title: Changes in electronic properties of polymeric one-dimensional {[M(CN)2]-}n (M = Au, Ag) chains due to neighboring closed-shell Zn(II) or open-shell Cu(II) ions.
abstract: A series of d(10) dicyanometallate polymeric compounds were studied by electronic spectroscopy and density functional theory (DFT) calculations. In these materials, the negatively charged one-dimensional (1D) polymeric chains are linked together by [M(en)(2)](2+) (M = Cu(II) and Zn(II); en = ethylenediamine). More than innocent building blocks, the [M(en)(2)](2+) units offer a possible synthetic way to modify electronic properties of the materials. Through its low energy d-d excited state, the d(9) copper(II) ions offer deactivation pathways for the normally emissive dicyanometallate polymer. Deactivation was shown to be specific to the excited state energy.
authors.affiliation: Department of Chemistry, University of Maine, Orono, Maine 04473, USA.
authors.forename: François
authors.initials: F
authors.lastname: Baril-Robert
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Li
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Katz
authors.forename: Andrew R
authors.initials: AR
authors.lastname: Geisheimer
authors.forename: Daniel B
authors.initials: DB
authors.lastname: Leznoff
authors.forename: Howard
authors.initials: H
authors.lastname: Patterson