Porous material combining rigidity and flexibility separating many different gases is made from common materials

https://phys.org/news/2024-06-flexible-solution-gases.html

"less energy-intensive, cheaper, scalable... molecular linkers oscillate changing pore size... increasing temperature shrinks pore suze... made of small crystalline molecules mostly comprised of silicon, aluminum, oxygen... dynamic covalent chemistry focusing on reversibility of boron-oxygen bond breaking/ reforming... fabrication easy, simple... applied for patent... integrate into membrane-based applications, using much less energy"

Related: Surface oxygen functionality controls selective transport of metal ions through graphene oxide membranes

https://phys.org/news/2024-07-surface-oxygen-functionality-metal-ions.html