Thiophenyl Anilato-Based NIR-Emitting Lanthanide (Ln III = Er, Yb) Dinuclear Complexes

Thiophenyl Anilato-Based NIR-Emitting Lanthanide (Ln III = Er, Yb) Dinuclear Complexes

By combining Er and Yb ions with 3,6-dithiophene-anilate (Th An) and scorpionate hydrotris(pyrazol-1-yl)borate (HBpz ) ligands new luminescent dinuclear complexes are obtained. The two materials formulated as [((HB(pz) ) Yb) (μ-th An)]·4DCM·1.3H O and [((HB(pz) ) Er) (μ-th An)]·4DCM·1.8H O respectiv...

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Veröffentlicht in:Molecules (Basel, Switzerland) Switzerland), 2024-12, Vol.29 (23), p.5804
Hauptverfasser: Manna, Fabio, Oggianu, Mariangela, Mameli, Valentina, Lai, Stefano, Simbula, Angelica, Quochi, Francesco, Avarvari, Narcis, Mercuri, Maria Laura
Format: Artikel
Sprache:eng
Schlagworte:
anilates
antenna effect
Antennas
Antennas (Electronics)
Crystal structure
Electrons
lanthanides
Ligands
Mass spectrometry
NIR emission
Optical properties
Rare earth metals
Scientific imaging
Solvents
Thiophene
vibrational quenching
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Zusammenfassung:By combining Er and Yb ions with 3,6-dithiophene-anilate (Th An) and scorpionate hydrotris(pyrazol-1-yl)borate (HBpz ) ligands new luminescent dinuclear complexes are obtained. The two materials formulated as [((HB(pz) ) Yb) (μ-th An)]·4DCM·1.3H O and [((HB(pz) ) Er) (μ-th An)]·4DCM·1.8H O respectively, have been structurally characterized by SC-XRD and PXRD studies. This study presents a comprehensive investigation of the photophysical properties of the Th An ligand for the first time. Our findings reveal the crucial role of the thiophene anilate as an effective optical antenna, which sensitizes near-infrared (NIR)-emitting lanthanide ions, specifically Er and Yb . The significant impact of vibrational quenching on the Ln NIR emission efficiency has been also highlighted.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules29235804