Mixed Phenanthroline–Bipyridine Europium and Ytterbium Cryptates─Bright Luminophores with Small Radiative Lifetimes
New phenanthroline-based tris(biaryl) europium(III) and ytterbium(III) cryptates with great luminescence efficiencies in solution are reported. 1,10-Phenantroline, in combination with 2,2'-bipyridine-<i>N</i>,<i>N</i>'-dioxide, delivers cryptates with high rigidity, efficient lanthanoid(III) sensitization (η<sub>sens</sub>) and small radiative lifetimes τ<sub>rad</sub> for Eu and Yb. The powerful synergy of both bidentate chelating units results in excellent absolute quantum yields of up to 20% for the europium complexes in aqueous solution, which indicates an impressive improvement compared to other well-known tris(bipyridyl)-based Eu(III) cryptates.
Authors
- Hartmut Schubert
- David Hunger (ORCID: https://orcid.org/0000-0001-6156-6145)
- Nicholas Jobbitt (ORCID: https://orcid.org/0000-0002-6361-3061)
- Timo Neumann
- Michael Seitz (ORCID: https://orcid.org/0000-0002-9313-2779)
- Tobias Haas
- Xiaoyu Yang
Institutions
- Karlsruhe Institute of Technology (DE)
- Petroleum Helicopters International (United States) (US)
- University of Tübingen (DE)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2026-02-22
- DOI
- https://doi.org/10.1021/acs.inorgchem.5c05828
- Primary Topic
- Lanthanide and Transition Metal Complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.00