ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Ruizi Wu,Tianxue Zhu,Yimeng Ni,Che Wu,Wenyi Wang,Kunyang Zhao,Jianying Huang,Yuekun Lai
Although conductive hydrogels have emerged as promising materials for developing highly flexible sensors in recent years, traditional hydrogels are prone to swelling, which significantly compromises sensor performance. To address this issue, a non-swelling hydrogel is prepared through a one-step radical polymerization of acrylic acid (AA), hydroxyethyl methacrylate (HEMA), tannic acid (TA), and quaternized chitosan (QCS) in aqueous water. The resultant poly(AA-HEMA)-QCS-TA (PAHCT) hydrogel features a highly crosslinked network, attributed to the formation of multiple hydrogen bonds among the abundant hydroxyl and carboxyl groups in AA, TA, and QCS, the electrostatic interactions between poly(AA-HEMA) and QCS, as well as polymer chain entanglements. This innovative architecture significantly enhances the anti-swelling ability of the PAHCT conductive hydrogel, achieving an equilibrium swelling ratio of 5.5% in water, along with remarkable tensile properties, reaching an elongation of 990%. Furthermore, the introduction of TA further improves the hydrogel's adhesion, ensuring its durability for long-term service. Consequently, strain sensors based on the non-swelling PAHCT hydrogel are capable of effectively monitoring human activities across various strain range and enabling reliable underwater communication. These findings open new avenues for the development of wearable sensors in amphibious environments, broadening the application scope of wearable electronics.
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Plants-Basel
·
2025
·Vol. 14
·期 1
·133
·
IF 4.1
Wang Yu,Xiangru Zhou,Jinhao Meng,Hongwei Xu,Xiaofu Zhou
The depletion of the ozone layer has resulted in elevated ultraviolet-B (UV-B) radiation levels, posing a significant risk to terrestrial plant growth.Rhododendron chrysanthumPall. (R. chrysanthum), adapted to high-altitude and high-irradiation environments, has developed unique adaptive mechanisms. This study exposedR. chrysanthumto UV-B radiation for two days, with an 8 h daily treatment, utilizing metabolomic and transcriptomic analyses to explore the role of WRKY transcription factors in the plant’s UV-B stress response and their regulation of flavonoid synthesis. UV-B stress resulted in a significant decrease in rETR and Ik and a significant increase in 1-qP. These chlorophyll fluorescence parameters indicate that UV-B stress impaired photosynthesis inR. chrysanthum. Faced with the detrimental impact of UV-B radiation,R. chrysanthumis capable of mitigating its effects by modulating its flavonoid biosynthetic pathways to adapt positively to the stress. This study revealed changes in the expression of 113 flavonoid-related metabolites and 42 associated genes, with WRKY transcription factors showing significant correlation with these alterations. WRKY transcription factors can influence the expression of key enzyme genes in the flavonoid metabolic pathway, thereby affecting metabolite production. A theoretical reference for investigating plant stress physiology is provided in this work, which also offers insights into the stress responses of alpine plants under adverse conditions.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
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IF 8.5
Zi Feng He,Chang Li,Tian Xing Fang,Dong Yu Zhu,Qianyun Deng,Weifeng Liu,Xueqing Qiu
Polyurethanes are widely utilized across various fields. In the pursuit of sustainable development, current research prioritizes the development of bio-based, environmentally friendly polyurethanes. Wood flour, a type of biomass waste, faces significant challenges in achieving high-value utilization. In this study, wood flour was pretreated with sodium hydroxide solution to generate extracted lignin (Elig) and alkali-treated wood flour (AWF), which were subsequently employed to fabricate biodegradable polyurethane elastomers. Elig was further modified with polycaprolactone (PCL) to enhance its reactivity and flexibility, serving as a biological macromolecule crosslinker in the synthesis of lignin-based polyurethane [PU(Plig)]. Tough polyurethane composite elastomers were then obtained by incorporating AWF into PU(Plig). The resulting PU composite elastomer, PU(Plig@AWF), containing strong interfacial interaction between Elig and AWF, exhibited high toughness (188.15 MJ/m 3 ), excellent UV resistance (with stress and strain retention rates of 77.92 % and 77.07 %, respectively, after 96 h of ultraviolet aging), and outstanding biodegradability (with a mass loss of 19.06 % observed after 50 days of soil degradation testing). Additionally, leveraging the unique characteristics of lignin and wood flour (WF), the elastomer demonstrated remarkable light/thermal-electric conversion capabilities, effectively powering a fan. This study advances the development of biomass-based, multifunctional polyurethane elastomers with enhanced cost-efficiency.
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Foods
·
2024
·Vol. 13
·期 15
·2385
·
IF 4.7
Mian Wang,Yiting Wang,Muhammad Bilal,Chong Xie,Pei Wang,Xin Rui,Runqiang Yang
Isoflavones, a class of substances with high biological activity, are abundant in soybeans. This study investigated isoflavone biosynthesis in soybean cell suspension cultures under UV-B radiation. UV-B radiation enhanced the transcription level and activity of key enzymes involved in isoflavone synthesis in cell suspension cultures. As a result, the isoflavone contents significantly increased by 19.80% and 91.21% in hypocotyl and cotyledon suspension cultures compared with the control, respectively. Meanwhile, a significant difference was observed in the composition of isoflavones between soybean hypocotyl and cotyledon suspension cultures. Genistin was only detected in hypocotyl suspension cultures, whereas glycitin, daidzein, and genistein accumulated in cotyledon suspension cultures. Therefore, UV-B radiation exhibited tissue-specific regulation of isoflavone biosynthesis in soybean cell suspension cultures. The combination of suspension cultures and abiotic stress provides a novel technological approach to isoflavone accumulation.
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FOOD HYDROCOLLOIDS
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2024
·
IF 11
Xiaojia Wang,Hongyu Zhu,Yina Yang,Guoqiao Lai,Xiongfa Yang
Food safety and food freshness issues have become important concerns for consumers and hydrogels with high antibacterial efficiency, low toxicity and pH−sensitive colorimetric intelligence are one of candidates to meet the requirement of food package and food spoilage monitoring. Nevertheless, hydrogels prepared only by assembling the ingredients with non−covalent interactions through time−consuming molding process usually encounter drawbacks such as relatively poor mechanical properties, stability and thermal stability, which always restrict their further applications. To overwhelm these shortcomings, UV−curable choline chloride (ChCl) and bromophenol red (BR) covalent functionalized antibacterial and pH−sensitive cross−linked hydrogels (UV−hydrogels) were developed in this paper. The UV−hydrogels possessed good thermal stability because the initiated thermal decomposition temperature (T d5 ) is in the range of 135.8–184.7 °C. The DMA analysis revealed that the UV−hydrogels are with good mechanical properties because the elongation at break is in the range of 117–525% and the tensile strength is in the range of 0.8–2.7 MPa. The UV−hydrogels with BR groups exhibited naked eye visible color variation from yellow to dark blue-green with the variation of the pH values from 2 to 14. The antibacterial efficiency of the UV−hydrogels against S . aureus , E . coli and M . albican increased with the increment of covalent−grafted ChCl amount. Cytotoxicity assay demonstrated that the UV−hydrogels are low toxicity against L929 cells. The experiment of monitoring freshness of beef denoted the UV−hydrogels have potential application in animal–derived high protein food packaging and freshness monitoring.
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APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Xiaoshun Wei,Xuechun Yang,Yun Guo,Yinzhong Liu,Lingchao Wang,Qingjie Wang,Lingli Cheng,Zheng Jiao
In this study, a novel UV-enhanced Mg-doped MOF-ZnO sensor was investigated for its efficient detection of n-butanol gas at lower temperatures. The composite samples were prepared by the co-precipitation method with the appropriate component ratio. The structure, morphology, and optical properties of the as-prepared samples were systematically analyzed through XRD, SEM, TEM, BET, XPS, and UV–vis characterizations. The gas-sensitive performances based on the pristine MOF-ZnO and Mg-doped MOF-ZnO sensor series with the doping levels of 1 %, 3 %, 5 %, and 7 % (wt%) were comprehensively evaluated by adopting the gas-sensitive system. Among them, the 3 % Mg:MOF-ZnO sensor has given prominence to the largest specific surface area and highest oxygen vacancy concentration demonstrating the most excellent gas-sensing performance. Furthermore, with the aid of UV excitation, the 3 % Mg:MOF-ZnO sensor had achieved the enhanced response value of 2049 that was 4.44 times higher than that of pristine MOF-ZnO to 100 of ppm n-butanol at a low temperature of 246 °C, additionally presented out the superior reproducibility with speedy response/recovery time (12/22 s), the theoretical detection limit as low as 200 ppb, as well as the excellent long-term stability and selectivity for n-butanol. This study offers a promising strategy for the well-development of high-performance n-butanol sensors.
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Journal of Environmental Sciences
·
2025
·
IF 6.3
Wenxin Shi,Yuan Zhang,Yanei Xue,Wenjun Sun,Bing Zhang,Le Gao
The essential to improve the coagulation efficiency is to select and optimize the pre-oxidation process. Ultraviolet/sodium percarbonate (UV/SPC) can be employed as an alternative system to UV/H 2 O 2 in drinking water treatment plant operation, benefiting from the solid stability properties with the equivalent effect. At present, the studies on UV/SPC, and other UV/advanced oxidation processes (UV/H 2 O 2 , UV/persulfate, UV/chlorine, etc.), mostly focus on the advanced water treatment after filtration, this study notes that UV/SPC has advantages in the pre-oxidized organics. UV/SPC improving the effect of coagulation on dissolved organic carbon (DOC) elimination by up to 25 %, the optimal UV dose and SPC dosage are 600 mJ/cm 2 and 20 mg/L verified by a pilot experiment; the decomposition degree and conversion of organics which is most conducive to follow-up coagulation treatment is obtained through the detailed comparison of the influence range of UV dose or the C SPC on the molecule structure of organics; the disparate role of UV was unraveled in UV photolysis pre-oxidation and UV/SPC pre-oxidation and coagulation, including the influence regularity of UV transmittance (UVT) and processing flow rate on UV dose; confirm that UV/SPC alleviates the risk of the generation of disinfection by-products (DBPs) to 51.15 %. This study corroborates the potential of UV/SPC as a pre-oxidation technology at the application level.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Na Li,Xinyi Zhou,Yutong Cao,Junrong Yu,Yan Wang,Zuming Hu
Aramid fibers (AFs) with high strength and modulus have a vital application in harsh outdoor bulletproof protection and ship ropes; however, solar radiation, especially ultraviolet (UV) radiation, is one of the main factors for affecting their service life. Herein, different zinc oxide (ZnO) nanostructures were constructed on the surface of AFs by the growth of ZnO nanowires (AF-ZnO NW) and coating of waterborne polyurethane/ZnO nanoparticles composite emulsion (AF/ZnO), respectively. The surface functionalized AFs exhibited enhanced mechanical properties retention after UV radiation. Nevertheless, the tensile strength of AF-ZnO NW before UV aging was already lower than the tensile strength of original AFs due to the surface structure damage from chemical grafting modification. The tensile strength and elongation retention rates of AF/ZnO-5% reached 74.4% and 84.4% after UV exposure for 168 h, respectively, which were much higher than the value of 48.3% and 60.5% of the neat AFs. These results provide an effective and low-cost strategy for improving the UV-resistance of advanced high-performance fibers.
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Water
·
2024
·Vol. 16
·期 11
·1529
·
IF 3
Luhan Su,Zhongwen Liu,Jia He,Yan Wu,Qingguo Wang
The aging behavior of microplastics (MPs) in the environment has garnered significant attention, yet the exact aging process undergone by microplastics during advanced oxidation still remains unclear. This study emphasized elucidating the oxidation and dechlorination mechanisms of polyvinyl chloride microplastics (PVC MPs) within the UV-activated sodium percarbonate system (UV/SPC). After 35 h of UV/SPC (0.05 M) treatment, it exhibited effective dechlorination with a Cl−release of 100.62 ± 13.17 mg/L. And this treatment resulted in the fragmentation and release of fragments from the PVC MPs, thereby contributing to their further aging and dechlorination. In addition, an increase in oxygen-containing functional groups was identified. Quenching experiments confirm that·OHand·CO3−are the primary active species present in the system. In summary, the aging of PVC MPs results in a process of fragmentation, releasing fragments that are more fragile and susceptible to mineralization compared to the original PVC MPs. The release of chloride ions originates from the mineralization of these fragments released from PVC MPs by·OHand·CO3−. This study has provided valuable insights into the aging mechanisms of MPs in practical wastewater treatment.
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JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Hailong Zhang,Qiannan Duan,Lehan Sun,Jianchao Lee,Weidong Wu,Chi Zhou,Hongfang Zhang,Zhongming Guo,Xiaodan Zhang,Xiang Tang,Duo Yun,Liang Yan,Lei Huang,Peng Wang,Baoxin Zhai
In the field of environmental monitoring, traditional spectroscopic techniques, despite their high sensitivity in heavy metal (HM) detection, are plagued by complex equipment and high costs. The emergence of artificial intelligence (AI) has driven the digitalization and intelligence of spectral analysis. However, the complexity of environmental samples and spectral overlap remain a major challenge. This study proposes a multi-component HM detection method that integrates ultraviolet-visible (UV-Vis) superimposed spectra with deep learning to address the issue of spectral overlap. By using combinatorial chemical probes to enhance the specificity of colorimetric reactions and conducting high-throughput experiments to collect spectra, a Transformer model is trained to extract qualitative and quantitative information in an end-to-end manner. During the method development phase, the model was trained using five representative HMs (Sb, Fe, Ni, Cd, Cu) to verify its recognition ability under complex conditions (average R² = 0.936, RMSE = 0.132 mg L −1 , MAE = 0.054 mg L −1 ). The method was then extended to detect ten HMs in real-world samples, demonstrating its scalability and robustness (average R² = 0.681, RMSE = 0.189 mg L −1 ). These results show that the method can simultaneously analyze multiple HMs and transition from spectral fingerprints to quantified ecological risk profiles. Additionally, the AI analysis software developed in this study automates the entire process from spectral input to multi-index detection and risk assessment, providing environmental regulatory authorities with minute-level response capabilities and facilitating proactive early warning for HM pollution control.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2025
·
IF 3.8
Lin Xi,Hu Shiyun,Li Yanxia,Yu Lishuang,Huang Lu
The development of novel enantioseparation materials requires an effective testing method that not only is user-friendly, rapid, and reproducible but also minimizes the amount of enantioseparation material needed. In this work, commercially available silica particles coated with cellulose tris(3,5-dimethylphenylcarbamate) were employed as the chiral stationary phase to develop a simple and rapid method for preparing chiral packed capillary columns compatible with conventional CEC-UV or cLC-UV systems. The column fabrication process took only 2 h. These chiral capillary packed columns, utilizing photonic crystal fibers as frits, successfully separated nine chiral compounds. Among these, six compounds achieved complete resolution within 10 min while demonstrating satisfactory reproducibility and stability. Furthermore, molecular docking simulations were performed using AutoDock and Discovery Studio to investigate the intermolecular interactions between cellulose tris(3,5-dimethylphenylcarbamate) and the nine pairs of enantiomers, providing insights into the enantioseparation mechanism of the chiral stationary phase. This study lays the foundation for the future utilization of the photonic crystal fiber integrated capillary packed column as an advanced platform to explore novel enantioseparation materials. Graphical
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EUROPEAN POLYMER JOURNAL
·
2025
·
IF 6.3
Le Ma,Jun Nie,Xiaoqun Zhu
High-refractive-index (HRI) liquid monomers containing unsaturated acrylate double bonds possess advantages such as photocurability at room temperature and environmental friendliness. However, introducing acrylate groups often reduces the refractive index of monomers. Although small-molecule sulfur-containing structures have high refractive indices, their pungent odors restrict their applications. In this study, a series of sulfur-containing monomers have been successfully prepared through the optimized combination of sulfur elements, benzene rings, and acrylates. These monomers are in a liquid state, and the refractive index performance has reached an advanced level among photocurable monomers. Furthermore, the optical properties (refractive indices, transmittances), curing properties (double-bond conversion and rate of polymerization), and thermal stability (TGA) of the polymer films have been emphatically investigated. The polymer film has a refractive index of 1.648–1.672 at 589 nm, an Abbe number of 22.20–29.32, a transmittance of >90 % at 550–800 nm, a double-bond conversion of 70–92 %, and a maximum weight-loss rate (T max ) temperature of 354–363 ℃, glass transition temperature (T g ) of 45.91 °C–58.45 °C. It exhibits excellent optical properties, curing properties, and thermal stability, opening up new possibilities for the applications of HRI materials.
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