Electrochemical and Photophysical Properties of Ruthenium(II) Bipyridyl Complexes with Pendant Alkanethiol Chains in Solution and Anchored to Metal Surfaces

  1. D'Aleo, Anthony 1
  2. Williams, Rene M. 1
  3. Chriqui, Yoel 2
  4. Iyer, Vijay M. 2
  5. Belser, Peter 2
  6. Vergeer, Frank 3
  7. Ruiz, Virginia 4
  8. Unwin, Patrick R. 4
  9. Cola, Luisa De 13
  1. 1 University of Amsterdam
    info

    University of Amsterdam

    Ámsterdam, Holanda

    ROR https://ror.org/04dkp9463

  2. 2 University of Fribourg
    info

    University of Fribourg

    Friburgo, Suiza

    ROR https://ror.org/022fs9h90

  3. 3 University of Münster
    info

    University of Münster

    Münster, Alemania

    ROR https://ror.org/00pd74e08

  4. 4 University of Warwick
    info

    University of Warwick

    Coventry, Reino Unido

    ROR https://ror.org/01a77tt86

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Journal:
The Open Inorganic Chemistry Journal

ISSN: 1874-0987

Year of publication: 2007

Volume: 1

Issue: 1

Pages: 26-36

Type: Article

DOI: 10.2174/1874098700701010026 GOOGLE SCHOLAR lock_openOpen access editor

More publications in: The Open Inorganic Chemistry Journal

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Abstract

Luminescent ruthenium trisbipyridine complexes containing one or two mercapto-alkyl chain(s) on one of the bipyridyl unitshave been synthesized through a new strategy. The electrochemical and photophysical properties, determined in solution and in the solidstate were compared. Deposition on electrode surfaces (gold, platinum and indium tin oxide) was realized by self-assembly and the resulting adsorbed layers were characterized by electrochemistry and fluorescence confocal microscopy. Voltammetric measurements ofthe films, in aqueous and in acetonitrile solution, allowed the determination of the surface coverages and the oxidation potentials of thecomplexes. The effect of the number of chains and the chain length in the complexes is highlighted. Emission of the adsorbed complexeswas strongly quenched by the metallic surfaces, while confocal microscopy images showed aggregate formation on a m length scale.The latter results provide considerable insight into the nature of the adsorbed layers and support deductions from the voltammetric data.