SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-3789-x
Wearable sensors have attracted significant attention due to their superior sensitivity, safety, and adaptability compared with conventional detection technologies. However, developing sustainable sensing materials that combine excellent performance with environmental friendliness remains a significant challenge. In this study, Juncus effusus (JE), a natural fiber featuring a unique internal three-dimensional (3D) network structure, was employed as the substrate. Conductive polyaniline was loaded onto the JE structure to impart electrical conductivity, and Ecoflex encapsulation provided high elasticity. Based on this approach, a JE-based resistive flexible sensor (PHE-JE) was successfully fabricated. The PHE-JE sensor exhibits high stability under various strain conditions, along with excellent flexibility and durability. Moreover, benefiting from its complex 3D structure and synergistic material interactions, the PHE-JE sensor enables accurate detection of diverse motion types, showing promising potential for future wearable sensing applications.
Journal of Environmental Engineering Technology•2026•DOI: 10.13205/j.hjgc.202608007
The Minjiang River Basin, subjected to combined pollution from domestic, agricultural, and industrial sources, has become a typical sensitive area for studying the environmental behavior of emerging contaminants such as antibiotics. This study conducted a cross-year comparative analysis of the composition and concentrations of antibiotics in water samples from nine sampling sites during the dry season in November 2022 and 2024. The findings revealed: 1) After the implementation of the "National Action Plan for Reducing Antimicrobial Use in Livestock", the detection concentrations of tetracycline antibiotics (TCs) decreased (e.g., doxycycline concentrations dropped from 7.75 ng/L to undetectable levels), and the mixed risk quotient (MRQ) across the entire basin transitioned from medium to low risk. However, lincomycin (up to 4.6 ng/L), clarithromycin (1.3 ng/L), and florfenicol (0.6 ng/L) have emerged, indicating an increasing hidden ecological risk from substitution. 2) High-concentration antibiotic zones transferred from urban residential areas in 2022 to intensive aquaculture zones and upstream reservoir areas in 2024. The reduction in dry-season water flow intensified pollutant accumulation, synergistically enhancing the effects of tidal drag. Additionally, the conversion of agricultural land to aquaculture ponds led to increased use of alternative drugs (e.g., sulfamethazine), while policy interventions mitigated the exacerbation of urban antibiotic pollution by construction land. This study elucidates the migration patterns of antibiotic pollution under the synergistic effects of policy regulation and natural processes, emphasizing the need to address hidden risks of substitute drugs and the driving role of land-use changes, providing scientific basis for watershed-scale risk assessment and precise management of emerging pollutants.
SCIENCE CHINA Materials•2025•DOI: 10.1007/s40843-025-3433-x
The design of photosensitizers that generate hydroxyl radicals (·OH) from water and achieve efficient charge separation (CS) is critical for hypoxic tumor photodynamic therapy (PDT). However, such ·OH photo-generators are scarcely reported, particularly those based on simple D-π-A scaffolds. This work presents TPE-SPyCx@BSA, constructed via co-assembly of a series of D-π-A tetraphenylpyridine salts (TPE-SPyCx) with bovine serum albumin (BSA), which initiates photocatalytic water oxidation to ·OH and enables efficient charge separation for oxygen-independent PDT. Electron paramagnetic resonance (EPR) trapping confirmed high-efficiency ·OH generation, and isotope tracing experiments revealed that the oxygen source of ·OH originates exclusively from H2O. The calculated valence band (VB) potential of TPE-SPyCx@BSA meets the thermodynamic conditions for ·OH production via water oxidation. Transient absorption spectra deciphered that the charge-separated state is realized after co-assembly, ensuring electron transfer to generate ·OH via an oxygen-independent pathway. TPE-SPyCx@BSA exhibited superb photocytotoxicity even under severe anoxic conditions and excellent antitumor efficacy in in vivo mouse models. This work provides a strategy for constructing oxygen-independent photodynamic agents, opening an avenue for effective PDT against hypoxic tumors.