Redox-Modulations of Photophysical and Single-molecule Magnet Properties in Ytterbium Complexes Involving Extended-TTF Triads
The reaction between the 2,2’-benzene-1,4-diylbis(6-hydroxy-4,7-di-<i>tert</i>-butyl-1,3-benzodithiol-2-ylium-5-olate triad (<b>H<sub>2</sub>SQ</b>) and the metallo-precursor [Yb(hfac)<sub>3</sub>]⋅2H<sub>2</sub>O led to...
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MDPI AG
2020-01-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/25/3/492 |
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| author | Bertrand Lefeuvre Jessica Flores Gonzalez Frédéric Gendron Vincent Dorcet François Riobé Vladimir Cherkasov Olivier Maury Boris Le Guennic Olivier Cador Viacheslav Kuropatov Fabrice Pointillart |
| author_facet | Bertrand Lefeuvre Jessica Flores Gonzalez Frédéric Gendron Vincent Dorcet François Riobé Vladimir Cherkasov Olivier Maury Boris Le Guennic Olivier Cador Viacheslav Kuropatov Fabrice Pointillart |
| author_sort | Bertrand Lefeuvre |
| collection | DOAJ |
| description | The reaction between the 2,2’-benzene-1,4-diylbis(6-hydroxy-4,7-di-<i>tert</i>-butyl-1,3-benzodithiol-2-ylium-5-olate triad (<b>H<sub>2</sub>SQ</b>) and the metallo-precursor [Yb(hfac)<sub>3</sub>]⋅2H<sub>2</sub>O led to the formation of a dinuclear coordination complex of formula [Yb<sub>2</sub>(hfac)<sub>6</sub>(<b>H<sub>2</sub>SQ</b>)]⋅0.5CH<sub>2</sub>Cl<sub>2</sub> (<b>H<sub>2</sub>SQ-Yb</b>). After chemical oxidation of <b>H<sub>2</sub>SQ</b> in 2,2’-cyclohexa-2,5-diene-1,4-diylidenebis(4,7-di-<i>tert</i>-butyl-1,3-benzodithiole-5,6-dione (<b>Q</b>), the latter triad reacted with the [Yb(hfac)<sub>3</sub>]⋅2H<sub>2</sub>O precursor to give the dinuclear complex of formula [Yb<sub>2</sub>(hfac)<sub>6</sub>(<b>Q</b>)] (<b>Q-Yb</b>). Both dinuclear compounds have been characterized by X-ray diffraction, DFT optimized structure and electronic absorption spectra. They behaved as field-induced Single-Molecule Magnets (SMMs) nevertheless the chemical oxidation of the semiquinone to quinone moieties accelerated by a factor of five the relaxation time of the magnetization of <b>Q-Yb</b> compared to the one for <b>H<sub>2</sub>SQ-Yb</b>. The <b>H<sub>2</sub>SQ</b> triad efficiently sensitized the Yb<sup>III</sup> luminescence while the chemical oxidation of <b>H<sub>2</sub>SQ</b> into <b>Q</b> induced strong modification of the absorption properties and thus a quenching of the Yb<sup>III</sup> luminescence for <b>Q-Yb</b>. In other words, both magnetic modulation and luminescence quenching are reached by the oxidation of the protonated semiquinone into quinone. |
| first_indexed | 2024-12-11T00:09:23Z |
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| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-12-11T00:09:23Z |
| publishDate | 2020-01-01 |
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| spelling | doaj.art-456d824e8be44b42ad69ba3e98fba6eb2022-12-22T01:28:12ZengMDPI AGMolecules1420-30492020-01-0125349210.3390/molecules25030492molecules25030492Redox-Modulations of Photophysical and Single-molecule Magnet Properties in Ytterbium Complexes Involving Extended-TTF TriadsBertrand Lefeuvre0Jessica Flores Gonzalez1Frédéric Gendron2Vincent Dorcet3François Riobé4Vladimir Cherkasov5Olivier Maury6Boris Le Guennic7Olivier Cador8Viacheslav Kuropatov9Fabrice Pointillart10Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)—UMR 6226, 35000 Rennes, FranceUniv Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)—UMR 6226, 35000 Rennes, FranceUniv Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)—UMR 6226, 35000 Rennes, FranceUniv Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)—UMR 6226, 35000 Rennes, FranceUniv Lyon, Ens de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F69342 Lyon, FranceG. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, GSP-445, Tropinina str. 49, 603950 Nizhny Novgorod, RussiaUniv Lyon, Ens de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F69342 Lyon, FranceUniv Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)—UMR 6226, 35000 Rennes, FranceUniv Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)—UMR 6226, 35000 Rennes, FranceG. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, GSP-445, Tropinina str. 49, 603950 Nizhny Novgorod, RussiaUniv Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)—UMR 6226, 35000 Rennes, FranceThe reaction between the 2,2’-benzene-1,4-diylbis(6-hydroxy-4,7-di-<i>tert</i>-butyl-1,3-benzodithiol-2-ylium-5-olate triad (<b>H<sub>2</sub>SQ</b>) and the metallo-precursor [Yb(hfac)<sub>3</sub>]⋅2H<sub>2</sub>O led to the formation of a dinuclear coordination complex of formula [Yb<sub>2</sub>(hfac)<sub>6</sub>(<b>H<sub>2</sub>SQ</b>)]⋅0.5CH<sub>2</sub>Cl<sub>2</sub> (<b>H<sub>2</sub>SQ-Yb</b>). After chemical oxidation of <b>H<sub>2</sub>SQ</b> in 2,2’-cyclohexa-2,5-diene-1,4-diylidenebis(4,7-di-<i>tert</i>-butyl-1,3-benzodithiole-5,6-dione (<b>Q</b>), the latter triad reacted with the [Yb(hfac)<sub>3</sub>]⋅2H<sub>2</sub>O precursor to give the dinuclear complex of formula [Yb<sub>2</sub>(hfac)<sub>6</sub>(<b>Q</b>)] (<b>Q-Yb</b>). Both dinuclear compounds have been characterized by X-ray diffraction, DFT optimized structure and electronic absorption spectra. They behaved as field-induced Single-Molecule Magnets (SMMs) nevertheless the chemical oxidation of the semiquinone to quinone moieties accelerated by a factor of five the relaxation time of the magnetization of <b>Q-Yb</b> compared to the one for <b>H<sub>2</sub>SQ-Yb</b>. The <b>H<sub>2</sub>SQ</b> triad efficiently sensitized the Yb<sup>III</sup> luminescence while the chemical oxidation of <b>H<sub>2</sub>SQ</b> into <b>Q</b> induced strong modification of the absorption properties and thus a quenching of the Yb<sup>III</sup> luminescence for <b>Q-Yb</b>. In other words, both magnetic modulation and luminescence quenching are reached by the oxidation of the protonated semiquinone into quinone.https://www.mdpi.com/1420-3049/25/3/492ytterbiumextended-tetrathiafulvaleneelectro-activitysingle-molecule magnetluminescence |
| spellingShingle | Bertrand Lefeuvre Jessica Flores Gonzalez Frédéric Gendron Vincent Dorcet François Riobé Vladimir Cherkasov Olivier Maury Boris Le Guennic Olivier Cador Viacheslav Kuropatov Fabrice Pointillart Redox-Modulations of Photophysical and Single-molecule Magnet Properties in Ytterbium Complexes Involving Extended-TTF Triads Molecules ytterbium extended-tetrathiafulvalene electro-activity single-molecule magnet luminescence |
| title | Redox-Modulations of Photophysical and Single-molecule Magnet Properties in Ytterbium Complexes Involving Extended-TTF Triads |
| title_full | Redox-Modulations of Photophysical and Single-molecule Magnet Properties in Ytterbium Complexes Involving Extended-TTF Triads |
| title_fullStr | Redox-Modulations of Photophysical and Single-molecule Magnet Properties in Ytterbium Complexes Involving Extended-TTF Triads |
| title_full_unstemmed | Redox-Modulations of Photophysical and Single-molecule Magnet Properties in Ytterbium Complexes Involving Extended-TTF Triads |
| title_short | Redox-Modulations of Photophysical and Single-molecule Magnet Properties in Ytterbium Complexes Involving Extended-TTF Triads |
| title_sort | redox modulations of photophysical and single molecule magnet properties in ytterbium complexes involving extended ttf triads |
| topic | ytterbium extended-tetrathiafulvalene electro-activity single-molecule magnet luminescence |
| url | https://www.mdpi.com/1420-3049/25/3/492 |
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