Photophysical Properties of Eu<sup>3+</sup> β-Diketonates with Extended π-Conjugation in the Aromatic Moiety
The influence of the degree of π-conjugation in biaroylmethane ligands upon Eu<sup>3+</sup> luminescence efficiency in corresponding neutral tris-complexes was investigated in depth. The data obtained by both steady-state and time-resolved luminescence measurements gave an inside into el...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Inorganics |
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| Online Access: | https://www.mdpi.com/2304-6740/11/1/15 |
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| author | Vladislav M. Korshunov Alisia V. Tsorieva Victoria E. Gontcharenko Sergey R. Zanizdra Mikhail T. Metlin Trofim A. Polikovskiy Ilya V. Taydakov |
| author_facet | Vladislav M. Korshunov Alisia V. Tsorieva Victoria E. Gontcharenko Sergey R. Zanizdra Mikhail T. Metlin Trofim A. Polikovskiy Ilya V. Taydakov |
| author_sort | Vladislav M. Korshunov |
| collection | DOAJ |
| description | The influence of the degree of π-conjugation in biaroylmethane ligands upon Eu<sup>3+</sup> luminescence efficiency in corresponding neutral tris-complexes was investigated in depth. The data obtained by both steady-state and time-resolved luminescence measurements gave an inside into electronic energy transfer mechanisms in the abovementioned complexes. It was shown that extension of the π-system in the naphthalene moiety in comparison to the phenyl one lead to a substantial decrease of both the S<sub>1</sub> and T<sub>1</sub> energy of the corresponding symmetrical β-diketones, which, in turn, led to a decrease of the total quantum yield of respective Eu<sup>3+</sup> complexes. The obtained results are of interest for the rational design of highly luminescent complexes with NIR-emitting lanthanides, as the resonant levels energies are low and can hardly be sensitized by common ligands. |
| first_indexed | 2024-03-09T12:16:11Z |
| format | Article |
| id | doaj.art-bf10bc639c3a4ee8b82d20aaa0b2656a |
| institution | Directory Open Access Journal |
| issn | 2304-6740 |
| language | English |
| last_indexed | 2024-03-09T12:16:11Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Inorganics |
| spelling | doaj.art-bf10bc639c3a4ee8b82d20aaa0b2656a2023-11-30T22:47:06ZengMDPI AGInorganics2304-67402022-12-011111510.3390/inorganics11010015Photophysical Properties of Eu<sup>3+</sup> β-Diketonates with Extended π-Conjugation in the Aromatic MoietyVladislav M. Korshunov0Alisia V. Tsorieva1Victoria E. Gontcharenko2Sergey R. Zanizdra3Mikhail T. Metlin4Trofim A. Polikovskiy5Ilya V. Taydakov6P. N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy Prospect, 119991 Moscow, RussiaP. N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy Prospect, 119991 Moscow, RussiaP. N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy Prospect, 119991 Moscow, RussiaP. N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy Prospect, 119991 Moscow, RussiaP. N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy Prospect, 119991 Moscow, RussiaP. N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy Prospect, 119991 Moscow, RussiaP. N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy Prospect, 119991 Moscow, RussiaThe influence of the degree of π-conjugation in biaroylmethane ligands upon Eu<sup>3+</sup> luminescence efficiency in corresponding neutral tris-complexes was investigated in depth. The data obtained by both steady-state and time-resolved luminescence measurements gave an inside into electronic energy transfer mechanisms in the abovementioned complexes. It was shown that extension of the π-system in the naphthalene moiety in comparison to the phenyl one lead to a substantial decrease of both the S<sub>1</sub> and T<sub>1</sub> energy of the corresponding symmetrical β-diketones, which, in turn, led to a decrease of the total quantum yield of respective Eu<sup>3+</sup> complexes. The obtained results are of interest for the rational design of highly luminescent complexes with NIR-emitting lanthanides, as the resonant levels energies are low and can hardly be sensitized by common ligands.https://www.mdpi.com/2304-6740/11/1/15europiumcoordination compoundsaromatic β-diketonesluminescenceenergy transferπ-conjugation |
| spellingShingle | Vladislav M. Korshunov Alisia V. Tsorieva Victoria E. Gontcharenko Sergey R. Zanizdra Mikhail T. Metlin Trofim A. Polikovskiy Ilya V. Taydakov Photophysical Properties of Eu<sup>3+</sup> β-Diketonates with Extended π-Conjugation in the Aromatic Moiety Inorganics europium coordination compounds aromatic β-diketones luminescence energy transfer π-conjugation |
| title | Photophysical Properties of Eu<sup>3+</sup> β-Diketonates with Extended π-Conjugation in the Aromatic Moiety |
| title_full | Photophysical Properties of Eu<sup>3+</sup> β-Diketonates with Extended π-Conjugation in the Aromatic Moiety |
| title_fullStr | Photophysical Properties of Eu<sup>3+</sup> β-Diketonates with Extended π-Conjugation in the Aromatic Moiety |
| title_full_unstemmed | Photophysical Properties of Eu<sup>3+</sup> β-Diketonates with Extended π-Conjugation in the Aromatic Moiety |
| title_short | Photophysical Properties of Eu<sup>3+</sup> β-Diketonates with Extended π-Conjugation in the Aromatic Moiety |
| title_sort | photophysical properties of eu sup 3 sup β diketonates with extended π conjugation in the aromatic moiety |
| topic | europium coordination compounds aromatic β-diketones luminescence energy transfer π-conjugation |
| url | https://www.mdpi.com/2304-6740/11/1/15 |
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