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To effectively cope with the freshwater crisis, it is imperative to develop advanced remediation materials capable of radioactive iodine capture and pathogenic microorganism inactivation, avoiding the generation of secondary pollution. Herein, cyclic tripolymerization-derived porous organic polymers (POPs) (WFMC-1 to WFMC-5) were prepared via green, rapid, and economical solid-phase synthesis using a catalytic amount of PTSA·H2O (p-toluenesulfonic acid monohydrate, PTSA·H2O). This "one stone two birds" strategy realized the bidirectional treatment of environmental pollution from both the source and the post-treatment. The ferrocene-based POP (WFMC-1) with ultrafine Fe2O3 nanoparticles formed during the polymerization could take advantage of the inherent characteristic of nuclear wastewater, presenting a satisfying peroxidase-like activity in the nuclear waste, which was enhanced under the laser stimulations. WFMC-1 with photothermal-enhanced enzymatic antibacterial capacity could not only effectively eradicate the bacteria but also possessed excellent biosafety to promote the healing of infectious wounds. Additionally, all of these five POPs could act as stable and reproducible iodine adsorbents with excellent iodine capture capacity, which could realize the rapid removal of radioactive iodine from water with almost no performance decay for at least five cycles. This general synthesis strategy provides a simple and environmentally benign method for the preparation of POPs for environmental remediation. [ABSTRACT FROM AUTHOR]

Carbon films prepared by polyimide (PI) films treated under 1500°C exhibit favorable thermal conductivity. However, the bonds of carbon films will fracture and recombine which will cause shrinking and forming defects. The flexibility of the carbon films will be greatly reduced, and then affect the application of the carbon films in the field of thermal conduction. When the films prepared by the graphene oxide/polyimide (GO/PI) composite films and the reduced graphene oxide/polyimide (rGO/PI) composite films, respectively, rGO and GO can fill the defects, then increasing the flexibility of the carbon films and inducing the carbonation process. Because of the high thermal conductivity and the six-membered ring structure of rGO and GO, the carbonization temperature will decrease and save costs. When the composite films treated under 1500°C, the thermal conductivity increases with the content of rGO and GO. There are connections between PI and graphene. As the amount of rGO and GO increases, the strong interactions between the rGO or GO and PI lead to contact that enhances its thermal conductivity. However, the rGO and GO have different effects on the films flexibility and thermal conductivity and the differences will be described in the article. [ABSTRACT FROM AUTHOR]