Conjugated microporous polymers for near-infrared photothermal control of shape change

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  • ReceivedMar 11, 2020
  • AcceptedMay 20, 2020
  • PublishedAug 11, 2020



the National Natural Science Foundation of China(51503231,21374136)

Guangdong Innovative and Entrepreneurial Research Team Program(2013S086)

and the Fundamental Research Funds for the Central Universities(17lgjc03,18lgpy04)


This work was supported by the National Natural Science Foundation of China (51503231 and 21374136), Guangdong Innovative and Entrepreneurial Research Team Program (2013S086), and the Fundamental Research Funds for the Central Universities (17lgjc03 and 18lgpy04).

Interest statement

The authors declare that they have no conflict of interest.

Contributions statement

Huang H and Liang G designed the project. Wu J, Wu Y and He Z performed the experiments. Huang H and Wu J co-wrote the paper. All authors contributed to the general discussion.

Author information

Jialong Wu got his BSc and MSc degrees from the School of Chemistry and Chemical Engineering, Sun Yat-sen University. He is a PhD candidate at the School of Materials Science and Engineering, Sun Yat-sen University. His research interests focus on the application of porous polymers in environment and energy conversion.

Huahua Huang is an associate professor at the School of Materials Science and Engineering, Sun Yat-sen University. She got her PhD degree from the Institute of Chemistry, Chinese Academy of Sciences in 2010. Her research interest mainly focuses on the syntheses and applications of functional polymers and shape memory polymers.

Guodong Liang is a professor at the School of Materials Science and Engineering, Sun Yat-sen University, China. He received his PhD degree from Zhejiang University in 2007. His research interest mainly focuses on constructing functional materials and exploiting their applications.

Supplementary data

Supplementary information

Supporting data are available in the online version of the paper, including TGA, nitrogen sorption isotherm and pore size distribution curves, and NIR emission spectra of CMPs, calculation process of photothermal conversion efficiency, and DSC, TGA, DMA and strain-stress curves of SMPU/CMP composite films.


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  • Figure 1

    (a) FT-IR spectra and (b) 13C CP/MAS NMR spectra of the CMPs.

  • Scheme 1

    Schematic illustration of the synthesis of CMPs by using commercial aromatic monomers in the presence of AlCl3 and CH2Cl2.

  • Figure 2

    (a) WXRD patterns and (b) Raman spectra of the polymer networks.

  • Figure 3

    UV-vis spectra of (a) the polymer networks and (b) the monomers.

  • Figure 4

    (a) Time-dependent photothermal conversion curves (808 nm, 1.0 W cm−2) of the polymers. (b) Photothermal cyclic curves of Poly-TPE (808 nm, 1.0 W cm−2). (c) Temperature rises of Poly-TPE at different NIR laser powers. Inset shows the average maximum temperature (Tmax) as a function of light intensity. (d) IR camera images of Poly-TPE patterned letters SYSU (808 nm, 1.0 W cm−2).

  • Figure 5

    (a) Optical and IR thermal images of SMPU and SMPU/CMP-3 films under 808 nm laser irradiation. (b) Local temperature as a function of irradiation time for SMPU/CMP-3 film (laser irradiation: 808 nm). (c) The temperature as a function of light intensity for SMPU and composite films with different CMP contents. (d) Spatial control of the shape recovery of a SMPU/CMP-5 strip.

  • Table 1   Photothermal conversion parameters of the CMPs


    Tmaxa (°C)

    τsb (s)


    ηd (%)





















    Equilibrium temperature under 1.0 W cm−2 irradiation; b) system constant time; c) UV absorbance at 808 nm; d) NIR photothermal conversion efficiency.

  • Table 2   Thermal properties of SMPU film and SMPU/CMP composites films


    Tm a (°C)

    ΔHm a (J g−1)

    Xcb (%)

















    Melting point and melting enthalpy of PCL segment; b) crystallinity of PCL segment was obtained by dividing the measured heat of fusion by the theoretical data (135 J g−1) for pure PCL.


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