Volume 24, Issue 68 p. 18032-18042
Full Paper

Organic Dyes based on Tetraaryl-1,4-dihydropyrrolo-[3,2-b]pyrroles for Photovoltaic and Photocatalysis Applications with the Suppressed Electron Recombination

Jinfeng Wang

Jinfeng Wang

Department of Chemistry, Wuhan University, Wuhan, 430072 China

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Zhaofei Chai

Zhaofei Chai

Department of Chemistry, Wuhan University, Wuhan, 430072 China

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Siwei Liu

Siwei Liu

Department of Chemistry, Wuhan University, Wuhan, 430072 China

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Manman Fang

Manman Fang

Department of Chemistry, Wuhan University, Wuhan, 430072 China

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Kai Chang

Kai Chang

Department of Chemistry, Wuhan University, Wuhan, 430072 China

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Mengmeng Han

Mengmeng Han

Department of Chemistry, Wuhan University, Wuhan, 430072 China

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Li Hong

Li Hong

Michael Grätzel Centre for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074 China

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Prof. Hongwei Han

Prof. Hongwei Han

Michael Grätzel Centre for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074 China

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Prof. Qianqian Li

Corresponding Author

Prof. Qianqian Li

Department of Chemistry, Wuhan University, Wuhan, 430072 China

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Prof. Zhen Li

Corresponding Author

Prof. Zhen Li

Department of Chemistry, Wuhan University, Wuhan, 430072 China

Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072 China

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First published: 11 October 2018
Citations: 25

Graphical Abstract

TAPP dance: With the incorporation of tetraaryl-1,4-dihydropyrrolo-[3,2-b]pyrroles (TAPP) derivatives into organic dyes as novel electron donors, the optimized photovoltaic and photocatalysis performance is achieved by the efficient suppression of electron recombination in different conditions.

Abstract

A tetraaryl-1,4-dihydropyrrolo-[3,2-b]pyrroles (TAPP) moiety with the combination of two pyrrole rings and four phenyl moieties demonstrated strong electron-donating ability and nonplanar configuration simultaneously. Once incorporated into the organic dyes as a novel electron donor, it was beneficial for the enhancement of light-harvesting ability and suppression of electron recombination in the photovoltaic and photocatalysis systems. With the linkage of tunable conjugated bridges and electron acceptor, the corresponding organic dyes exhibited improved photovoltaic performance in dye-sensitized solar cells and facilitated photocatalytic hydrogen generation with a highest turnover number (TON) of 4337. Through the detailed investigation of relationship between molecular structures and photovoltaic/photocatalysis property, the connection and difference in molecular design for these two systems are well explained, with the aim to promote the application of dye-sensitized technology in various fields.

Conflict of interest

The authors declare no conflict of interest.