Lanthanoid Luminophores with Linear, Bipyridine-Based Antenna Ligands
A new, linear octadentate chelator, "en-pypa," based on 2,2'-bipyridine-6-carboxylic acid, has been developed. This ligand can bind trivalent lanthanoids (e.g., Sm, Eu, Tb, Dy, Tm, Yb, and Lu) very rapidly and yields well-defined complexes that exhibit relatively strong luminescence in aqueous solution. This study reports the synthesis, as well as the structural and photophysical characterization. In addition, nonradiative deactivation of near-infrared luminescence by the ligand N-H oscillators is addressed by comparison of the luminescence from the Yb complexes of en-pypa and its methylated analogue.
Authors
- Christof Holzer (ORCID: https://orcid.org/0000-0001-8234-260X)
- Christian Kruck
- Manfred M. Kappes (ORCID: https://orcid.org/0000-0002-1199-1730)
- Elisabeth Kreidt (ORCID: https://orcid.org/0000-0003-1229-3181)
- Michael Seitz (ORCID: https://orcid.org/0000-0002-9313-2779)
- Thomas Neumann (ORCID: https://orcid.org/0000-0002-5653-906X)
- Alexander Schäfer (ORCID: https://orcid.org/0000-0002-2392-3217)
- Patrick Weis (ORCID: https://orcid.org/0000-0001-7006-6759)
Institutions
- Karlsruhe Institute of Technology (DE)
- TU Dortmund University (DE)
- Institute of Nanotechnology (GB)
- University of Tübingen (DE)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2025-10-28
- DOI
- https://doi.org/10.1021/acs.inorgchem.5c03839
- Citations
- 1
- Primary Topic
- Lanthanide and Transition Metal Complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.52