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Hanuza J, Godlewska P, Lisiecki R, Ryba-Romanowski W, Kadłubański P, Lorenc J, Łukowiak A, Macalik L, Gerasymchuk Y, Legendziewicz J. DFT study of electron absorption and emission spectra of pyramidal LnPc(OAc) complexes of some lanthanide ions in the solid state. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 196:202-208. [PMID: 29454249 DOI: 10.1016/j.saa.2018.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 12/06/2017] [Accepted: 01/03/2018] [Indexed: 06/08/2023]
Abstract
The electron absorption and emission spectra were measured for the pyramidal LnPc(OAc) complexes in the solid state and co-doped in silica glass, where Ln=Er, Eu and Ho. The theoretical electron spectra were determined from the quantum chemical DFT calculation using four approximations CAM-B3LYP/LANL2DZ, CAM-B3LYP/CC-PVDZ, B3LYP/LANL2DZ and B3LYP/CC-PVDZ. It was shown that the best agreement between the calculated and experimental structural parameters and spectroscopic data was reached for the CAM-B3LYP/LANL2DZ model. The emission spectra were measured using the excitations both in the ligand and lanthanide absorption ranges. The possibility of energy transfer between the phthalocyanine ligand and excited states of lanthanide ions was discussed. It was shown that the back energy transfer from metal states to phthalocyanine state is responsible for the observed emission of the studied complexes both in the polycrystalline state and silica glass.
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Affiliation(s)
- J Hanuza
- Institute of Low Temperature and Structure Research, 2 Okólna str., 50-422 Wrocław, Poland
| | - P Godlewska
- Department of Bioorganic Chemistry, Institute of Chemistry and Food Technology, Faculty of Engineering and Economy, Wrocław University of Economics, Poland.
| | - R Lisiecki
- Institute of Low Temperature and Structure Research, 2 Okólna str., 50-422 Wrocław, Poland
| | - W Ryba-Romanowski
- Institute of Low Temperature and Structure Research, 2 Okólna str., 50-422 Wrocław, Poland
| | - P Kadłubański
- Institute of Low Temperature and Structure Research, 2 Okólna str., 50-422 Wrocław, Poland
| | - J Lorenc
- Department of Bioorganic Chemistry, Institute of Chemistry and Food Technology, Faculty of Engineering and Economy, Wrocław University of Economics, Poland
| | - A Łukowiak
- Institute of Low Temperature and Structure Research, 2 Okólna str., 50-422 Wrocław, Poland
| | - L Macalik
- Institute of Low Temperature and Structure Research, 2 Okólna str., 50-422 Wrocław, Poland
| | - Yu Gerasymchuk
- Institute of Low Temperature and Structure Research, 2 Okólna str., 50-422 Wrocław, Poland
| | - J Legendziewicz
- Faculty of Chemistry, Wrocław University, F. Joliot-Curie 14 str., 50-383 Wrocław, Poland
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