Citation: Jinting Shang, Hanying Tang, Hongwei Ji, Wanhong Ma, Chuncheng Chen, Jincai Zhao. Synthesis, characterization, and activity of a covalently anchored heterogeneous perylene diimide photocatalyst[J]. Chinese Journal of Catalysis, ;2017, 38(12): 2094-2101. doi: 10.1016/S1872-2067(17)62960-7 shu

Synthesis, characterization, and activity of a covalently anchored heterogeneous perylene diimide photocatalyst

Jinting Shang ^a,b, ,
Hanying Tang ^a,b ,
Hongwei Ji ^a,b ,
Wanhong Ma ^a,b ,
Chuncheng Chen ^a,b ,
Jincai Zhao ^a,b

a Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
b University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 18 October 2017
Revised Date: 1 November 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (21525729, 21590811, 21521062, 2177168), the "Strategic Priority Research Program" of the Chinese Academy of Sciences (XDA09030200), and the "CAS Interdisciplinary Innovation Team Program".

The consecutive two-photon photocatalytic behavior of perylene diimide (PDI) enables it to catalyze photoreduction reactions that are thermodynamically unfavorable via single-photon processes. In this work, we developed a heterogeneous PDI photocatalyst by covalently binding PDI molecules on the surface of nanosilica. This photocatalyst structure overcomes the intrinsic limitation of the low solubility of PDI, but retains its consecutive two-photon photocatalytic property. Detailed characterization of the photocatalyst by techniques such as thermogravimetric analysis, solid-state nuclear magnetic resonance spectroscopy, and Fourier transform infrared spectroscopy indicated that the PDI molecules were anchored covalently on the surface of nanosilica. The obtained photocatalyst reduced aryl halides under visible-light irradiation in polar organic solvent and in water. The present study provides a promising strategy to realize two-photon activity of PDI in common solvents for photocatalytic appli-cations.
- Visible light,
- Photocatalysis,
- Nanosilica,
- Perylene diimide,
- Debromination
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