Photocurrents at polarized liquid|liquid interfaces enhanced by a gold nanoparticle film.
Photocurrents at polarized liquid|liquid interfaces enhanced by a gold nanoparticle film.
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金纳米颗粒膜增强了偏振液体界面处的光电流。
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
H. Girault
中科院分区：
文献类型：
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作者：
D. Schaming;M. Hojeij;N. Younan;H. Nagatani;Hyejin Lee;H. Girault
研究了二茂铁光激发水溶性中四（4-羧基苯基）锌卟啉（ZnTPPC）在1,2-二氯乙烷界面上吸附金纳米粒子的存在和不存在情况下的光电流响应。在加入甲醇后，形成镜面状的金膜，并且可以观察到光电流响应的重要增强。为了在频域中解卷积电子转移后产生的复合和产物分离之间的竞争的贡献，以及与电池的电阻和界面电容（RC(int)）时间常数相关的衰减，进行了强度调制光电流谱实验（IMPS）。
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 (RC(int)) time constant of the cell.