Strathprints logo
Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

Electrochemiluminescence (ECL) sensing properties of water soluble core-shell CdSe/ZnS quantum dots/Nafion composite films

Dennany, Lynn and Gerlach, Matthias and O'Carroll, Shane and Keyes, Tia E. and Forster, Robert J. and Bertoncello, Paolo (2011) Electrochemiluminescence (ECL) sensing properties of water soluble core-shell CdSe/ZnS quantum dots/Nafion composite films. Journal of Materials Chemistry, 21 (36). pp. 13984-13990. ISSN 0959-9428

[img]
Preview
PDF - Published Version
Download (446Kb) | Preview

    Abstract

    Water soluble positively charged 2-(dimethylamino) ethanethiol (DAET)-protected core-shell CdSe/ZnS quantum dots (QDs) were synthesized and incorporated within negatively charged Nafion polymer films. The water soluble QDs were characterized using UV-visible and fluorescence spectroscopies. Nafion/QDs composite films were deposited on glassy carbon electrodes and characterized using cyclic voltammetry. The electrochemiluminescence (ECL) using hydrogen peroxide as co-reactant was enhanced for Nafion/QDs composite films compared to films of the bare QDs. Significantly, no ECL was observed for Nafion/QDs composite films when peroxydisulfate was used as the co-reactant, suggesting that the permselective properties of the Nafion effectively exclude the co-reactant. The ECL quenching by glutathione depends linearly on its concentration when hydrogen peroxide is used as the co-reactant, opening up the possibility to use Nafion/QDs composite films for various electroanalytical applications.

    Item type: Article
    ID code: 33610
    Keywords: oxygen reduction reaction, aqueous solution, oxidative stress, spherical assemblies, electrodes, carbon nanotubes, glutathione, nafion, Physical and theoretical chemistry, Materials Chemistry, Chemistry(all)
    Subjects: Science > Chemistry > Physical and theoretical chemistry
    Department: Faculty of Science > Pure and Applied Chemistry
    Related URLs:
      Depositing user: Pure Administrator
      Date Deposited: 17 Nov 2011 10:59
      Last modified: 14 Jun 2014 05:08
      URI: http://strathprints.strath.ac.uk/id/eprint/33610

      Actions (login required)

      View Item

      Fulltext Downloads: