JOURNAL OF ORGANIC CHEMISTRY
·
2024
·
IF 3.3
Nan Wang,Yuanyuan Huang,You Zi,Mengke Wang,Weichun Huang
A practical and regioselective direct N-alkylation of 2-pyridones is enabled by use of α-keto esters in the P(NMe2)3-mediated deoxygenation process. The reaction proceeds under mild conditions to produce N-alkylated 2-pyridones with high selectivity and generality, and the protocol is shown to be applicable for the scale-up synthesis, which makes it promising for practical applications.
研究领域:
有机化学
·
合成化学
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DOI
PubMed
高影响因子
DYES AND PIGMENTS
·
2021
·
IF 4.889
Pengyue Sun,Diya Yang,Jing Li,Yaodong Zhang
In this work, 4-formyl-3-hydroxybenzoic acid (FHBA), which does not contain a large conjugated ring structure, exhibited aggregation-induced emission (AIE) in aqueous solvents. On this basis, FHBA and a metal-organic framework material (i.e., ZIF-8) form into a complex (FHBA@ZIF-8), which presents the AIE characteristics of FHBA. Then, lanthanide metal (i.e., Eu 3+ ) coordinates with guanosine 5′-monophosphate disodium (GMP) salt to synthesize a coordination polymer (LnCP), which combines with FHBA@ZIF-8 do afford a novel double-emitting fluorescence probe (FHBA@ZIF-8@Eu-GMP, FZE) for tetracycline antibiotics (TCAs). TCAs coordinate with Eu 3+ and act as antenna ligand. Thus, an “antenna effect” comes into being and effectively enhances the emission intensity of Eu 3+ at 616 nm. Moreover, the UV–vis spectra of TCAs largely overlap with the excitation spectrum of FHBA, resulting in an inner filter effect (IFE) and quenching of blue-green fluorescence from FHBA molecules at 473 nm. The ratio of fluorescence signal (F 616 /F 473 ) showed a good linear relationship with the concentration of tetracycline hydrochloride (TC) in the range of 0.1–200.0 μM, and the detection limit was 60 nM (S/N = 3). This fluorescence probe can also effectively respond to oxytetracycline hydrochloride (OTC) and chlortetracycline hydrochloride (CTC). The probe was applied to determine TC in milk, and the recoveries ranged from 94.0% to 101.4%, indicating the application potential of this method. This study provides a novel idea for the construction of ratiometric fluorescence sensing platforms and shows the application potential of the AIE effect of FHBA.
研究领域:
分析化学
·
环境科学
·
生物医学
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DOI
高影响因子
Nanoscale Research Letters
·
2020
·Vol. 15
·期 1
·1-8
·
IF 3.578
Lv Fengzhen,Ling Kang,Zhong Tingting,Liu Fuchi,Liang Xiaoguang,Zhu Changming,Liu Jun,Kong Wenjie
High-quality CH 3 NH 3 PbI 3− x Cl x (MAPIC) films were prepared using potassium chloride (KCl) as an additive on indium tin oxide (ITO)-coated glass substrates using a simple one-step and low-temperature solution reaction. The Au/KCl-MAPIC/ITO/glass devices exhibited obvious multilevel resistive switching behavior, moderate endurance, and good retention performance. Electrical conduction analysis indicated that the resistive switching behavior of the KCl-doped MAPIC films was primarily attributed to the trap-controlled space-charge-limited current conduction that was caused by the iodine vacancies in the films. Moreover, the modulations of the barrier in the Au/KCl-MAPIC interface under bias voltages were thought to be responsible for the resistive switching in the carrier injection trapping/detrapping process.
研究领域:
材料科学
·
电子工程
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DOI
PubMed
高影响因子
CURRENT MICROBIOLOGY
·
2022
·Vol. 79
·期 12
·1-10
·
IF 2.343
Lu Min,Liu Bingxin,Xiong Wenbin,Liu Xinchun
The novel phage ST-3, capable of infecting the foodborne pathogen Salmonella Typhimurium, was isolated from wastewater. The Biological characters and genome information of ST-3 were analyzed. In the in vitro assay, the phage ST-3 with a MOI of 10 effectively inhibited the growth of Salmonella Typhimurium CGMCC 1.1174 in 6 h. The inhibitory effect of combination phage ST-3 and antibiotics was also studied, the removal rate of planktonic host exposed to ST-3 and levofloxacin hydrochloride at the same time, or to ciprofloxacin followed by ST-3, is higher than that exposed to antibiotic dosing group alone and antibiotic + phage dosing group. The phage ST-3 combined with 0.5 µg/mL levofloxacin hydrochloride resulted in the largest decrease in biofilm biomass at 54%. The phage ST-3 could be a potential agent to control Salmonella Typhimurium growth and provide instruction for use it and antibiotics together.
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产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2017
·Vol. 35
·期 6
·713-720
·
IF 1.692
Liu Yu-man,Li Qiang,Liu Huan-huan,Cheng Hui-hui,Yu Jian,Guo Zhao-xia
Antibacterial thermoplastic polyurethane (TPU) electrospun fiber mats were prepared by adsorption of Ag nanoparticles (Ag NPs) onto TPU/3-aminopropyltriethoxysilane (APS) co-electrospun fiber mats from silver sol. The use of APS can functionalize TPU fibers with amino groups, facilitating the adsorption of Ag NPs. The effects of pH of silver sol and APS content on Ag NP adsorption and antibacterial activity were investigated. Ag NP adsorption was evidenced by TEM, XPS and TGA. Significant Ag NP adsorption occurred at pH = 3−5. The main driving force for Ag NP adsorption is electrostatic interaction between ―NH 3
+ of the fibers and ―COO − derived from the ―COOH group capped on the surfaces of Ag NPs. The antibacterial activity of the Ag NP-decorated TPU/APS fiber mats was investigated using both gram-negative Escherichia coli and gram-positive Bacillus subtilis . The antibacterial rate increases with increasing APS content up to 5% where the antibacterial rates against both types of bacteria are over 99.9%.
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DOI
高影响因子
ENERGY & FUELS
·
2024
·
IF 5.2
Yinhui Feng,Zhaoguo Liu,Rixin Liu,Shuqi Kang,Shuyuan Zhang,Xin Guo,Shiyong Chu,Shaohua Guo
Layered transition-metal oxides are recognized for their substantial potential as cathode materials for sodium-ion batteries (SIBs), particularly in the context of large-scale energy storage systems. O′3-NaMnO2 (NMO) has received considerable attention due to its cost-effectiveness, high capacity, and adequate initial sodium content. However, its practical application is hindered by issues, such as Jahn–Teller distortion and the migration of Mn during cycling, which result in severe irreversible phase transitions and structural collapse. In this study, the entropy strategy was employed to synthesize O′3-NaMn0.8Mg0.06Ti0.06Fe0.04Al0.04O2 (NMO-MTFA), which not only stabilized the crystal structure but also enhanced both the bulk and surface/interface kinetics. NMO-MTFA delivers a high initial discharge capacity of 190 mA h g–1 and demonstrates a superior cycling performance and rate capability. The stabilization of the crystal structure is further reinforced by the strengthened Mn–O interaction, achieved through the trace doping of multiple elements. This research underscores the efficacy of the entropy strategy in optimizing the performance of layered oxide cathodes, thereby presenting a novel approach for the design of high-performance SIBs.
研究领域:
材料科学
·
电化学
·
能量存储
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Beibei Ma,Yawen Liang,Xiaokai Ma,Wenjie Wang,Chengcheng Miao,Guanqi Yu,Qizhao Wang,Chunyang Xu,Xinwei Cui
The rising demand for cost-effective and safe energy storage systems has ignited strong global interest in advanced cathodes that surpass lithium-ion batteries in practical applications. Herein, we propose a composite material in which five ions, Ti 4+ , Mn 2+ , Fe 2+ , Zr 4+ , and Mo 6+ , are doped into the lattice of Na 3 V 2 (PO 4 ) 3 and a uniform carbon-coating layer is applied to its surface, resulting in the formation of high-entropy doped Na 3 V 2 (PO 4 ) 3 @C materials (HENVP@C). When employed as the cathode material for Sodium-ion batteries (SIBs) and hybrid lithium/sodium-ion batteries (HLSIBs), HENVP@C shows remarkable Li + /Na + storage capabilities. The results of electrochemical performance tests on half-cells reveal that HENVP@C exhibits a high capacity, along with excellent cycle life and stability. High-entropy doping effectively stabilizes the NASICON structure of HENVP@C, enhances ionic conductivity, and optimizes ion diffusion kinetics, particularly improving its dual-ion pseudocapacitive storage capability. In addition, the surface carbon coating improves the electronic conductivity of the material. The insights presented in this work provide new ideas for designing cathode materials for SIBs and HLSIBs.
研究领域:
材料科学
·
能源存储技术
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DOI
PubMed
高影响因子
npj Science of Food
·
2025
·Vol. 9
·期 1
·1-9
·
IF 7.8
Ye Xiang,Chen Wen,Yan Fujie,Zheng Xiaodong,Tu Pengcheng
In late-stage type 2 diabetes mellitus (T2DM), impaired islet β cell function leads to absolute insulin deficiency, thereby disrupting blood glucose homeostasis. GLP-1, an incretin hormone, stimulates insulin secretion from islet β cells post-meals. This study investigated the effects of anthocyanin cyanidin-3-O-glucoside (C3G) on GLP-1 secretion using STC-1 (intestinal endocrine L cells) and NIT-1 (islet β cells). In a co-culture system, C3G treatment increased GLP-1 secretion in STC-1 cells, promoting insulin release in NIT-1 cells under high glucose. Mechanistically, C3G activated the PPARβ/δ-β-catenin-TCF-4 pathway in STC-1 cells, enhancing PG precursor transcription and GLP-1 synthesis.Inhibiting PPARβ/δ with GSK0660 blocked this C3G-induced upregulation. Overall, C3G stimulates GLP-1 secretion from intestinal L cells via this pathway, indirectly boosting insulin release from β cells. These findings enhance T2DM mechanism understanding and suggest the potential of C3G in GLP-1-based T2DM therapy.
研究领域:
分子生物学
·
代谢疾病研究
·
药理学
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DOI
PubMed
高影响因子
Food Production Processing and Nutrition
·
2025
·Vol. 7
·期 1
·1-14
·
IF 5.7
Sun Teng,Wang Zhaojun,Dai Yiqiang,Zhai Kang,Fang Xiangna,Chen Yitian,Zhao Baomin,Dong Mingsheng
In this study, Rhizopus oligosporus RT-3 was utilized to ferment soybean meal to obtain a tempe-like food with low fat and high bioactivity. To investigate the impact of fermentation on soybean meal’s nutritional value, we detected the protein-related indices and conducted a non-targeted metabonomic analysis on both fermented soybean meal (FSM) and soybean meal (SM) in order to explore changes in a certain type of metabolite and its corresponding metabolic pathways. The results showed a significant increase in crude protein, peptides and amino acids while getting porous after fermentation. A reduction of raffinose and stachyose to 18.1% and 8.5%, respectively, due to the action of α-galactosidase and β-furanofructosidase occurred. As to amino acid metabolites, essential amino acids for human bodily functions such as lysine, histidine, and threonine were significantly upregulated. Furthermore, nine peptide metabolites were identified as angiotensin-converting enzyme (ACE) inhibitors and dipeptidyl peptidase-4 inhibitors (DPP-IV). After feeding with different doses of FSM, levels of insulin-like growth factor-1 (IGF-1), hemoglobin (HB), albumin (ALB), and total protein (TP) of malnourished mice all returned to normal. In conclusion, fermentation with Rhizopus oligosporus RT-3 can improve the quality of SM by reducing the level of oligosaccharide anti-nutrition factors and increasing the contents of free amino acid and small bioactive peptides, which provide a theoretical basis and new ideas for the application of FSM. Graphical
研究领域:
食品科学
·
代谢组学
·
营养学
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DOI
高影响因子
BIOCHEMICAL PHARMACOLOGY
·
2024
·
IF 5.3
Tingyu Qin,Yingnan Lv,Xiangying Xi,Zhipeng Wu
Diabetic retinopathy (DR) is a microvascular complication of diabetes mellitus, and its main clinical manifestation is retinal vascular dysfunction. DR causes blindness and is a problem with significant global health implications. However, treating DR is still challenging. In this study, we aimed to explore the role of polo-like kinase-3 (PLK-3) and the potential regulatory mechanism in DR. Sprague-Dawley rats were injected intraperitoneally with streptozotocin (STZ, 60 mg/kg) to induce a rat model of DR, and rat retinal microvascular endothelial cells (RRMECs) were treated with high glucose (HG, 25 mmol/L glucose) to develop a cell model of DR. We found that PLK-3 was significantly downregulated in the retinal tissues of STZ-induced diabetic rats and HG-induced RRMECs. Lentivirus-mediated PLK-3 overexpression alleviated the histological damages in DR rats. After HG stimulation, cell proliferation, migration, and angiogenesis in RRMECs were inhibited after PLK-3 upregulation. By using label-free proteomics, we identified 82 differentially expressed proteins downstream of PLK-3, including BRCA1-associated protein 1 (BAP1), which was significantly upregulated in PLK-3-overexpressed RRMECs compared to control cells under the HG condition. In vivo and in vitro assays indicated that the forced expression of PLK-3 increased the phosphorylation of BAP1 at serine 592 and caspase-8 expression. Detailed evidence showed that BAP1-shRNA-mediated knockdown restored the cell function in HG-treated RRMECs when PLK-3 was overexpressed. Collectively, this study shows that PLK-3 alleviates retinal vascular dysfunction in DR by inhibiting the phosphorylation of BAP1. Thus, PLK-3 may develop as a promising target for the therapy of DR.
研究领域:
糖尿病
·
眼科
·
分子生物学
·
细胞生物学
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2024
·
IF 10.7
Jiarong Li,Shude Liu,Yuanzhao Xie,Fengluan Jiang,Xinyu Huang,Jianfeng Xia,Limin Wu,Yonghui Deng
Core–shell magnetic polymer microspheres with porous organic shells are highly desired for adsorption, separation, delivery/immobilization of guest objects in catalysis, and drug release. Herein, an amphiphilic block copolymer-directed interfacial assembly and polymerization strategy was reported to synthesize magnetic mesoporous 3-aminophenol–formaldehyde resin (MMAPF) microspheres. The uniform MMAPF microspheres exhibit well-defined core–shell structures, controllable porous shell thickness, high magnetization, and superparamagnetic properties. The abundant hydroxyl and amino groups in the porous shell offer the exceptional capability for stable immobilization of ultrafine Au nanoparticles, which can serve as a magnetically recoverable heterogeneous catalyst for catalyzing the hydrogenation of 4-nitrophenol with a fast reaction rate constant (0.59 min−1) and conversion rate (99%) at room temperature and good recycling stability.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING & TECHNOLOGY
·
2025
·
IF 1.6
Jiadi Zhou,Weilong Zhang,Shangkun Bai,Yinghui Shao,Yuanyuan Tang,Mengqian Jing,Zhiqun Yu
3-Amino-1-adamantanol (3AA) is an important intermediate of vildagliptin. In this work, a fully continuous flow synthesis of 3-amino-1-adamantanol has been proposed. Selecting amantadine sulfate (AS) as the starting material, the effects of process parameters were systematically investigated, such as the molar ratio of reactants, the amount of sulfuric acid and reaction temperature. The kinetics of nitration reaction were carried out in both batch and continuous flow processes to explain the relationship between the amount of sulfuric acid and the reaction rate constant. Based on the apparent reaction rate constants and thermodynamic parameters, a fully continuous flow synthesis of 3AA combining nitration, hydrolysis and neutralization reaction has been realized. Compared with the batch method, the reaction time was shortened from 8 h to 36 min, the side reactions were significantly inhibited, and the yield increased from 87.8 % to 95.2 % by continuous flow strategy.
研究领域:
有机化学
·
制药工程
·
化学工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）