A step closer to efficient carbon capture: Researchers used a pair of organic molecules to create a crystal structure that has a regular array of corkscrew-shaped tunnels running in parallel, that allowed 600 times more carbon dioxide to enter the framework than nitrogen.

See the source article by following the link below:
A step closer to efficient carbon capture: Researchers used a pair of organic molecules to create a crystal structure that has a regular array of corkscrew-shaped tunnels running in parallel, that allowed 600 times more carbon dioxide to enter the framework than nitrogen.