title: Self-accelerating CO sorption in a soft nanoporous crystal.
abstract: Carbon monoxide (CO) produced in many large-scale industrial oxidation processes is difficult to separate from nitrogen (N2), and afterward, CO is further oxidized to carbon dioxide. Here, we report a soft nanoporous crystalline material that selectively adsorbs CO with adaptable pores, and we present crystallographic evidence that CO molecules can coordinate with copper(II) ions. The unprecedented high selectivity was achieved by the synergetic effect of the local interaction between CO and accessible metal sites and a global transformation of the framework. This transformable crystalline material realized the separation of CO from mixtures with N2, a gas that is the most competitive to CO. The dynamic and efficient molecular trapping and releasing system is reminiscent of sophisticated biological systems such as heme proteins.
authors: Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 615-8510, Japan.
authors: Hiroshi
authors: H
authors: Sato
authors: Wataru
authors: W
authors: Kosaka
authors: Ryotaro
authors: R
authors: Matsuda
authors: Akihiro
authors: A
authors: Hori
authors: Yuh
authors: Y
authors: Hijikata
authors: Rodion V
authors: RV
authors: Belosludov
authors: Shigeyoshi
authors: S
authors: Sakaki
authors: Masaki
authors: M
authors: Takata
authors: Susumu
authors: S
authors: Kitagawa
mesh_terms: D002248:Carbon Monoxide / Q000737:chemistry*; D003300:Copper / Q000737:chemistry; D018360:Crystallography, X-Ray; D006420:Hemeproteins / Q000737:chemistry; D006801:Humans; D058608:Nanopores; D049329:Nanostructures / Q000737:chemistry*
chemical_list: D006420:Hemeproteins; D003300:Copper; D002248:Carbon Monoxide