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Three-coordinated Ce(III) complexes with long wavelength d-f emissions.
Ziyu Liu1, Yihu Yang1, Wenliang Huang2
1Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, PR China.
Researchers developed new cerium(III) complexes for tunable luminescence. These materials utilize f-d transitions, offering advantages over traditional f-f transitions for molecular luminescent materials.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Photophysics
Background:
- Lanthanide luminescent materials are widely used.
- Current applications often rely on intrashell f-f transitions.
- f-d transitions offer a novel approach for molecular luminescent materials.
Purpose of the Study:
- To explore f-d transitions in lanthanide complexes.
- To develop three-coordinated cerium(III) complexes with tunable emission.
- To investigate the impact of ligand field engineering on luminescence.
Main Methods:
- Synthesis of three-coordinated cerium(III) complexes.
- Characterization using X-ray crystallography and 1H NMR spectroscopy.
- Photophysical property investigation, including photoluminescent quantum yield and CIE values.
Main Results:
- Successfully synthesized and characterized novel cerium(III) complexes.
- Observed strong d-f emissions with high photoluminescent quantum yields (up to 62%).
- Achieved specific CIE color coordinates (0.46, 0.51).
Conclusions:
- Demonstrated the potential of f-d transitions for molecular luminescence.
- Established a method for tuning emission wavelengths via ligand field engineering.
- Opened new avenues for designing lanthanide luminescent molecules.
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