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CO2 cycloaddition to epoxides is an effective and economical utilization method to alleviate the current excessive CO2 emission situation. The development of catalysts with both high catalytic efficiency and high recyclability is necessary but challenging. In this context, a heterogeneous catalyst was synthesized based on a zinc‐ion‐crosslinked polymer with intrinsic microporosity (PIM‐1). The high microporosity of PIM‐1 promoted a high Zn2+ loading rate. Additionally, the relatively stable ionic bond formed between Zn2+ and the PIM‐1 framework through electrostatic interaction ensured high loading stability. In the process of CO2 cycloaddition with propylene epoxide, an optimized conversion of 90 % with a turnover frequency as high as 9533 h−1 could be achieved within 0.5 h at 100 °C and 2 MPa. After 15 cycles, the catalytic efficiency did not demonstrate a significant decline, and the catalyst was able to recover most of its activity after Zn2+ reloading. This work thereby provides a strategically designed CO2 conversion catalyst based on an ionic crosslinked polymer with intrinsic microporosity.

A large-scale and low-cost method for producing highly ordered honeycomb-patterned film using commonly commercialized polymers was proposed. This method provides the ability to prepare honeycomb-patterned films in normal indoor environments without the need to maintain a certain relative humidity and without the addition of stabilizers. This method can produce a uniform and highly ordered honeycomb structure in semiclosed substrates in areas with limited humidity and limited curvature. At the same time, it can be used for large surfaces and on objects of different shapes. The pore size could be controlled by choosing an optimal solvent–nonsolvent ratio and modulating the experimental processing conditions. A film with thickness of 800 μm, prepared using 5 wt % PS in CH2Cl2 with 1 wt % propylene glycol, showed a highly ordered honeycomb pattern and hence proved to be the most suitable formulation for manufacturing PS honeycomb-patterned films. This approach can be applied to manufacture honeycomb-patterned film on a large scale with significantly improved hydrophobic properties. The integration of low-cost and large-scale fabrication of ordered honeycomb-patterned film has widespread application potential for future commercial technology equipment that needs certain functions.

In this work, thin film composite polyamide (PA) membranes are modified by polyethyleneimine (PEI) and 2,6‐diaminopyridine (DAP) through sequential interfacial polymerization to fabricate contact active antibacterial membranes. The modified membranes show improved hydrophilicity and enhancement of zeta potential. Upon tethering with PEI and DAP onto the PA membranes, the membrane flux increases from 35.7 to 46.7 and 50.0 L m−2 h−1, respectively. Further the salt rejection rate improves from 96.6% to 98.0% and 98.8%, respectively. The PA‐PEI membranes have a better antibacterial performance than PA‐DAP, with a bacteria killing ratio for both Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) over 96.7%, while a commercial LC LE‐4040 membrane presents bacteria killing ratio of 13.3% for E. coli and 8.4% for S. aureus, respectively.

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Open wounds infected by bacteria are gearing increasing attention whose treatment are complicated by the appearance of multidrug-resistant bacteria. Photothermal therapy, kill bacteria through the photothermal conversion, has been extensively studied. Whereas, the high cost and low yield of the active ingredients have limited its widespread use. To address this challenge, the template assisted coating strategy was adopted to prepare a biocompatible photothermal agent, where the hybrid was prepared via in situ copolymerization of 5,10,15,20-tetrakis(4-ethynylphenyl)-21H,23H-porphine (Por) on the surface of ZIF-8 template. The introduction of ZIF-8 in the inner of the hybrid, could not only lower the cost of photosensitizer (i. e., the porphyrin), but also maintain the activity of photosensitizer (PS) finely, which could be used directly as the antimicrobial dressing. In vitro experiments validated the asprepared hybrid presents high-efficiency PTT antibacterial activity. Meanwhile, in vivo chronic wound-healing experiments on mice verified the as-synthesized hybrid also delivers excellent anti-infection and tissue remodeling activities. This work highlights the potential of low-cost hybrid-based multifunctional biomaterials in the treatment of skin injuries in clinical settings.

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