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Issue 39, 2011
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Photocurrents at polarized liquid|liquid interfaces enhanced by a gold nanoparticle film

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Abstract

Photocurrent responses associated with the interfacial quenching of the photo-excited water-soluble zinc meso-tetra(4-carboxyphenyl)porphyrin (ZnTPPC) by ferrocene have been studied at a water|1,2-dichloroethane interface in the absence and in the presence of adsorbed gold nanoparticles. Upon addition of methanol, a mirror-like gold film is formed and an important enhancement of the photocurrent response can be observed. Intensity modulated photocurrent spectroscopy experiments (IMPS) have been performed, in order to deconvolute in the frequency domain the contribution from the competition between the recombination and the product separation arising after the electron transfer, and the attenuation associated with the resistance and interfacial capacitance (RCint) time constant of the cell.

Graphical abstract: Photocurrents at polarized liquid|liquid interfaces enhanced by a gold nanoparticle film

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Publication details

The article was received on 24 Jun 2011, accepted on 17 Aug 2011 and first published on 09 Sep 2011


Article type: Paper
DOI: 10.1039/C1CP22072A
Citation: Phys. Chem. Chem. Phys., 2011,13, 17704-17711
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    Photocurrents at polarized liquid|liquid interfaces enhanced by a gold nanoparticle film

    D. Schaming, M. Hojeij, N. Younan, H. Nagatani, H. J. Lee and H. H. Girault, Phys. Chem. Chem. Phys., 2011, 13, 17704
    DOI: 10.1039/C1CP22072A

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