In situ spectroelectrochemistry of poly(N,N'-ethylenebis(salicylideneiminato)Cu(II))

Ján Tarábek; Peter Rapta; Martin Kalbác; Lothar Dunsch

doi:10.1021/ac049283u

In situ spectroelectrochemistry of poly(N,N'-ethylenebis(salicylideneiminato)Cu(II))

Anal Chem. 2004 Oct 1;76(19):5918-23. doi: 10.1021/ac049283u.

Authors

Ján Tarábek¹, Peter Rapta, Martin Kalbác, Lothar Dunsch

Affiliation

¹ Abteilung Elektrochemie und leitfähige Polymere, Leibniz-Institut für Festkörper- und Werkstoffforschung, Helmholtzstrasse 20, D-010 69 Dresden, Germany.

PMID: 15456315
DOI: 10.1021/ac049283u

Abstract

In situ ESR, UV-visible, and FT-IR-ATR spectroelectrochemistry were used to study the charge transfer for electrochemically synthesized poly(N,N'-ethylenebis(salicylideneiminato)Cu(II)), which represents a macromolecular metal chelate with ESR-active central metal ions. Structural evidence for different charged states in electroactive poly(Cu(II)-salen) was obtained from ESR, UV-visible, and FT-IR spectra under reversible redox cycling. The changes in a characteristic broad ESR line without hyperfine splitting originating from Cu(II) as well as in the corresponding UV-visible and infrared spectra are discussed in order to describe an electron transfer to the redox-active sites within the polymer chains in detail.