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Published on: April 14, 2020
Highly luminescent bis-diketone lanthanide complexes with triple-stranded dinuclear structure.
Hong-Feng Li1, Peng-Fei Yan, Peng Chen
1Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, PR China.
Dalton Transactions (Cambridge, England : 2003)
|November 17, 2011
Summary
A novel bis-β-diketone ligand, BTB, was synthesized and used to create dinuclear lanthanide complexes. These complexes exhibit strong luminescence, with structures determined by X-ray crystallography.
Area of Science:
- Coordination Chemistry
- Materials Science
- Photophysics
Background:
- Lanthanide complexes are of interest for their unique luminescent properties.
- Designing new ligands is crucial for tuning the photophysical behavior of lanthanide complexes.
Purpose of the Study:
- To synthesize and characterize novel dinuclear lanthanide complexes using a new bis-β-diketone ligand (BTB).
- To investigate the structural and photophysical properties of these complexes.
Main Methods:
- Synthesis of the bis-β-diketone ligand (BTB) and subsequent complexation with lanthanide ions.
- Characterization using spectroscopic techniques (e.g., UV-Vis, luminescence spectroscopy).
- X-ray crystallographical analysis to determine the solid-state structures.
Main Results:
- Successful synthesis of seven dinuclear lanthanide complexes with the BTB ligand.
- X-ray crystallography revealed triple-stranded dinuclear structures for complexes 1, 3, and 4.
- Complexes 1 and 3-7 displayed strong visible red or near-infrared (NIR) luminescence upon excitation.
- Photoluminescence quantum yields and lifetimes were determined for the Europium(III) complexes.
Conclusions:
- The designed BTB ligand effectively forms stable dinuclear lanthanide complexes with interesting structural motifs.
- These complexes exhibit significant luminescence, highlighting their potential for applications in lighting and sensing.
- The study provides insights into structure-property relationships in lanthanide coordination compounds.
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