Electron Energy Loss Spectra of the Organic Complexes of Europium |
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Authors: | N. A. Borisevich S. M. Kazakov A. V. Kukhto D. V. Murtazaliev T. A. Pavich O. V. Khristoforov |
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Affiliation: | (1) Institute of Molecular and Atomic Physics, National Academy of Sciences of Belarus, 70 F. Skorina Ave., Minsk, 220072, Belarus;(2) Chuvash State University, Cheboksary, Russia |
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Abstract: | In the electron energy loss spectra (EELS) of the organic europium complexes Eu3+ (BTFA)3TPPO and Eu3+(BrBTFA)3TPPO in a gas phase obtained on excitation by monokinetic beams of electrons of different energies in the range 12–50 eV, we have identified the bands associated with the electron transitions S0–S1, S0–S2, and S0–S3. The connection of these transitions with the structural groups of the complexes is established. The addition of the bromine atom to the phenyl ring of diketonate leads to the rise in the relative intensity of the S0–S2 band. The singlettriplet transitions manifest themselves in the region 2.5–3.2 eV and contribute to the S0–S2 band of the electron energy loss spectra. |
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Keywords: | organic complex of europium electron singlet /content/j380481504uhp632/xxlarge8208.gif" alt=" dash" align=" MIDDLE" BORDER=" 0" >triplet transition singlet /content/j380481504uhp632/xxlarge8208.gif" alt=" dash" align=" MIDDLE" BORDER=" 0" >singlet transition electron energy loss spectrum |
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