Vibronic interaction in europium nitrates Eu(NO3)3 x 4SOR2.
Luminescence and excitation of luminescence vibronic spectra of europium nitrates Eu(NO3)3 x 4SOR2 containing sulphoxide derivatives were obtained and analysed. Some factors influencing the intensity distribution in vibronic sidebands are discussed. Significant variation of the intensity distribution in antiStokes sidebands of Eu3+ electronic transitions in series of nitrates results from the difference in effective charges on coordinated oxygen atoms of ligands. Another important detail of the vibronic spectra is a redistribution of intensity in the region of 5D0, 5D1-->7F2 transitions of luminescence spectra originated in overlap of different vibronic transitions. Mixing between the 7F2 electronic state of Eu3+ and vibronic satellites of 7F0 electronic state was studied both under conditions of resonance and in case of significant detuning.
Tsaryuk
V I
VI
Molecular Engineering Laboratory, Institute of Radioengineering and Electronics of RAS, Fryazino Moscow reg., Russia. vit225@ire216.msk.su
Savchenko
V D
VD
Zolin
V F
VF
Kudryashova
V A
VA
D005063:Europium / Q000737:chemistry*; D049449:Luminescence; D009566:Nitrates / Q000737:chemistry; D013057:Spectrum Analysis
D009566:Nitrates; D005063:Europium