Pyrene-based covalent triazine framework towards high-performance sensing and photocatalysis applications

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  • ReceivedMar 6, 2020
  • AcceptedApr 12, 2020
  • PublishedJul 10, 2020



the National Natural Science Foundation of China(21875078,21975146)


This work was supported by the National Natural Science Foundation of China (21875078 and 21975146).

Interest statement

The authors declare that they have no conflict of interest.

Contributions statement

Cheng G and Wang K designed the experiments and synthesized the materials; Cheng G performed the chemical sensor experiments and the data analyses. Wang S conducted the experiment of photocatalytic CO2 reduction; Guo L and Wang Z performed the experiments of photocatalytic hydrogen evolution; Jiang J and Tan B contributed to the data analyses and discussion. Jin S conceived the project. Jin S and Cheng G co-wrote the manuscript.

Author information

Guang Cheng is a PhD student at the School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, China. His research focuses on the preparation of porous organic polymers and their applications.

Shangbin Jin is an associate professor at the School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, China. He received his PhD degree from the Institute for Molecular Science, the National Institutes of Natural Sciences, Japan, and afterward conducted his postdoc research at the National Institute for Materials Science, Japan. His current research interests mainly focus on the synthesis of covalent triazine frameworks and their photofunctional applications.

Supplementary data

Supplementary information

Supporting data are available in the online version of the paper.


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  • Figure 1

    (a) Representative structures of CTF-Py and CTF-TPE and their monomers. (b) FT-IR spectra and (c) CP-MAS-13C-NMR spectra of CTF-TPE (black) and CTF-Py (red); FE-SEM images of (d) CTF-TPE and (e) CTF-Py.

  • Figure 2

    (a) Nitrogen adsorption-desorption isotherms of CTF-Py (red) and CTF-TPE (blue) at 77.3 K, (for clarity, the isotherms of CTF-Py was shifted vertically by 150 cm3 g−1) and (b) pore size distribution calculated using DFT methods (slit pore models, differential pore volumes of CTF-HUSTs).

  • Figure 3

    (a) Fluorescence spectra of CTF-Py dispersed in DMF; (b) fluorescence spectra of CTF-Py dispersed in DMF after introduction of different concentrations of TNP.

  • Figure 4

    (a) UV-vis spectra of CTF-Py (blue) and CTF-TPE (red); (b) time-correlated photocurrents of CTF-TPE and CTF-Py under visible light irradiation; (c) band structure alignments of CTF-TPE and CTF-Py; (d) time courses of photocatalytic hydrogen evolution of CTF-Py (blue) and CTF-TPE (red) under visible light irradiation (>420 nm).

  • Figure 5

    (a) Time courses of the CO evolution for CTFs over 8 h under visible light (using 420 nm cut-off filter) in 35 mL CH3CN, 10 mL H2O, 5 mL TEOA, and 5 μmol Co(bpy)3Cl2 as a co-catalyst over 10 mg CTFs under ~80 kPa of pure CO2 gas; (b) recyclability of CTF-Py in the photocatalytic CO2 reduction for 5 h over five cycles.


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