Photoelectrochemical switch based on cis-Azobenzene chromophore modified TiO2 nanowires

Xiaojun Lv, Haixin Chang, Hao Zhang

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    Carboxylated-azobenzene chromophore modified TiO2 nanowire composites were prepared and characterized. Photocurrent measured with monochromatic incident light irradiation results showed that azobenzene modified TiO2 nanowire electrode had obviously higher photocurrent and broader visible light response covering range of 350-650 nm, and the wavelength position corresponding to the maximum photocurrent was red shift to about 470 nm. After alternate irradiation with UV and visible light, the azobenzene modified TiO2 nanowire electrode exhibited obvious photoelectrochemical switching properties. Furthermore, the photocurrent under visible light irradiation was much higher than that under UV irradiation due to the cis-to-trans isomerization transformation of azobenzene chromophore.

    Original languageEnglish
    Pages (from-to)4991-4995
    Number of pages5
    JournalOptics Communications
    Volume284
    Issue number20
    DOIs
    Publication statusPublished - 2011 Sep 15

    Keywords

    • Azobenzene modified
    • Higher photocurrent
    • Photoelctrochemical switch
    • TiO nanowires

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics
    • Physical and Theoretical Chemistry
    • Electrical and Electronic Engineering

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