title: Chalcogels: porous metal-chalcogenide networks from main-group metal ions. Effect of surface polarizability on selectivity in gas separation.
authors.affiliation: Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States.
authors.forename: Santanu
authors.initials: S
authors.lastname: Bag
authors.forename: Mercouri G
authors.initials: MG
authors.lastname: Kanatzidis