ESR and luminescence spectral properties of europium compounds with trifluoroacetic acid

被引：1
|
作者：
Kalinovskaya, IV [1 ]
Zadorozhnaya, AN [1 ]
Kuryavyi, VG [1 ]
Karasev, VE [1 ]
机构：
[1] Russian Acad Sci, Inst Chem, Far E Div, Vladivostok 690022, Russia
来源：
EPR IN THE 21ST CENTURY: BASICS AND APPLICATIONS TO MATERIAL, LIFE AND EARTH SCIENCES | 2002年
关键词：
D O I：
10.1016/B978-044450973-4/50050-0
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Europium trifluoroacetates of the composition Eu(TFA)(3)2DnH(2)O, where TFA trifluoroacetic acid anion, D - 1,10-phenanthroline (phen), n=1; 2,2 '- bipyridil (bipy), n=3 were proven to be resistant to UV - light in crystalline state and in polyethylene matrix. Increase of luminescent emission of europium at irradiation by UV - light was revealed. The analysis of X -ray, ESR, IR and luminescence spectra of photochemical process products was carried out. The ESR study showed that increase of the luminescent emission of europium complexes is symbiosisly to increase of the contents of bipyridil anion - radical. The ESR and IR spectroscopy data allow to make the conclusion about the mechanism of the increase of europium luminescent emission in trifluoroacetates with nitrogen-containing neutral ligands.
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页码：276 / 281
页数：6
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