Photoelectrochemical switch based on cis-Azobenzene chromophore modified TiO2 nanowires

Xiaojun Lv; Haixin Chang; Hao Zhang

doi:10.1016/j.optcom.2011.06.047

Photoelectrochemical switch based on cis-Azobenzene chromophore modified TiO₂ nanowires

Xiaojun Lv, Haixin Chang, Hao Zhang

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	4991-4995
Number of pages	5
Journal	Optics Communications
Volume	284
Issue number	20
DOIs	https://doi.org/10.1016/j.optcom.2011.06.047
Publication status	Published - 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

Access to Document

10.1016/j.optcom.2011.06.047

Cite this

@article{43284132fb894bb9bf39846c1ac8bba6,

title = "Photoelectrochemical switch based on cis-Azobenzene chromophore modified TiO2 nanowires",

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.",

keywords = "Azobenzene modified, Higher photocurrent, Photoelctrochemical switch, TiO nanowires",

author = "Xiaojun Lv and Haixin Chang and Hao Zhang",

note = "Funding Information: This work was financially supported by the National Natural Science Foundation of China (No. 20975060 ), National Basic Research Program of China (No. 2007CB310500 ). Thanks professor Jinghong Li for the advice and suggestion of experiments and discussion. H.X.C. acknowledges the WPI Initiative funding for young researchers from JSPS and MEXT, Japan.",

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T1 - Photoelectrochemical switch based on cis-Azobenzene chromophore modified TiO2 nanowires

AU - Lv, Xiaojun

AU - Chang, Haixin

AU - Zhang, Hao

N1 - Funding Information: This work was financially supported by the National Natural Science Foundation of China (No. 20975060 ), National Basic Research Program of China (No. 2007CB310500 ). Thanks professor Jinghong Li for the advice and suggestion of experiments and discussion. H.X.C. acknowledges the WPI Initiative funding for young researchers from JSPS and MEXT, Japan.

PY - 2011/9/15

Y1 - 2011/9/15

N2 - 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.

AB - 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.

KW - Azobenzene modified

KW - Higher photocurrent

KW - Photoelctrochemical switch

KW - TiO nanowires

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