Polymer-Metal-Organic Frameworks (polyMOFs) Based on Tailor-Made Poly(alkenamer)s

Area of Science:

• Materials Science
• Polymer Chemistry
• Nanotechnology

Background:

• Traditional polymer-metal-organic frameworks (polyMOFs) primarily use backbone-integrated ligands, limiting control over synthesis and properties.
• Exploration of pendant ligand systems in polyMOFs is limited, hindering diverse applications and property tuning.
• Existing methods for pendant ligand polyMOFs face challenges in polymerization control, composition, and porosity access.

Purpose of the Study:

• To develop a novel method for synthesizing polyMOFs using polymers with pendant metal-coordinating ligands.
• To overcome the limitations of existing polyMOF synthesis strategies, particularly concerning polymerization control and material properties.
• To demonstrate the potential of pendant ligand architectures for creating tunable and porous polyMOFs.

Main Methods:

• Design and synthesis of polymers featuring 1,4-benzenedicarboxylic acid (H2bdc) as pendant groups.
• Utilizing controlled olefin-metathesis polymerization for precise polymer architecture construction.
• Assembly of synthesized poly(alkenamer)s into porous, crystalline networks with an isoreticular MOF (IRMOF) lattice topology.

Main Results:

• Successful synthesis of polymers with pendant H2bdc units via controlled olefin-metathesis polymerization.
• Formation of porous, crystalline polyMOFs exhibiting an IRMOF lattice topology.
• Demonstration of tailored polyMOF characteristics, including controlled composition, narrow dispersity, and side chain functionalization.

Conclusions:

• Pendant ligand-based polymer architectures and controlled polymerization offer a promising route to advanced polyMOFs.
• This methodology provides enhanced control over polyMOF synthesis, composition, and properties compared to previous approaches.
• The developed strategy opens avenues for designing novel polyMOFs with specific functionalities and improved porosity for diverse applications.