Mixed Phenanthroline–Bipyridine Europium and Ytterbium CryptatesBright Luminophores with Small Radiative Lifetimes
Tobias Haas, Timo Neumann, Nicholas Jobbitt, Xiaoyu Yang, Hartmut Schubert, David Hunger, Michael Seitz
TL;DR
This paper introduces new europium and ytterbium complexes with high luminescence efficiency and short radiative lifetimes.
Contribution
The novel use of phenanthroline and bipyridine-N,N′-dioxide creates highly efficient lanthanide cryptates with improved quantum yields.
Findings
Phenanthroline-based cryptates show excellent luminescence efficiency in solution.
Europium complexes achieve up to 20% absolute quantum yields in aqueous solution.
The complexes exhibit small radiative lifetimes and efficient lanthanoid sensitization.
Abstract
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-N,N′-dioxide, delivers cryptates with high rigidity, efficient lanthanoid(III) sensitization (ηsens) and small radiative lifetimes τrad 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.
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
Figure 18Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsLanthanide and Transition Metal Complexes · Organic Light-Emitting Diodes Research · Magnetism in coordination complexes