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Efficient luminescence control in dithienylethene functionalized cyclen macrocyclic lanthanide complexes

Hassan Al Sabea 1 Nadège Hamon 2 Olivier Galangau 1 Lucie Norel 1, * Olivier Maury 3 François Riobé 3 Raphaël Tripier 2 Stéphane Rigaut 1
* Corresponding author
1 ISCR - Institut des Sciences Chimiques de Rennes
2 CEMCA - Chimie, Electrochimie Moléculaires et Chimie Analytique
3 LC - Laboratoire de Chimie - UMR5182
Abstract : We report the synthesis of an original ligand scaffold and the corresponding yttrium(III), europium(III) and ytterbium(III) complexes. All three compounds show reversible photochromism with high photo-conversions. Photoluminescence experiments demonstrate that this design is adapted for both europium and ytterbium emission switching. The OFF/ON luminescence ratio are excellent in the case of europium (4 to 8 %) and still quite good in the case of ytterbium (around 13 %)
Keywords : lanthanides Dithienylethylene Cyclen photochromism ytterbium(III) europium(III) azamacrocycles luminescence molecular switch
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https://hal.univ-brest.fr/hal-02903552
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Submitted on : Thursday, August 27, 2020 - 11:31:32 AM
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UNIV-BREST | ISCR-OMC | ISCR | CEMCA-BREST | UR1-UFR-SPM | HAL-CHIMIE-ENSLYON | UNIV-RENNES1 | ENS-LYON | UDL | CNRS | IBSAM | INSA-GROUPE | UNIV-RENNES | INSA-RENNES | INC-CNRS | UNIV-LYON1

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Hassan Al Sabea, Nadège Hamon, Olivier Galangau, Lucie Norel, Olivier Maury, et al.. Efficient luminescence control in dithienylethene functionalized cyclen macrocyclic lanthanide complexes. Inorganic Chemistry Frontiers, Royal Society of Chemistry, 2020, 7 (16), pp.2979-2989. ⟨10.1039/D0QI00354A⟩. ⟨hal-02903552⟩

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