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Fluorinated β-diketone-based Sm(III) complexes: spectroscopic and optoelectronic characteristics
Anuj Dalal1, Kapeesha Nehra1, Anjli Hooda1
1Department of Chemistry, Maharshi Dayanand University, Rohtak, India.
New Samarium(III) complexes featuring fluorinated ligands exhibit orange-red luminescence. These compounds show potential for use in organic electroluminescent devices due to efficient energy transfer.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Photochemistry
Background:
- Samarium(III) complexes are investigated for their luminescent properties.
- Organic electroluminescent devices require efficient emissive materials.
Purpose of the Study:
- Synthesize and characterize novel octa-coordinated Samarium(III) complexes.
- Evaluate their photoluminescent properties and potential applications.
Main Methods:
- Complex synthesis using 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione (TFNB) and 2,2'-bipyridine derivatives.
- Characterization via elemental analysis, infrared spectroscopy, 1H NMR, and thermogravimetric analysis.
- Photoluminescence spectroscopy to determine emission and excitation spectra.
Main Results:
- Novel Sm(III) complexes with TFNB and Bpy derivatives were successfully synthesized.
- Complexes exhibit sharp, structured Sm-based emissions in the visible region upon UV irradiation.
- Evidence of antenna effect: energy transfer from ligands to Sm(III) center.
- Luminescence observed in the orange-red region, confirmed by photoluminescence and colorimetric data.
Conclusions:
- The synthesized Sm(III) complexes display efficient luminescence via the antenna effect.
- These complexes are promising candidates for emissive layers in organic electroluminescent devices.
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