Photocurrents at polarized liquidliquid interfaces enhanced by a gold nanoparticle film

Delphine Schaming; Mohamad Hojeij; Nathalie Younan; Hirohisa Nagatani; Hye Jin Lee; Hubert H. Girault

doi:10.1039/c1cp22072a

Photocurrents at polarized liquidliquid interfaces enhanced by a gold nanoparticle film

Delphine Schaming
, Mohamad Hojeij
, Nathalie Younan
, Hirohisa Nagatani
, Hye Jin Lee
, Hubert H. Girault

Swiss Federal Institute of Technology Lausanne
Kanazawa University

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

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 water1,2-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 (RC_int) time constant of the cell. This journal is

Original language	English
Pages (from-to)	17704-17711
Number of pages	8
Journal	Physical Chemistry Chemical Physics
Volume	13
Issue number	39
DOIs	https://doi.org/10.1039/c1cp22072a
State	Published - 21 Oct 2011

Access to Document

10.1039/c1cp22072a

Cite this

@article{0226f64406ff444f80599340a67201de,

title = "Photocurrents at polarized liquidliquid interfaces enhanced by a gold nanoparticle film",

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 water1,2-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. This journal is",

author = "Delphine Schaming and Mohamad Hojeij and Nathalie Younan and Hirohisa Nagatani and Lee, \{Hye Jin\} and Girault, \{Hubert H.\}",

year = "2011",

month = oct,

day = "21",

doi = "10.1039/c1cp22072a",

language = "English",

volume = "13",

pages = "17704--17711",

journal = "Physical Chemistry Chemical Physics",

issn = "1463-9076",

publisher = "Royal Society of Chemistry",

number = "39",

}

TY - JOUR

T1 - Photocurrents at polarized liquidliquid interfaces enhanced by a gold nanoparticle film

AU - Schaming, Delphine

AU - Hojeij, Mohamad

AU - Younan, Nathalie

AU - Nagatani, Hirohisa

AU - Lee, Hye Jin

AU - Girault, Hubert H.

PY - 2011/10/21

Y1 - 2011/10/21

N2 - 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 water1,2-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. This journal is

AB - 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 water1,2-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. This journal is

UR - https://www.scopus.com/pages/publications/80053472910

U2 - 10.1039/c1cp22072a

DO - 10.1039/c1cp22072a

M3 - Article

C2 - 21909509

AN - SCOPUS:80053472910

SN - 1463-9076

VL - 13

SP - 17704

EP - 17711

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 39

ER -

Photocurrents at polarized liquidliquid interfaces enhanced by a gold nanoparticle film

Abstract

Access to Document

Other files and links

Fingerprint

Cite this