title: An unusual porous metal-organic framework that demonstrates the highly efficient exchange of metal ions and the reversible adsorption of iodine.
abstract: An exceedingly rare porous metal-organic framework that is based on cadmium ions and multi carboxylate ligands, namely, Na(0.25)[(CH3)2NH2](1.75)[Cd(L)2]·x solvent (1, H2L=2-hydroxymethyl-4,6-bi(2'-methoxyl-4'-(2''-1''-carboxyl)-ethlene)-1,3,5-mesitylene), has been successfully synthesized under solvothermal conditions. Compound 1 exhibits a 2D network that is constructed from left- and right-handed helical chains. Furthermore, neighboring 2D layers are stacked to give a porous motif. Strikingly, compound 1 exhibits the highly efficient exchange of metal ions from the main framework components whilst maintaining the structural integrity and the crystallinity of the network. In addition, Compound 1 also shows outstanding performance in the reversible adsorption of iodine.
authors.affiliation: Key Lab of Polyoxometalate Science, Department of Chemistry, Northeast Normal University, Changchun 130024 (People's Republic of China), Fax: (+86) 431-85098620.
authors.forename: Hong-Mei
authors.initials: HM
authors.lastname: Zhang
authors.forename: Jin
authors.initials: J
authors.lastname: Yang
authors.forename: Yuan-Chun
authors.initials: YC
authors.lastname: He
authors.forename: Jian-Fang
authors.initials: JF
authors.lastname: Ma
keywords: adsorption; carboxylate ligands; ion exchange; metal-organic frameworks; porous materials