Cobalt salen functionalised polycrystalline gold surfaces

Minna T. Räisänen, Pedro de Almeida, Kristoffer Meinander, Marianna Kemell, IlPo Mutikainen, Markku Leskelä, Timo Repo

    Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

    Abstrakti

    The ability of N,N'-ethylene-bis(4-dodecyloxysalicylideneiminato)Co(II) (4) and literature known N,N'-ethylene-bis(3,5-di-t-butylsalicylideneiminato)Co(II) (5) to coordinate molecular oxygen was studied using ultraviolet-visible spectroscopy. For a comparison, the study was complemented with the archetype Co(II) salen (salen=N,N'-ethylene-bis(salicylideneamine)) complex. Especially 4, bearing long alkoxy chain substituents, coordinates dioxygen efficiently and reversibly, and therefore is an attractive candidate for further development of functional surfaces e.g. towards molecular level dioxygen sensors. In this respect, complexes 4 and 5 were attached on two different 4-pyridinethiol pre-treated polycrystalline An surfaces. The changes in surface morphology after pyridinethiol and the complex treatment were studied with atomic force microscopy (AFM) measurements. Accordingly, with this method fairly smooth surfaces bearing cobalt(II) salen complexes can be prepared. In addition, the AFM results were complemented by X-ray reflection, cyclic voltammetry and wettability studies. (C) 2007 Elsevier B.V. All rights reserved.
    Alkuperäiskielienglanti
    LehtiThin Solid Films
    Vuosikerta516
    Numero10
    Sivut2948-2956
    Sivumäärä9
    ISSN0040-6090
    DOI - pysyväislinkit
    TilaJulkaistu - 2008
    OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

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