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Figure 1. a)Schematic representation of POR-BHA COF structure. b)PXRD pattern of POR-BHA COF. c)¹³C SS NMR of POR-BHA COF. d-f) XPS spectra of POR-BHA COF. d)C 1s, e)N 1s, f)O 1s. g)TEM image of POR-BHA COF particles. h)SAED pattern of POR-BHA COF. i)SEM image of POR-BHA COF particles. j)Elemental mapping images of POR-BHA COF.

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Figure 2. Actuation and characterization of POR-BHA COF-LCP actuator. a)Infrared thermal imaging and photographic analysis of the POR-BHA COF-LCP actuator, illustrating reversible deformation in response to infrared irradiation. b)Time-dependent plot of bending angle for POR-BHA COF-LCP during actuation. c)Plot of bending angles for POR-BHA COF-LCP actuator under 808 nm light over 60 cycles. d)Splayed oriented POR-BHA COF-LCP film segmented at varying angles (I)90��, (II)0��, (III)45�� and (IV)135�� relative to the long axis. e)Tailoring angles and response behavior of POR-BHA COF-LCP actuators under NIR exposure.

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Figure 3. Actuation and characterization of POR-BHA COF-LCP. a)Sequential photographs illustrating the reversible deformation of POR-BHA COF-LCP in response to DCM vapor exposure. b)Response behavior of POR-BHA COF-LCP actuators with varied tailoring angles under DCM vapor. c)Time-dependent plot of bending angle for POR-BHA COF-LCP during actuation. d)Plot of bending angles of POR-BHA COF-LCP actuator over 60 cycles in DCM vapor. e)Stress-strain curves of POR-BHA COF-LCP compared with LCP. f)SEM image depicting the fracture morphology of POR-BHA COF-LCP. g)SEM image of the fracture surface of LCP.

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Figure 4. a)UV-vis spectra of POR-BHA COF and POR-BHA COF-LCP. b)Fluorescence spectra of POR-BHA COF and POR-BHA COF-LCP. c)Photograph of POR-BHA COF powder under natural light. d)Photo of POR-BHA COF powder under 365 nm UV light. e)Photograph of bionic flower under natural light. f)Photo of bionic flower under 365 nm UV light. g)Sequential images of bionic flower under NIR light. h)Photos capturing the response behavior of the bionic flower upon DCM vapor exposure. i)Images of POR-BHA COF-LCP gripper robot under NIR light. j)Images of POR-BHA COF-LCP light-control switch under NIR light.

  Փ����Ϣ��Dual-Stimuli-Responsive Covalent Organic Framework-Liquid Crystal Polymer Smart Actuator

Ru Liu, Zerui Li, Haokai Zhao, Lanying Zhang, Ruochen Lan, Qian Wang, Huai Yang

  Advanced Functional Materials

  DOI: 10.1002/adfm.202418627

  ԭ��朽ӣ�https://doi.org/10.1002/adfm.202418627