title: Selective CO2 gas adsorption in the narrow crystalline cavities of flexible peptide metallo-macrocycles.
abstract: Crystalline peptide Ni(ii)-macrocycles (BF4(-) salt) exhibited moderate CO2 gas adsorption (ca. 6-7 CO2 molecules per macrocycle) into very narrow cavities (narrowest part <2 Å), accompanied by the expansion of the cavities. The BF4(-) salt demonstrated selective uptake of CO2 gas in preference to CH4 and N2 gases.
authors.affiliation: Department of Chemistry and Biochemistry, Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan. miyake.ryosuke@ocha.ac.jp.
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Miyake
authors.forename: Chika
authors.initials: C
authors.lastname: Kuwata
authors.forename: Yui
authors.initials: Y
authors.lastname: Masumoto
mesh_terms: D000327:Adsorption; D002245:Carbon Dioxide / Q000737:chemistry / Q000378:metabolism*; D003460:Crystallization; D047028:Macrocyclic Compounds / Q000737:chemistry / Q000378:metabolism*; D009532:Nickel / Q000737:chemistry / Q000378:metabolism*; D018583:Pliability; D014961:X-Ray Diffraction
chemical_list: D047028:Macrocyclic Compounds; D002245:Carbon Dioxide; D009532:Nickel