Repozytorium
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Kolekcje
Inne
Spectroscopy of Eu3+ and Tb3+ pyridine- and pyrazine-2-carboxylates.
Autorzy
Rok wydania
2008
Czasopismo
Journal of Alloys and Compounds
Numer woluminu
451
Strony
149-152
DOI
10.1016/j.jallcom.2007.04.125
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The luminescence excitation, luminescence and vibrational spectra of europium and terbium pyridine- and pyrazine-2-carboxylates were investigated. A special attention was paid to spectroscopic characterization of tetrakis-compounds, MLn(Lig)4·H2O, where M = NH4, Na; Ln = Eu, Tb; Lig = pyridine-2-carboxylate and pyrazine-2-carboxylate anions. The features of the spectra indicated a decrease of the interaction of carboxylic groups and an increase of the donor–acceptor interaction of coordinated nitrogen atoms with the lanthanide ions in different tetrakis-salts in comparison with the tris-salts. This is accompanied by clear manifestation of the 4f–5d electronic transitions in the excitation spectra of terbium salts.
Słowa kluczowe
Eu3+, Tb3+, Excitation spectra, Luminescence spectra, Vibrational spectra, Pyridine-2-carboxylate, Pyrazine-2-carboxylate
Adres publiczny
https://doi.org/10.1016/j.jallcom.2007.04.125
Strona internetowa wydawcy
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