Spectroscopic investigation and DFT modelling studies of Eu3+ complex with 1-(2,6-dihydroxyphenyl)ethanone

J Hanuza; M Ptak; R Lisiecki; A Kwocz; E Kucharska; W Ryba-Romanowski; M Mączka; K Hermanowicz; L Macalik

doi:10.1016/j.saa.2018.04.035

Spectroscopic investigation and DFT modelling studies of Eu³⁺ complex with 1-(2,6-dihydroxyphenyl)ethanone

Spectrochim Acta A Mol Biomol Spectrosc. 2018 Jul 5:200:322-329. doi: 10.1016/j.saa.2018.04.035. Epub 2018 Apr 19.

Authors

J Hanuza¹, M Ptak¹, R Lisiecki¹, A Kwocz², E Kucharska³, W Ryba-Romanowski¹, M Mączka¹, K Hermanowicz¹, L Macalik⁴

Affiliations

¹ Institute of Low Temperature and Structure Research, 2 Okólna str., 50-422 Wrocław, Poland.
² Faculty of Chemistry, Wrocław University, F. Joliot-Curie 14 str., 50-383 Wrocław, Poland.
³ Department of Bioorganic Chemistry, Faculty of Chemistry and Food Technology, Wrocław University of Economics, 118/120 Komandorska str., 53-345 Wrocław, Poland.
⁴ Institute of Low Temperature and Structure Research, 2 Okólna str., 50-422 Wrocław, Poland. Electronic address: [email protected].

PMID: 29705410
DOI: 10.1016/j.saa.2018.04.035

Abstract

Eu³⁺ complex with 1-(2,6-dihydroxyphenyl)ethanone in the solid state has been synthesized and characterized by elemental analysis, UV-visible, FT-IR and FT-Raman spectroscopies, powder X-ray diffraction, electron emission under femtosecond laser excitation. The stoichiometry and the formula of the studied complex have been proposed. Its physicochemical properties have been analyzed in terms of the structure and DFT calculations performed for the ligand. The luminescence and dynamics of the excited states depopulation have been studied using femtosecond laser excitation. Spectral and energetic transformation of femtosecond light impulses has been studied and possibility of the energy transfer between the ligand and the Eu³⁺ electron levels has been analyzed.

Keywords: 1-(2,6-Dihydroxyphenyl)ethanone; DFT calculations; Eu(3+) complex; FT-IR and FT-Raman; Femtosecond laser excitation; Optical absorption and emission spectra.