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Charge transfer bands in the Eu3+ luminescence excitation spectra of isomeric europium pyridine-dicarboxylates.
Autorzy
Rok wydania
2002
Czasopismo
Numer woluminu
44
Strony
1440-1444
DOI
10.1134/1.1501333
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
A ligand–cation charge transfer band was observed in the region of 360–400 nm in the Eu3+ luminescence
excitation spectrum of europium 3,4-pyridine-dicarboxylates, but was absent in the spectra of europium 2,6- and 2,3-pyridine-dicarboxylates. This band is due to noticeable energy transfer through a charge transfer state formed owing to the high polarizability of the ligand in the former compound. Energy transfer through the excited ligand–lanthanide charge-transfer state can explain the well-known effect of luminescence quenching by redox-sensitive lanthanide ions.
Adres publiczny
https://doi.org/10.1134/1.1501333
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