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Inne
Luminescent studies of Ln(III) complexes with 4-amino-6-methylpicolinic acid N-oxide at 77K.
Autorzy
Rok wydania
2007
Czasopismo
Numer woluminu
122-123
Strony
221-226
DOI
10.1016/j.jlumin.2006.01.109
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Spectroscopic properties of Ln(III) complexes with 4-amino-6-methylpicolinic acid N-oxide (ampicN–O) were characterized using absorption, fluorescence and phosphorescence spectra of the ligand as well as Eu(III) luminescence (intensity, lifetime measurements and selective excitation spectra in the range of 5D0←7F0 transition) at 77 and 293 K. Based on emission behavior of ampicN–O and its Eu(III) and Gd(III) complexes the energy level of the ligand triplet state, mechanism of the ligand to metal energy transfer has been proposed and a role of the C–T state in this process analyzed. Detailed studies of the Eu(III) selective excitation spectra in the range of 5D0←7F0 transition recorded for Eu/ampicN–O aqueous solution indicated equilibrium of three complex forms: ML, ML2, ML3.
Słowa kluczowe
Ln(III), 4-amino-6-methylpicolinic acid-N-oxide, Complexes, Absorption, Luminescence, Energy transfer
Adres publiczny
https://doi.org/10.1016/j.jlumin.2006.01.109
Strona internetowa wydawcy
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