JOURNAL OF MEMBRANE SCIENCE
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2026
·
IF 8.8
Zhi-Qiang Pei,Qiaohong Liu,Shi-Xin Wei,Bo-Hao Chen,Quan-Fu An
To overcome the poor organic solvent resistance of conventional polymer membranes, this study developed a robust thin-film composite (TFC) membrane via reverse interfacial polymerization on a polyethylene (PE) substrate. Using o-tolidine (OT) and 1,3,5-benzenetricarbonyl chloride (TMC) as monomers, a high-permeability and highly crosslinked polyamide (PA) selective layer was successfully constructed. The influence of composition of the co-solvent, OT and TMC concentration on membrane morphology, surface chemistry, and separation performance was systematically investigated. The optimized TFC membrane exhibited excellent DMF permeance (4.03 Lm −2 h −1 bar −1 ) and high rejection (99.5%) of methyl blue, attributed to the formation of a compact yet permeable PA layer and electrostatic repulsion effects. Furthermore, the membrane demonstrated excellent long-term stability under harsh solvent conditions and elevated pressure, showcasing superior chemical and mechanical resilience. This work offers a practical and scalable approach for developing advanced solvent-resistant membranes suitable for dye removal in organic media.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.1
Qing Huang,Ruixian Bi,Yalai Cen,Chendong Ling,Wenfeng Zhuge,Jinyun Peng,Cuijie Nong,Cuizhong Zhang,Qiongfang Zhou
This experiment constructed a heterostructure composite material of copper tungstate and molybdenum disulfide (CuWO 4 @MoS 2 ) through an interfacial regulation strategy. The samples were analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Based on CuWO 4 @MoS 2 heterojunction materials, electrochemical sensors were constructed for the detection of o-aminophenol (OAP). Research has indicated that interface regulation CuWO 4 @MoS 2 it can effectively improve electron transfer ability, enhance structural stability, and thus improve electrochemical activity. Under optimal conditions, differential pulse voltammetry (DPV) was used to detect OAP in the concentration range of 0.3–14.8 μM and 14.8–74.1 μM, and the electrochemical response peak current showed two linear segments, namely, Ip (μA) = 7.27 × 10 −2 C (μM) - 1.76 × 10 −2 (R 2 = 0.9983) and Ip (μA) = 2.40 × 10 −2 C (μM) + 0.7 (R 2 = 0.9904). This method achieved a detection limit as low as 0.027 μM. The actual sample of OAP was detected using the spiked recovery method, and the recovery rate was measured to be 98.00% - 100.00%, with favorable results. In summary, the electrochemical sensor constructed in this experiment has easy operation, low cost, anti-interference, and reliable stability and can be used for rapid detection of OAP in river water.
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JOURNAL OF MATERIALS SCIENCE
·
2019
·Vol. 55
·期 5
·1946-1958
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IF 3.442
Mi Xue,Wang Xingrui,Gao Chunjuan,Su Weijun,Zhang Yuying,Tan Xiaoyue,Gao Jianping,Liu Yu
Polystyrene with π -conjugated end groups (BPS) synthesized by reversible addition–fragmentation transfer polymerization was used to modify the surface of reduced graphene oxide (rGO) sheets through π – π stacking (BPS–rGO) in order to increase their hydrophobicity and dispersibility. The modification of rGO makes it possible for BPS–rGO to stabilize Pickering w/o (water-in-oil) emulsions of small droplets, in which toluene is taken as the continuous phase and distilled water as the dispersed phase. The effects of the BPS–rGO concentration and the water/oil ratio on the Pickering emulsions were investigated. The results indicate that increasing hydrophobicity of BPS–rGO was favorable to forming stable w/o emulsions and the emulsion stability was increased with the increase in the BPS–rGO concentration or with the decrease in water/oil ratio. Using BPS–rGO to stabilize Pickering w/o emulsions is an effective and versatile approach to fabricate active materials that can be employed as catalysts for chemical reactions.
研究领域:
材料科学
·
化学工程
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International Journal of Electrochemical Science
·
2023
·Vol. 12
·期 4
·3417-3431
·
IF 1.5
Cheng Chen,Shihui Qiu,Songlv Qin,Guoping Yan,Haichao Zhao,Liping Wang
The free amine-containing poly(o-phenylenediamine) (PoPD) nanoparticles with significant dispersibility in organic solvents have been synthesized by chemical oxidative polymerization of o-phenylenediamine mono-hydrochloride salt. The epoxy coatings with different contents of PoPD nanoparticles (0.5 wt%, 1 wt% and 2 wt%) were then prepared by curing reaction of epoxy resin, amine hardener and amine containing PoPD nanoparticles. The corrosion protection properties of the as prepared coatings on Q235 steel were investigated by potentiodynamic polarization, open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS) technique in 3.5 wt % NaCl aqueous solution for 90 days. The results indicate that the coatings with 0.5 wt% PoPD nanoparticles (0.5-PDEP) exhibits high anticorrosive performance, which is attributed to the improved barrier effect of the nano-fillers and redox catalytic capability of embedded PoPD nanoparticles with the evidence of scanning electron microscope (SEM) and XRD. This novel amine-containing PoPD nanoparticles give a promising way to enhance the anticorrosion performance of epoxy coatings and potentially have a wider range of applications in anticorrosion related engineering applications.
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Journal of Energy Chemistry
·
2020
·
IF 7.216
Ting Chen,Dewu Zeng,Long Zhang,Meng Yang,Dawei Song,Xinlin Yan,Chuang Yu
As a type of candidate for all-solid-state Li batteries, argyrodite solid electrolytes possess high ionic conductivity , but poor compatibility against Li metal. Here, we report novel Li 6 PS 5 I-based argyrodite sulfides with Sn-O dual doping , which is a powerful solution to comprehensively improve the performance of a material. The combination of O and Sn-aliovalent doping not only enables an improved ionic conductivity but more importantly realizes an intensively enhanced interfacial compatibility between argyrodite and Li metal and Li dendrite suppression capability. The assembled battery with Sn-O dual-doped electrolyte and Li anode demonstrates high capacity and decent cycling stability. Dual doping is thus believed to be an effective way to develop high performance sulfide solid electrolytes.
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Science Advances
·
2026
·Vol. 12
·期 27
·
IF 13.9
Huijing Li,Mengyu Liu,Yumeng Chen,Gaochen Jin,Lanlan Wang,Shuting Liu,Lianguang Shang,Jonathan Gershenzon,Ian T. Baldwin,Ran Li
Plants emit volatile compounds that orchestrate complex ecological interactions, with methylated catabolites of interaction-induced phytohormones being common examples. Salicylic acid (SA) mediates plant antipathogen responses, while its methylated derivative, MeSA, broadly mediates plant-insect interactions without specificity. Here, we identified dimethyl salicylate (DMSA), an unappreciated dimethylated SA catabolite, emitted by rice when attacked by the major destructive pest, the brown planthopper. DMSA biosynthesis requires an O -methyltransferase cascade, BSMT1 (benzoic acid/salicylic acid carboxyl methyltransferase 1)–MSOMT (methyl salicylate O -methyltransferase), which is directly activated by a jasmonate (JA)–responsive MYC2-JAMYB transcriptional cascade. Natural variation in the MSOMT promoter confers its herbivory-induced expression in indica but not japonica cultivars. Functionally, DMSA acts as a specific volatile signal attracting the egg-parasitoid wasps of brown planthoppers (BPHs) without mediating direct resistance, which demonstrably suppresses BPH populations in paddy fields. DMSA is an optimized advance in SA signaling derived plant “alarm calls” with great potential in sustainable rice pest management.
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International Journal of Oral Science
·
2026
·Vol. 18
·期 1
·32
·
IF 17.6
Zhang Zhongyin,Shan Zerui,Chen Xinyu,Xia Yu,Meng Li,Zhang Yuxin,Wu Caihong,Yuan Lichan,Ma Junqing
Post-translational modifications (PTMs) have been gradually elucidated in congenital malformations such as cleft palate. Among them, O-GlcNAcylation as a dynamic PTM of proteins regulates various critical biological processes including transcription, translation, and cell fate determination. In this study, a substantial decline in O-linked β-D-N-acetylglucosamine (O-GlcNAc) levels was detected within the palatine plates of all-trans retinoic acid (atRA)-induced cleft palate mice. The role of O-GlcNAc transferase (OGT), the sole enzyme responsible for catalyzing O-GlcNAcylation, was investigated in the process of palatal development. In a zebrafish model, the loss of O-GlcNAc resulted in an elevated prevalence of cleft palate and compromised palatal bone formation. Mechanistically, O-GlcNAcylation of myeloid ecotropic viral integration site 2 (MEIS2), which is mediated by OGT, was found to maintain osteogenic homeostasis by modulating its protein stability through inhibition of ubiquitination. Notably, the serine 237 residue (Ser237) was identified as a critical site for MEIS2 O-GlcNAcylation. Together, the present study uncovers the important function of MEIS2 O-GlcNAcylation in palatal bone development and establishes a novel theoretical framework for understanding the regulatory network of palatal development. This finding may provide novel avenues for the future diagnosis and prevention of cleft palate.
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BIOORGANIC CHEMISTRY
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2026
·
IF 5.1
Yun Bin Han,Li Sha Lin,Nanxi Wang,Ren Xiang Tan
Carthamidin and isocarthamidin as well as their 7-O-glucuronides are abundant tetrahydroxyflavanones in Scutellaria barbata , but their biosynthesis remains poorly defined. Here, we combined metabolite profiling, transcriptome-guided gene discovery, heterologous expression, enzymatic assays, virus-induced gene silencing (VIGS), and transient pathway reconstruction to elucidate their biosynthetic pathway. SbarCHS1 and SbarCHI form the naringenin-producing module. Three CYP82D enzymes then catalyze regioselective A-ring hydroxylation: SbarCYP82D1 and SbarCYP82D8 function as naringenin 6-hydroxylases to generate carthamidin, whereas SbarCYP82D5 acts as an efficient naringenin 8-hydroxylase to produce isocarthamidin. A UGT88-family enzyme, SbarUGAT, catalyzes 7-O-glucuronidation of both hydroxylated flavanones. Non-enzymatic interconversion observed between carthamidin and isocarthamidin and between their corresponding 7-O-glucuronides further suggests that chemical equilibration contributes to this branched biosynthetic pathway. VIGS confirmed the in planta roles of SbarCHS1, SbarCYP82D8, and SbarUGAT, identifying SbarCYP82D8 as the dominant hydroxylation enzyme in leaves. Reconstitution in Nicotiana benthamiana enabled de novo production of both glucuronides, and co-expression of SbarUGDH further enhanced glucuronide accumulation. These findings define the S. barbata biosynthesis of bioactive flavanone glucuronides and provide enzymes for future metabolic engineering of such specialized flavonoids.
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INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Qi-Jia Jiang,Ke Cao
A rhodium-catalyzed universal protocol for selective chalcogenation of B(4)-H of o-carboranes with diaryl diselenides, diaryl disulfides, and diphenyl ditelluride has been developed for the first time. A series of B(4)-Se/S/Te-o-carborane derivatives decorated with various kinds of active groups have been synthesized with excellent yields and regioselectivity. Based on control experiments, a plausible mechanism involving radical and direct oxidative addition process is proposed. This work would be an important reference for the design of new reactions for the chalcogenation of boron clusters.
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高影响因子
CURRENT ORGANIC SYNTHESIS
·
2025
·Vol. 22
·期 6
·754-768
·
IF 2.5
Dat Van Nguyen,Ly Duou Tran,Phuong Uyen Ngoc Vu,Luc Van Meervelt,Mai Ngoc Thi Nguyen,Anh Lan Ngo,Hoan Quoc Duong
Backgroundo-Aminophenol derivatives are of particular interest for their diverse biological activities and potential therapeutic applications. Such as, antioxidant, antibacterial, and cytotoxic activities.ObjectivesThis study aimed to design and synthesize a series of novel o-aminophenol derivatives through an efficient multi-step process, characterize them using modern spectroscopic techniques, and evaluate their antimicrobial, antioxidant, and cytotoxic activities.MethodsA series of novel derivatives of o-aminophenol have been successfully synthesized with very high efficiency through a simple six-step process using readily available chemicals and straightforward reactions. The structures of all products were accurately determined using modern spectroscopic methods such as 1D and 2D NMR, as well as IR, MS spectroscopy, and X-ray methods. The antimicrobial activities of eight o-nitrophenol derivatives were assessed against Gram (-) and Gram (+) bacteria as well as fungi. In comparison, antioxidant activities were tested for two o-nitrophenol and 11 o-aminophenol derivatives using SC50 and EC50 assays. Cytotoxicity was evaluated on KB, HepG2, A549, and MCF7 cancer cell lines.ResultsSix synthesized compounds 5b, 5c, 5g, 6b, 6c, 6g exhibited unusual doublet signals in the H8 region of the 1H NMR spectrum, attributed to atropisomer formation. Eight o-nitrophenol derivatives demonstrated weak antimicrobial activity, with MIC values ranging from 100 to 200 µg/mL. Compound 5g showed activity against all tested bacterial and fungal strains. In antioxidant testing, eight o-aminophenol derivatives 6a, 6b, 6c, 6e, 6f, 6h, 6i, and 12b displayed excellent activity, with SC50 values between 18.95 and 34.26 µg/mL, approaching ascorbic acid's SC50 value of 12.60 µg/mL. Three derivatives 6d, 6g, and 12a showed superior antioxidant activity with EC50 values between 4.00 and 11.25 µg/mL, surpassing quercetin's standard of 9.8 µg/mL. Cytotoxicity assays revealed that o-aminophenol derivatives 6b, 6c, 6f, 6i, and 12b exhibited moderate inhibitory effects on KB cell lines with IC50 values from 32 to 74.94 µg/mL. Compound 6i demonstrated moderate cytotoxic activity against HepG2, A549, and MCF7 cell lines, with IC50 values of 29.46, 71.29, and 80.02 µg/mL, respectively.ConclusionDesign, synthesis, antimicrobial activity, DPPH Radical Scavenging, Cytotoxic activity, Evaluation of H8 signal anomalies in certain compounds, and Single crystal X-ray diffraction analysis.
研究领域:
药物化学
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有机合成
·
药理学
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肿瘤学
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微生物学
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天然产物化学
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分子药理学
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SENSORS AND ACTUATORS B-CHEMICAL
·
2015
·
IF 4.097
Xiao-Hong Cao,Hao-Yan Zhang,Ru-Chao Ma,Qian Yang,Zhi-Bin Zhang,Yun-Hai Liu
A simple and selective colorimetric sensor based on o-phosphorylethanolamine-functionalized gold nanoparticles (OPA–Au NPs) as an optical probe has been developed for the detection of UO 2 2+ . OPA–Au NPs rapidly aggregate in the presence of UO 2 2+ , thereby causing a visual color change from red to blue, which is easily detectable by eye. The proposed sensing system possesses a selective response for UO 2 2+ over other heavy metal ions. The current method shows application potential for UO 2 2+ detection in real water samples.
研究领域:
分析化学
·
环境科学
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CARBOHYDRATE POLYMERS
·
2014
·
IF 3.916
Jingchun Lv,Qingqing Zhou,Guoliang Liu,Dawei Gao,Chunxia Wang
Carboxymethyl chitosan (CMCS) was prepared with a view to develop a multifunctional finish on saponified polyethylene terephthalate (PET) fabric. CMCS was synthesized by chemical reaction with chloroacetic acid, and its chemical structure was characterized by Fourier Transform Infrared Spectrum (FTIR) and nuclear magnetic resonance (NMR). CMCS was grafted on saponified PET fabric using 3-(3-dimethylaminopropyl)-1-ethylcarbodiimide hydrochloride (EDC)/N-hydroxysuccinimide (NHS) and polyethylenimine (PEI)/glutaraldehyde (GA) as cross-linking agent. FTIR, scanning electron microscope (SEM) and energy dispersive X-ray (EDX) analyses confirmed CMCS grafting on saponified PET fabric surface. TGA indicated saponification and CMCS grafting did not affect thermal property of PET fabric. The CMCS grafting greatly improved wettability, antistatic property of saponified PET fabric without harmful effect on their physico-mechanical properties.
研究领域:
材料科学
·
纺织工程
·
高分子化学
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