Buchumschlag

Excited state properties of Lanthanide(III) complexes with a nonadentate bispidine ligand

EuIII, TbIII, GdIII and YbIII complexes of the nonadentate bispidine derivative L2 (bispidine=3,7-diazabicyclo[3.3.1]nonane) were successfully synthesized and their emission properties studied. The X-ray crystallography reveals full encapsulation by the nonadentate ligand L2 that enforces to all LnI...

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Hauptverfasser: Abad Galan, Laura (VerfasserIn) , Cieslik, Patrick (VerfasserIn) , Comba, Peter (VerfasserIn) , Gast, Michael (VerfasserIn) , Maury, Olivier (VerfasserIn) , Neupert, Lucca (VerfasserIn) , Roux, Amandine (VerfasserIn) , Wadepohl, Hubert (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2021
In: Chemistry - a European journal
Year: 2021, Jahrgang: 27, Heft: 40, Pages: 10303-10312
ISSN:1521-3765
DOI:10.1002/chem.202005459
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1002/chem.202005459
Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.202005459
Volltext
Verfasserangaben:Laura Abad-Galán, Patrick Cieslik, Peter Comba, Michael Gast, Olivier Maury, Lucca Neupert, Amandine Roux, and Hubert Wadepohl
Beschreibung
Zusammenfassung:EuIII, TbIII, GdIII and YbIII complexes of the nonadentate bispidine derivative L2 (bispidine=3,7-diazabicyclo[3.3.1]nonane) were successfully synthesized and their emission properties studied. The X-ray crystallography reveals full encapsulation by the nonadentate ligand L2 that enforces to all LnIII cations a common highly symmetrical capped square antiprismatic (CSAPR) coordination geometry (pseudo C4v symmetry). The well-resolved identical emission spectra in solid state and in solution confirm equal structures in both media. As therefore expected, this results in long-lived excited states and high emission quantum yields ([EuIIIL2]+, H2O, 298 K, τ=1.51 ms, ϕ=0.35; [TbIIIL2]+, H2O, 298 K, τ=1.95 ms, ϕ=0.68). Together with the very high kinetic and thermodynamic stabilities, these complexes are a possible basis for interesting biological probes.
Beschreibung:Gesehen am 14.04.2023
Beschreibung:Online Resource
ISSN:1521-3765
DOI:10.1002/chem.202005459

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