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Due to their unique semiconducting properties, conjugated porous organic polymers (CPOPs) have garnered significant interest in various photocatalysis applications. In this study, we synthesize three thiazolo[5,4‐d]thiazole (TzTz)‐linked CPOPs with three polyaryl rigid cores of benzene (CPOP1), pyrene (CPOP2), and triazine (CPOP3). We investigated their efficacy in catalyzing visible light‐driven C−N bond formation reactions, including C−N cross‐couplings between aryl bromides and amines and amination reactions from aryl bromides and sodium azides. Among the three, only CPOP2, combined with NiCl2 or Ni(dtbbpy)Cl2, effectively facilitated these transformations. Notably, CPOP2 exhibited photocatalytic activities approximately six times higher than its small molecular counterpart C1 in both reactions. The CPOP catalyst was easily recovered through centrifugal separation and reused for five catalytic cycles with minimal loss of activity. Theoretical calculations revealed that the deliberate structural design of polyaryl moieties could effectively tune the energy gap, which is crucial for the photocatalytic activity in organic reactions. This study, therefore, demonstrates a novel application of TzTz‐linked CPOPs for heterogeneous photocatalytic organic transformations. [ABSTRACT FROM AUTHOR]

Radiative cooling without using electricity is a green way for air-conditioning. However, most previously reported radiative cooling materials persist in cooling at low temperatures, resulting in added heating demand. This study presents a dual-layer porous superhydrophobic thermoplastic polyurethane/SiO2 (S-TPU/SiO2) sponge with a synergistic effect of radiative cooling and heat insulation. The S-TPU/SiO2 sponge exhibits an average reflectance of 94.5% in the solar band (0.3–2.5 μm), average emissivity of 96.8% in the atmospheric transparent window (8–13 μm), low thermal conductivity of 0.066 W/(mK) and excellent superhydrophobicity with contact angle of 153.4°. During summer, the S-TPU/SiO2 sponge achieves daytime cooling of up to 12.4 °C, maintaining excellent cooling. While in winter, it provides warming of 0.4 °C at night, effectively mitigating overcooling in cold environment. Additionally, the dual-layer porous structure made the sponge superior to common porous materials in mechanical properties with exceptional resilience, which opens up great potential applications in areas such as outdoor seat cushions and building envelope structures. [ABSTRACT FROM AUTHOR]

Conductive hydrogels, characterized by their unique features of flexibility, biocompatibility, electrical conductivity, and responsiveness to environmental stimuli, have emerged as promising materials for sensitive strain sensors. In this study, a facile strategy to prepare highly conductive hydrogels is reported. Through rational structural and synthetic design, silver nanowires (AgNWs) are incorporated into poly(N‐acryloyl glycinamide) (PNAGA) hydrogels, achieving high electrical conductivity (up to 0.88 S m−1), significantly enhanced mechanical properties, and elevated deformative sensitivity. Furthermore, surface modification with polyhexafluoropropylene oxide (PHFPO) has substantially improved the water retention capacity and dressing comfort of this hydrogel material. Based on the above merits, these hydrogels are employed to fabricate highly sensitive wearable strain sensors which can detect and interpret subtle hand and finger movements and enable precise control of machine interfaces. The AgNWs/PNAGA based strain sensors can effectively sense finger motion, enabling the control of robotic fingers to replicate the human hand's gestures. In addition, the high deformative sensitivity and elevated water retention performance of the hydrogels makes them suitable for flow sensing. These conceptual applications demonstrate the potential of this conductive hydrogel in high‐performance strain sensors in the future. [ABSTRACT FROM AUTHOR]

Recent interest has surged in using heterogeneous carriers to boost synergistic photocatalysis for organic transformations. Heterogeneous catalysts not only facilitate synergistic enhancement of distinct catalytic centers compared to their homogeneous counterparts, but also allow for the easy recovery and reuse of catalysts. This mini‐review summarizes recent advancements in developing heterogeneous carriers, including metal–organic frameworks, covalent–organic frameworks, porous organic polymers, and others, for synergistic catalytic reactions. The advantages of porous materials in heterogeneous catalysis originate from their ability to provide a high surface area, facilitate enhanced mass transport, offer a tunable chemical structure, ensure the stability of active species, and enable easy recovery and reuse of catalysts. Both photosensitizers and catalysts can be intricately incorporated into suitable porous carriers to create heterogeneous dual photocatalysts for organic transformations. Notably, experimental evidence from reported cases has shown that the catalytic efficacy of heterogeneous catalysts often surpasses that of their homogeneous analogues. This enhanced performance is attributed to the proximity and confinement effects provided by the porous nature of the carriers. It is expected that porous carriers will provide a versatile platform for integrating diverse catalysts, thus exhibiting superior performance across a range of organic transformations and appealing prospect for industrial applications. [ABSTRACT FROM AUTHOR]