MACROMOLECULAR BIOSCIENCE
·
2023
·Vol. 23
·期 10
·2300099
·
IF 4.6
Qi Yang,Qiang Zhou,Ziyi Guo,Lina Song,Fandong Meng,Zheming Tong,Xiaoli Zhan,Quan Liu,Yongyuan Ren,Qinghua Zhang
During the COVID-19 (Corona Virus Disease 2019) pandemic, traditional medical goggles are not only easy to attach bacteria and viruses in long-term exposure, but easy to fogged up, which increases the risk of infection and affects productivity. Bacterial adhesion and fog can be significantly inhibited through the hydrogel coatings, owing to super hydrophilic properties. On the one hand, hydrogel coatings are easy to absorb water and swell in wet environment, resulting in reduced mechanical properties, even peeling off. On the other hand, the hydrogel coatings don't have intrinsic antibacterial properties, which still poses a potential risk of bacterial transmission. Herein, an anti-swelling and antibacterial hydrogel coating is synthesized by 2-hydroxyethyl methacrylate (HEMA), acrylamide (AM), dimethylaminoethyl acrylate bromoethane (IL-Br), and poly(sodium-p-styrenesulfonate) (PSS). Due to the self-driven entropy reduction effect of polycation and polyanion, an ion cross-linking network is formed, which endows the hydrogel coating with excellent antiswelling performance. Moreover, because of the synergistic effect of highly hydrated surfaces and the active bactericidal effect from quaternary ammonium cations, the hydrogel coating exhibits outstanding antifouling performances. This work develops a facile strategy to fabricate anti-swelling, antifouling, and antifogging hydrogel coatings for the protection of medical goggles, and also for biomedical and marine antifouling fields.
研究领域:
材料科学
·
生物医学工程
·
化学工程
·
医疗器械
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Yun Huang,Junyue Zheng,Peizhuo Wu,Yu Zhang,Lihong Qiu
Cytochrome P450 CYP6B7 has previously been proved to be associated with fenvalerate-resistance in Helicoverpa armigera. Here, how CYP6B7 is regulated and involved in the resistance of H. armigera is studied. Seven base differences (M1–M7) were found in CYP6B7 promoter between a fenvalerate-resistant (HDTJFR) and a susceptible (HDTJ) strain of H. armigera. M1–M7 sites in HDTJFR were mutated into the corresponding base in HDTJ, and pGL3-CYP6B7 reporter genes with different mutation sites were constructed. Fenvalerate-induced activities of reporter genes mutated at M3, M4, and M7 sites were significantly reduced. Transcription factors Ubx and Br, whose binding sites contain M3 and M7, respectively, were overexpressed in HDTJFR. Knockdown of Ubx and Br results in significant expression inhibition of CYP6B7 and other resistance-related P450 genes, and increase of sensitivity of H. armigera to fenvalerate. These results indicate that Ubx and Br regulate the expression of CYP6B7 to mediate the fenvalerate-resistance in H. armigera.
研究领域:
昆虫学
·
分子生物学
·
遗传学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Yuhang Wang,Fang Luan,Xinyu Sun,Liman Zhao,Hong Yan,Yuguang Lv
The residual antibiotic levofloxacin in animal-derived foods and medical wastewater has seriously endangered human health and ecological environment, therefore, it is crucial to develop a multifunctional platform integrating sensitive detection at low concentration and effective degradation with high concentration. Herein, a nanoflower-structured material BiOCl 0.6 Br 0.4 was synthesized via a simple coprecipitation method, which not only possesses large surface area and abundant active sites, but also owns suitable energy band structure, resulting in unique and superior application performance. Moreover, the photocatalytic degradation rate of levofloxacin as high as 86.8%, and the colorimetric detection limit of levofloxacin was as low as 0.68 μM, which realized the construction of difunctional materials for photocatalytic degradation and colorimetric detection. More significantly, the mechanism of BiOCl 0.6 Br 0.4 participating in photocatalytic degradation and colorimetric detection reaction have been revealed, with active species O 2 – and h + identified as the primary contributors. The stability, recyclability and anti-interference of the material indicate promising prospects for broad practical applications.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2017
·
IF 2.686
Meng Li,Xiao Zhang,Yingying Du,Ping Yang
Halide perovskites have attracted enormous attention as a novel optoelectronic material showing bright emission recently. In this paper, we chose CsPbX 3 nanocrystals (NCs) as an example to study the structural, morphological and optical properties . We have synthesized monodispersed colloidal inorganic cesium lead halide perovskites (CsPbX 3 , X = Cl, Br and I, or mixed lead halide CsPb(Cl/Br) 3 and CsPb(Br/I) 3 ) NCs with various morphologies and brightly luminescent properties. The emission wavelength of resulting CsPbX 3 NCs can be tuned from 440 nm to 696 nm by varying the amount of different PbX 2 (X = Cl, Br and I), while maintaining high quantum yields up to 95% and narrow emission spectra . The average lifetime of the NCs is several ns to hundred with changing the composition . The blinking of the NCs in terms of a binary (on/off) process is different from II-VI quantum dots . Interestingly, we find that CsPbBr 3 NCs to Cs 4 PbBr 6 NCs or a mixture of CsPbBr 3 NCs and Cs 4 PbBr 6 NCs were obtained by adjusting the amount of oleic acid (OA)-Cs precursor. The optical properties of these NCs have been controlled by varying their composition. Moreover, the injection speed of Cs-OA precursor enables the control of CsPbI 3 NCs with different morphology, which can be tuned from litter nanoparticles to uniform nanorods . This finding can serve as an ideal platform for the investigation of fundamental properties.
✓ 已验证
DOI
高影响因子
Science China-Materials
·
2021
·Vol. 64
·期 6
·1378-1385
·
IF 8.273
Fu Yuanyuan,Ma Cheng
The interplay between solid electrolytes and electrodes is of vital importance to the performance of all-solid-state Li batteries. Recently, halide superionic conductors have emerged as a new family of high-performance solid electrolytes, but their compatibility with Li metal, i.e., the anode with the highest theoretical capacity, has not been systematically studied. Here, we investigate the interaction between Li metal and two representative halide solid electrolytes: Li 3 YCl 6 and Li 3 YBr 6 . Both materials are found to form interphases with Li, similar to most solid electrolytes. However, the interphases observed here contain electronic conducting components, which are detrimental to their compatibility with Li. By elucidating this phenomenon, the present study provides guiding principles for improving the Li compatibility of halide solid electrolytes.
研究领域:
材料科学
·
电化学
·
固态离子学
·
能源存储
·
电池技术
✓ 已验证
DOI
高影响因子
Current Organocatalysis
·
2026
·Vol. 13
·期 2
·152-162
·
IF 1.1
Guangyu Zhang,Ningkun Xu,Feng Sun,Bing Sun,Xinmei Liu,Wei Xu,Zhe Yang
Introduction The catalytic cycloaddition of CO2 with epoxides to produce cyclic carbonates represents one of the most promising CO2 utilization technologies, offering 100% atomic economy under mild conditions. Nevertheless, the development of cost-effective heterogeneous catalysts with high performance under solvent- and cocatalyst-free conditions remains a grand challenge. Herein, we report the rational design and synthesis of a multifunctional heterogeneous catalyst for efficient CO2/propylene oxide (PO) cycloaddition under solvent- and cocatalyst-free conditions. Methods The ZnMgAl-Br- heterogeneous catalyst was prepared through an integrated coprecipitation-ion exchange method. Structural and physicochemical properties were systematically characterized using SEM, XRD, EDX mapping, BET, and NH3-TPD, which confirmed the coexistence of abundant Br- nucleophiles and –OH hydrogen-bond donors within the layered matrix. Catalytic tests were conducted in a 50 mL stainless steel autoclave. Results A Br- intercalated ZnMgAl layered double hydroxide (ZnMgAl-Br-) catalyst was successfully constructed, integrating nucleophilic Br- anions with hydrogen-bond donating –OH groups in a precisely engineered layered framework. Under optimized conditions (140oC, 7 h, 2.5 MPa), the catalyst achieved 99.2% PO conversion, 98.7% PC selectivity, and 97.9% PC yield. The result represents a remarkable improvement compared with benchmark catalysts (MgAl-Br−: 50.5% yield; ZnMgAl-NO3−: 13.1% yield), highlighting the critical synergy among Br- nucleophiles, Zn species, and –OH groups. Discussion The results demonstrate that the cooperative interaction between Br- and –OH groups is central to the catalytic efficiency of CO2/PO cycloaddition. Incorporation of Zn species expanded the interlayer spacing and optimized the spatial arrangement of Br−/-OH sites, thereby enhancing cooperative catalysis. Conclusion The findings highlight the critical role of Br- nucleophiles and the Zn-modified layered structures in enabling cooperative catalysis. This work establishes a rational strategy for designing multifunctional heterogeneous catalysts for efficient CO2 utilization through epoxide cycloaddition.
✓ 已验证
DOI
高影响因子
Nature Communications
·
2026
·
IF 18.1
Chen Zejun,Geng Mengzi,Li Shizhen,Yang Hangqi,Chen Wanru,Li Ning,Jin Xianbo,Peng Chuang
Diffusion, crossover, and hydrolysis of bromine species in aqueous electrolytes impede the application of Zn||Br batteries with four-electron 2Br + /Br 2 /2Br − conversion. Here, we study a ligand-assisted sparingly solvating electrolyte using ZnSO 4 ·7H 2 O and urea. The high solubility of urea suppresses water activity, while its stronger affinity toward bromine enables preferential coordination over water molecules. This synergistic effect creates a quasi-solvent-free microenvironment that limits bromine solvation and diffusion, resulting in a robust quasi-solid cathode. Moreover, the compact solvation structure favors the formation and stability of Br + species by strengthening nucleophilic urea coordination and inhibiting hydrolysis. Consequently, the fabricated Zn||Br battery exhibits reversible 4e bromine chemistry with a capacity of 417.5 mAh g −1 at 1 A g −1 (based on KBr). A zinc battery coupling the 4e iodine positive electrode and 4e bromine (from the electrolyte) is constructed, yielding a total 8e transfer with a capacity of 897.8 mAh g −1 and a specific energy of 1,344 Wh kg −1 at 2 A g −1 (based on KI).
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED ENGINEERING MATERIALS
·
2026
·
IF 3.6
Liming Li,Xiaoshuai Wang,Ziyang Sun,Wencai Wang
Small-molecule additives such as antioxidants and aromatic oils are widely used in rubber compounds to enhance performance. After prolonged storage or service, they migrate outward, forming a blue iridescent bloom on surfaces. This spoils visual quality, depletes functional additives and degrades the rubber's overall mechanical properties. Therefore, addressing the issue of additive migration and discoloration is imperative to meet the increasing demands for rubber product performance. A study investigated the migration resistance of antioxidant 4020 by partially replacing treated distillate aromatic extract (TDAE) with the migration-resistant high-molecular-weight plasticizer D1050. The effects on the migration rate of antioxidant 4020 were examined, along with the impact on rubber's appearance quality, mechanical properties, migration resistance, and aging resistance. Results indicate that co-using 7 phr D1050 minimizes TDAE dosage while achieving maximum sustained-release effect. The migration rate of antioxidant 4020 decreased by 21.27%, and the aging coefficient K increased by 18.5%. Due to its superior migration resistance, its efficacy persists longer in ozone aging durability tests without causing excessive blooming accumulation. Within the range of compound formulations containing D1050 and TDAE, the mechanical properties of the rubber remained essentially unchanged. D1050 enhanced its resistance to ozone aging.
✓ 已验证
产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2025
·
IF 2.6
Sheng Lv,Liangcheng Song,Yanling Xu,Hongyan Cui,Chongqiang Zhu,Chunhui Yang
The development of high-performance infrared (IR) nonlinear optical (NLO) crystals with ultra-wide bandgaps (>4.0 eV) is crucial for advancing laser technologies, yet achieving a balance between wide bandgaps and strong NLO responses remains challenging. A trivalent aliovalent substitution strategy is reported in this work to engineer diamond-like (DL) halides, CuAlX4 (X = Cl, Br), which simultaneously achieve record-wide bandgaps (4.25 eV for CuAlCl4 and 4.09 eV for CuAlBr4), high laser-induced damage threshold (LIDT) values (46.2 MW cm−2 and 33.9 MW cm−2, respectively), and competitive second-harmonic generation (SHG) coefficients (3.52 pm V−1 and 7.12 pm V−1 at 2.09 μm, respectively). Structural characterization and first-principles calculations reveal that the introduction of Al3+ induces asymmetric [CuX4] tetrahedra and cationic vacancies, breaking inversion symmetry and enhancing hyperpolarizability. The synergistic effects of increased valence electron concentration and optimized tetrahedral alignment result in exceptional optical properties, including broad transparency and type-I phase-matching behavior. This work demonstrates the potential of high-valence substitution for designing DL halides with ultra-wide bandgaps and robust NLO performance, offering new insights for IR optoelectronic applications.
研究领域:
材料科学
·
光学
·
固体物理
·
红外技术
·
晶体工程
✓ 已验证
产品关联
DOI
高影响因子
Water
·
2025
·Vol. 17
·期 17
·2563
·
IF 3
Chao Feng,Tongyu Liu,Yongping Shi,Jimin Shen,Lei Yuan,Yuanqing Guo
The interaction of disinfectants with bromide/iodide ions and natural organic matter (NOM) generates brominated/iodinated disinfection byproducts (Br/I-DBPs), known for their heightened cytotoxicity and genotoxicity relative to chlorinated DBPs. This study investigated Br/I-DBP formation during sodium hypochlorite (NaClO) disinfection of lignin-containing synthetic water by quantifying adsorbable organic halogens (AOX) and trihalomethanes (THMs). Disinfection of bromide-containing water yielded a bromide ion (Br−) to adsorbable organic bromine (AOBr) conversion rate of approximately 60%, with bromine within THMs accounting for about 30% of the total AOBr, indicating significant brominated DBP formation where THMs represent a major fraction. Conversely, iodide ion (I−) conversion to adsorbable organic iodine (AOI) is minimal, suggesting negligible iodinated DBP formation under NaClO disinfection. Examination of key parameters revealed that brominated THM (Br-THM) formation decreased with increasing lignin concentration, while iodinated THM (I-THM) formation increased. The effect of chlorine dose differed: Br-THM formation exhibited an initial increase followed by a decrease at higher doses, whereas I-THM formation consistently decreased. Both Br-THM and I-THM formation increased with higher bromide or iodide ion concentration and with increasing pH. These results highlight the distinct pathways and influencing factors governing brominated versus iodinated DBP formation in lignin-containing waters disinfected with hypochlorite.
研究领域:
环境科学
·
水处理
·
消毒副产物
·
毒理学
·
天然有机物化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Qiong Liu,Chengbo Bai,Die He,Xueting Wu,Yiping Wu,Rong Chen
Surface defects in semiconductors play a significant role in modulating the performance of photocatalytic reactions. However, there is still insufficient exploration regarding the influence of defects on the photocatalytic CO 2 reduction performance. In this study, we achieved controllable construction of oxygen vacancies (OVs) in BiOX (X=Cl, Br) samples through one-step solvothermal treatment in polyols by adjusting the reaction time. The introduction of OVs significantly enhanced the photocatalytic activity of BiOX (X=Cl, Br) for converting CO 2 to CO. Among all the tested BiOX (X=Cl, Br) samples with OVs, BiOCl-OV-2 and BiOBr-OV-2 samples with a moderate amount of OVs exhibited the highest CO yield of 28.51 and 15.22 μmol g cat −1 after 4 hours of irradiation, respectively. Photo-/electrochemical measurements results revealed that engineering OVs into BiOX (X=Cl, Br) effectively adjusted their electronic structure, charge density and separation; however, excessive OVs may slightly degrade their photoelectrochemical properties and thus lead to reduced photocatalytic activity. Furthermore, an appropriate amount of OV was found to enhance both CO 2 adsorption capacity and photo-generated electron reduction ability, thereby further promoting the overall efficiency of photocatalytic CO 2 conversion. Through in situ FTIR spectra analysis, we uncovered the process of photocatalytic conversion from CO 2 to CO.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Zhibin Xu,Zhiheng Xu,Sirui Zhu,Xuebin Zhang,Dandan Yang,Xiaobin Tang
Two-dimensional CsPbX 3 perovskite nanosheets serve as unique platforms for polarized emission modulation. However, the integrated control mechanism of bandgap engineering and polarized optical properties remains largely unexplored. In this study, we demonstrated a halogen gradient strategy using iodine-doped CsPbBr 3-x I x nanosheets with polymer encapsulation, enabling simultaneous band structure modification and optical anisotropy regulation. The iodine gradient enabled continuous tuning of the degree of polarization (up to 0.39) across a broad-spectrum range of 520–677 nm. Notably, radiation-induced polarized emission was observed in perovskite nanostructures under X-ray excitation, revealing directional transport behavior under high-energy stimulation. This work presents a detailed systematic investigation into X-ray-induced linearly polarized luminescence from perovskite nanosheets. The polarization-sensitive response detector exhibited enhanced current ratios, which can be attributed to iodine-induced defect suppression. This work not only advances the field of polarized optoelectronics but also establishes new opportunities for the detection of X-ray polarization response.
研究领域:
纳米材料
·
光电子学
·
钙钛矿光子学
·
X射线探测
·
偏振光发射
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）