Gautier Félix, Alena N Kulakova, Saad Sene, Victor N Khrustalev, Miguel A Hernández-Rodríguez, Elena S Shubina, Tristan Pelluau, Luís D Carlos, Yannick Guari, Albano N Carneiro Neto, Alexey N Bilyachenko, Joulia Larionova
We report the synthesis and single-crystal X-ray diffraction, magnetic, and luminescence measurements of a novel family of luminescent cage-like tetranuclear silsesquioxanes (PhSiO1.5 )8 (LnO1.5 )4 (O)(C5 H8 O2 )6 (EtOH)2 (CH3 CN)2 ⋅2CH3 CN (where Ln = Tb, 1 ; Tb/Eu, 2 ; and Gd, 3 ), featuring seven-coordinated lanthanide ions arranged in a one-capped trigonal prism geometry. Compounds 1 and 2 exhibit characteristic Tb3+ and Tb3+ /Eu3+ -related emissions, respectively, sensitized by the chelating antenna acetylacetonate (acac) ligands upon excitation in the UV and visible spectral regions...
2024: Frontiers in Chemistry