of donor and acceptor substituents in the aromatic ring of lanthanide benzoates makes it possible to obtain intense luminophores with an excitation band extended to the visible region. Examples of such luminophores are europium nitrosalicylates having an UV-green excitation band caused by the intraligand charge transfer (ILCT). The participation of low-energy ligand-metal charge transfer (LMCT) states in the quenching of luminescence of europium substituted benzoates, in particular, amino- and hydroxybenzoates is considered. It was shown that the donor-acceptor properties of substituents and electronic substitution effects play an important role in the excitation energy transfer to the Ln3+ ion in lanthanide benzoates.
| 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/8966 |
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