title: A self-assembled multiporphyrin cage complex through three different zinc(II) center formation under well-balanced aqueous conditions.
abstract: Construction of a self-assembled cage complex through three different Zn(II)  centers is achieved using a Zn porphyrin ligand with four 2,2'-bipyridin-5-yl (bpy) groups. The multiporphyrin cage encapsulates guest molecules unsymmetrically by π-π interactions. Well-balanced aqueous conditions, which allow the formation of both tris(bpy) and hydrated bis(bpy) Zn(II)  units, result in the unsymmetrical yet well-defined supramolecular structure.
authors.affiliation: Department of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Nakamura
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Ube
authors.forename: Motoo
authors.initials: M
authors.lastname: Shiro
authors.forename: Mitsuhiko
authors.initials: M
authors.lastname: Shionoya