Polymeric Porous Organic Cages: A Platform for Processable Catalysis and Separation

Area of Science:

• Materials Science
• Polymer Chemistry
• Nanotechnology

Background:

• Porous organic cages (POCs) possess tunable cavities but suffer from poor processability, limiting their material integration.
• Transforming POCs into processable polymers remains an underexplored area with significant potential.

Purpose of the Study:

• To develop a synthetic strategy for creating processable polymers from POCs.
• To explore the catalytic and separation capabilities of the resulting polymeric materials.

Main Methods:

• Synthesized linearly linked cage polymers (PolyPOCs) from POCs.
• Incorporated and reduced gold ions within PolyPOCs to form gold nanoparticle-encapsulated materials (Au@PolyPOCs).
• Fabricated PolyPOC-based membranes for separation tests.

Main Results:

• Achieved PolyPOCs with excellent solubility, stability, and processability.
• Au@PolyPOCs demonstrated high efficiency (TOF 150 min⁻¹) in ammonia borane alcoholysis for hydrogen production with recyclability.
• PolyPOC membranes exhibited >99% rejection of dyes and exceptional stability in continuous operation.

Conclusions:

• Polymeric POCs offer a versatile platform bridging molecular and macroscale applications.
• This work advances the integration of POCs into functional materials for catalysis and separations.