Conducting Metallopolymers as Precursors to Fabricate Palladium Nanoparticle/Polymer Hybrids for Oxygen Reduction

Authors

  • Kate R. Edelman,

    1. Department of Chemistry and Biochemistry and, Center for Nano and Molecular Science and Technology, The University of Texas at Austin, 1 University Station, A5300, Austin, TX 78712-0165, USA, Fax: 512-471-8648
    2. Current Address: Department of Chemistry, University of the Incarnate Word, CPO #311, San Antonio, TX 78209, USA
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  • Keith J. Stevenson,

    1. Department of Chemistry and Biochemistry and, Center for Nano and Molecular Science and Technology, The University of Texas at Austin, 1 University Station, A5300, Austin, TX 78712-0165, USA, Fax: 512-471-8648
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  • Bradley J. Holliday

    Corresponding author
    1. Department of Chemistry and Biochemistry and, Center for Nano and Molecular Science and Technology, The University of Texas at Austin, 1 University Station, A5300, Austin, TX 78712-0165, USA, Fax: 512-471-8648
    • Department of Chemistry and Biochemistry and, Center for Nano and Molecular Science and Technology, The University of Texas at Austin, 1 University Station, A5300, Austin, TX 78712-0165, USA, Fax: 512-471-8648.
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Abstract

The novel conducting metallopolymer [N,N′-((2,2′-dimethyl)propyl)bis(5-(2,2′-bithiophene-5-yl)salcylideniminato-palladium(II)]n prepared by electropolymerization provides a polymer matrix in which the palladium metal centers are evenly distributed. The metal centers embedded directly in the conducting metallopolymer backbone serve as seed points for size-controlled palladium nanoparticle (NP) growth of 3.8 to 4.9 nm NPs within the conducting metallopolymer film. The palladium NP/conducting metallopolymer hybrid material has demonstrated electrocatalytic behavior toward oxygen reduction with peak current densities around 400 μA/cm2 in acidic aqueous conditions. These results demonstrate a promising new method for the production of electrocatalytically active hybrid materials.

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