title: Directional Energy Transfer in Mixed-Metallic Copper(I)-Silver(I) Coordination Polymers with Strong Luminescence.
abstract: Strongly luminescent mixed-metallic copper(I)-silver(I) coordination polymers with various Cu/Ag ratio were prepared by utilizing the isomorphous relationship of the luminescent parent homometallic coordination polymers (Φ(em) = 0.65 and 0.72 for the solid Cu and Ag polymers, respectively, at room temperature). The mixed-metallic polymer with the mole fraction of copper even as low as 0.005 exhibits a strong emission (Φ(em) = 0.75) from only the copper sites as the result of the efficient energy migration from the silver to the copper sites. The migration rates between the two sites were evaluated from the dependence of emission decays upon the mole fraction of copper.
authors.affiliation: Division of Chemistry, Faculty of Science, Hokkaido University , Kita-ku, Sapporo 060-0810, Japan.
authors.forename: Seiko
authors.initials: S
authors.lastname: Shibata
authors.affiliation: Graduate School of Science and Engineering, University of Toyama , Toyama, Toyama 930-8555, Japan.
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Tsuge
authors.affiliation: Division of Chemistry, Faculty of Science, Hokkaido University , Kita-ku, Sapporo 060-0810, Japan.
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Sasaki
authors.affiliation: Graduate School of Science, Hiroshima University , Higashi-Hiroshima, Hiroshima 739-8526, Japan.
authors.forename: Shoji
authors.initials: S
authors.lastname: Ishizaka
authors.affiliation: Division of Chemistry, Faculty of Science, Hokkaido University , Kita-ku, Sapporo 060-0810, Japan.
authors.forename: Noboru
authors.initials: N
authors.lastname: Kitamura