Bismuth organic frameworks exhibiting enhanced phosphorescence

Area of Science:

• Materials Science
• Inorganic Chemistry
• Photochemistry

Background:

• Bismuth-based organic frameworks (BiOFs) show promise for phosphorescent applications.
• The correlation between BiOFs structure and optical properties requires further investigation.

Purpose of the Study:

• To explore structure-dependent phosphorescence in BiOFs using various multidentate ligands.
• To understand the mechanisms behind long-lasting phosphorescence and its modulation through structural changes.

Main Methods:

• Synthesis of BiOFs with different multidentate ligands.
• Spectroscopic analysis to study luminescence properties.
• Single-crystal X-ray diffraction for structural determination.

Main Results:

• Densely packed BiOF frameworks demonstrate long-lasting room-temperature phosphorescence.
• Efficient electron-hole separation is identified as the key mechanism for sustained luminescence.
• Structural modifications directly influence and control the emission characteristics.

Conclusions:

• Structural tuning of BiOFs is an effective strategy for modulating optical properties.
• The observed long-lasting phosphorescence opens avenues for developing eco-friendly photocatalysts.