Triazine Mg-Based Phosphonate Metal-Organic Framework for ε-Caprolactone Polymerization.

Area of Science:

• Materials Science
• Catalysis
• Polymer Chemistry

Background:

• Metal-organic frameworks (MOFs) offer tunable properties for diverse applications.
• Magnesium-based MOFs (Mg-MOFs) are explored for their catalytic potential.
• Ring-opening polymerization of ε-caprolactone is crucial for bioplastic synthesis.

Purpose of the Study:

• To synthesize and characterize a novel Mg-MOF, IEF-31.
• To evaluate the catalytic performance of IEF-31 in ε-caprolactone polymerization.
• To demonstrate the potential of Mg-based P-MOFs for sustainable bioplastics.

Main Methods:

• Solvothermal synthesis of the MOF.
• Single-crystal X-ray diffraction for structural elucidation.
• Catalytic testing of IEF-31 in ring-opening polymerization of ε-caprolactone.

Main Results:

• Successful synthesis and characterization of IEF-31, a 3D Mg-MOF with free P-OH groups and 1D channels.
• IEF-31 exhibits high thermal and chemical stability across a wide pH range.
• Catalytic application of IEF-31(Mg) in ε-caprolactone polymerization yielded high monomer conversions and low dispersity polymers (Đ ≈ 1.1).

Conclusions:

• IEF-31 is a robust and stable Mg-based phosphonate MOF.
• Mg-based P-MOFs can serve as effective catalysts for sustainable bioplastic production.
• This work provides a foundation for designing advanced Mg-MOFs for clean polymerization processes.