Effects of plasmonic field due to gold nanoparticles and magnetic field on photocurrents of zinc porphyrin-viologen linked compound-gold nanoparticle composite films

Hiroaki Yonemura, Tomoki Niimi, Sunao Yamada

    研究成果: Contribution to journalArticle査読

    5 被引用数 (Scopus)

    抄録

    Composite films of zinc-porphyrin-viologen (ZnP-V2+) linked compound containing six methylene group [ZnP(6)V]-gold nanoparticles (AuNP) were fabricated by combining electrostatic layer-by-layer adsorption and the Langmuir-Blodgett method. The anodic photocurrents of the ZnP(6)V-AuNP composite films are higher than those of the ZnP(6)V films. The large photocurrents in ZnP(6)V-AuNP composite films are most likely attributable to the combination of localized surface plasmon resonance due to AuNP and photoinduced intramolecular electron transfer from excited state of ZnP to V2+. The photocurrents of the ZnP(6)V-AuNP composite films increase in the presence of magnetic field. The photocurrents increase with low magnetic fields (B : 150 mT) and are almost constant under high magnetic fields (B ; 150 mT). Magnetic field effects (MFEs) were clearly observed for both ZnP(6)V-AuNP composite films and ZnP(6)V films. The MFEs can be explained by a radical pair mechanism.

    本文言語英語
    論文番号03DD05
    ジャーナルJapanese Journal of Applied Physics
    55
    3
    DOI
    出版ステータス出版済み - 3 2016

    All Science Journal Classification (ASJC) codes

    • 工学(全般)
    • 物理学および天文学(全般)

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