Gels
·
2025
·Vol. 11
·期 9
·734
·
IF 5.3
Lihan Rong,Jiajiang Xie,Shigao Zhou,Tianqi Guan,Xinyi Fan,Wenjie Zhi,Rui Zhou,Feng Li,Yuyan Liu,Tingting Tang,Xiang Chen,Liyuan Zhang
The scalable fabrication of hydrogels with high toughness and low hysteresis is critically hindered by oxygen inhibition, which typically produces brittle, highly crosslinked (HC) networks. This study presents an oxygen-tolerant photoinduced electron transfer–reversible addition–fragmentation chain transfer (PET-RAFT) strategy for synthesizing highly entangled (HE) polyacrylamide hydrogels under open-vessel conditions. By optimizing the water-to-monomer ratio (W = 3.9) and introducing lithium chloride (LiCl) for spatial confinement, we achieved a fundamental shift in mechanical performance. The optimized HE hydrogel exhibited a fracture energy of 1.39 MJ/m3and a fracture strain of ~900%, starkly contrasting the brittle failure of the HC control (W = 20, C = 10−2) at ~50% strain. This represents an order-of-magnitude improvement in deformability. Furthermore, the incorporation of 15 wt% LiCl amplified the HE hydrogel’s fracture energy to 2.17 MJ/m3while maintaining its low hysteresis. This method enables the rapid, scalable production of robust, transparent thin films that exhibit dual passive cooling via radiative emission (>89% emissivity) and evaporation, rapid self-healing, and reliable strain sensing at temperatures as low as −20 °C. The synergy of entanglement design and confinement engineering establishes a versatile platform for manufacturing multifunctional hydrogels that vastly outperform their crosslink-dominated predecessors.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Chang-Wei Zhang,Jian-Zhong Ye,Xing-Ying Xue,Wen-Jun Li,Hong-Xia Chen,Cheng-Zhang Wang
Baphicacanthus cusia (B. cusia) was traditionally used as raw material to prepare indigo naturalis; however, many factories have been shut down by local governments on account of their serious pollution contributions. In this study, a green and sustainable production of B. cusia leaf extracts is proposed. Namely, new indigo extract (NIE) and phenolic acid extract (PAE) were produced in an integrated fashion by enzyme transformation coupled membrane separation and freeze-drying technologies. The small-scale process was optimized, and its feasibility was verified by a pilot experiment. Moreover, the physicochemical properties, dyeing effect, and wound-healing ability of the two extracts were systematically evaluated. The NIE could be obtained within 1 day and exhibited more than 20 times the indigo content and 1.8 times the pure indigo yield than indigo naturalis. Moreover, the NIE showed superior dye-uptake rate and washing and rubbing fastness on pure cotton poplin compared with natural indigo from India. The PAE exhibited excellent broad spectrum antibacterial activities, especially S. aureus (IC50 = 32 μg/mL). Significantly, the PAE had no toxicity and presented over 98% of the wound-healing rate on mice by increasing their collagen fiber content. All of above work is of great significance for the extension and sustained healthy development of a B. cusia industry chain.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Na Wang,Yibo Zhang,Zelin Meng,Mingyang Song,Heming Zhao,Yang Wang,Shuai Bai,Jianglei Hu,Fengwei Shi,Xia Yang
Addressing the low surface area and high charge recombination of graphitic carbon nitride (g-C 3 N 4 ), this study employs a synergistic carboxylation and MOF-loading strategy. Copper-based MOF (Cu-MOF) was uniformly loaded onto carboxylated spherical g-C 3 N 4 (C 3 N 4 –C) via a solvothermal method, creating a visible-light-responsive C 3 N 4 –C-MOF photocatalyst. Material characterization results indicate that the characteristic peak at 1632 cm −1 in the Fourier Transform Infrared Spectroscopy confirms the successful grafting of 4-carboxybenzoic acid (4-CBA). Carboxylation enhanced hydrophilicity and optimized surface charge, improving reactant adsorption. Photoelectrochemical tests showed significantly boosted visible light absorption, increased photocurrent density, and reduced EIS arc radius, confirming efficient interfacial charge separation. Photocatalytic hydrogen production experiments revealed that under simulated solar irradiation, the hydrogen production rate of C 3 N 4 –C-MOF2.0 reached up to 12.68 mmol g −1 h −1 , representing an approximately 1.68-fold increase compared to the unmodified C 3 N 4 -MOF. This work provides a novel approach for designing MOF/functionalized g-C 3 N 4 composites, advancing solar-driven hydrogen production.
✓ 已验证
产品关联
DOI
高影响因子
NATURE METHODS
·
2025
·
IF 32.1
Cao Ruijie,Li Yaning,Zhou Yao,Li Meiqi,Lin Fangrui,Wang Wenyi,Zhang Guoxun,Wang Gang,Jin Boya,Ren Wei,Sun Yu,Zhao Zhifeng,Zhang Wei,Sun Jing,Hou Yiwei,Xu Xinzhu,Hu Jiakui,Shi Wei,Fu Shuang,Liang Qianxi,Lu Yanye,Li Changhui,Zhao Yuxuan,Li Yiming,Kuang Dong,Wu Jiamin,Fei Peng,Qu Junle,Xi Peng
In fluorescence microscopy, a persistent challenge is the defocused background that obscures cellular details and introduces artifacts. Here, we introduce Dark sectioning, a method inspired by natural image dehazing for removing backgrounds that leverages dark channel prior and dual frequency separation to provide single-frame optical sectioning. Unlike denoising or deconvolution, Dark sectioning specifically targets and removes out-of-focus backgrounds, stably improving the signal-to-background ratio by nearly 10 dB and structural similarity index measure of images by approximately tenfold. Dark sectioning was validated using wide-field, confocal, two/three-dimensional structured illumination and one/two-photon microscopy with high-fidelity reconstruction. We further demonstrate its potential to improve the segmentation accuracy in deep tissues, resulting in better recognition of neurons in the mouse brain and accurate assessment of nuclei in prostate lesions or mouse brain sections. Dark sectioning is compatible with many other microscopy modalities, including light-sheet and light-field microscopy, as well as processing algorithms, including deconvolution and super-resolution optical fluctuation imaging.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）