Pore Space Partition by Symmetry-Matching Regulated Ligand Insertion and Dramatic Tuning on Carbon Dioxide Uptake

Metal–organic frameworks (MOFs)
with the highest CO2 uptake capacity are usually those
equipped with open metal
sites. Here we seek alternative strategies and mechanisms for developing
high-performance CO2 adsorbents. We demonstrate that through
a ligand insertion pore space partition strategy, we can create crystalline
porous materials (CPMs) with superior CO2 uptake capacity.
Specifically, a new material, CPM-33b-Ni without any open metal sites,
exhibits the CO2 uptake capacity comparable to MOF-74 with
the same metal (Ni) at 298 K and 1 bar.