A metal–organic framework with chiral pores and decorated imidazole and methyl groups was constructed. Upon activation, this MOF undergoes a pore contraction and shows very high selectivity for CO2/N2 and CO2/CH4, indicating a synergistic effect of dynamic pores and functional groups.
[Li, Wenjie; Nelson, Dorian P.; Jensen, Mark S.; Hoerrner, R. Scott; Cai, Dongwei; Larsen, Robert D.; Reider, Paul J. Journal of Organic Chemistry, 2002 , vol. 67, # 15 p. 5394 - 5397]