title: Porous coordination polymers with ubiquitous and biocompatible metals and a neutral bridging ligand.
abstract: The design of inexpensive and less toxic porous coordination polymers (PCPs) that show selective adsorption or high adsorption capacity is a critical issue in research on applicable porous materials. Although use of Group II magnesium(II) and calcium(II) ions as building blocks could provide cheaper materials and lead to enhanced biocompatibility, examples of magnesium(II) and calcium(II) PCPs are extremely limited compared with commonly used transition metal ones, because neutral bridging ligands have not been available for magnesium(II) and calcium(II) ions. Here we report a rationally designed neutral and charge-polarized bridging ligand as a new partner for magnesium(II) and calcium(II) ions. The three-dimensional magnesium(II) and calcium(II) PCPs synthesized using such a neutral ligand are stable and show selective adsorption and separation of carbon dioxide over methane at ambient temperature. This synthetic approach allows the structural diversification of Group II magnesium(II) and calcium(II) PCPs.
authors.affiliation: 1] Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0020, Japan [2] Graduate School of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan [3] PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi 332-0012, Japan [4] Creative Research Institute (CRIS), Hokkaido University, Sapporo 001-0021, Japan.
authors.forename: Shin-ichiro
authors.initials: S
authors.lastname: Noro
authors.affiliation: Graduate School of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan.
authors.forename: Junya
authors.initials: J
authors.lastname: Mizutani
authors.affiliation: Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan.
authors.forename: Yuh
authors.initials: Y
authors.lastname: Hijikata
authors.affiliation: 1] PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi 332-0012, Japan [2] Institute for Integrated Cell-Material Science (WPI-iCeMS), Kyoto University, Kyoto 615-8510, Japan.
authors.forename: Ryotaro
authors.initials: R
authors.lastname: Matsuda
authors.affiliation: Institute for Integrated Cell-Material Science (WPI-iCeMS), Kyoto University, Kyoto 615-8510, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Sato
authors.affiliation: Institute for Integrated Cell-Material Science (WPI-iCeMS), Kyoto University, Kyoto 615-8510, Japan.
authors.forename: Susumu
authors.initials: S
authors.lastname: Kitagawa
authors.affiliation: Research and Utilization Division, Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan.
authors.forename: Kunihisa
authors.initials: K
authors.lastname: Sugimoto
authors.affiliation: Synthesis Research Laboratory, Kurashiki Research Center, Kuraray Co. Ltd., Sakazu, Kurashiki, Okayama 710-0801, Japan.
authors.forename: Yasutaka
authors.initials: Y
authors.lastname: Inubushi
authors.affiliation: 1] Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0020, Japan [2] Graduate School of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan.
authors.forename: Kazuya
authors.initials: K
authors.lastname: Kubo
authors.affiliation: 1] Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0020, Japan [2] Graduate School of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan.
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Nakamura
mesh_terms: D000327:Adsorption; D001672:Biocompatible Materials / Q000737:chemistry*; D002118:Calcium / Q000737:chemistry; D008274:Magnesium / Q000737:chemistry; D008670:Metals / Q000737:chemistry*; D015394:Molecular Structure; D011108:Polymers / Q000737:chemistry*; D016062:Porosity
chemical_list: D001672:Biocompatible Materials; D008670:Metals; D011108:Polymers; D008274:Magnesium; D002118:Calcium