Abstract
Luminescence and excitation of luminescence vibronic spectra of europium nitrates Eu(NO 3) 3 · 4SOR 2 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 Eu 3+ 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 5D 0, 5D 1→ 7F 2 transitions of luminescence spectra originated in overlap of different vibronic transitions. Mixing between the 7F 2 electronic state of Eu 3+ and vibronic satellites of 7F 0 electronic state was studied both under conditions of resonance and in case of significant detuning.
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Schedule a callMore From: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
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