JOURNAL OF SEPARATION SCIENCE
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2025
·Vol. 48
·期 1
·e70077
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IF 2.8
Marzieh Kavian,Milad Ghani,Jahan Bakhsh Raoof
Herein, an amino-functionalized covalent organic framework was synthesized and accommodated in the pores of porous hollow fiber. In this context, tetra (4-aminophenyl) porphyrin was synthesized for preparing the desired covalent organic framework as the extracting sorbent and employed for hollow fiber solid-phase microextraction of tebuconazole and propiconazole. With respect to the amino groups of the as-synthesized porphyrin-based covalent organic framework, the extracting device has the ability of establishing a hydrogen bond with the selected model analytes. Under the optimum condition, the linear range of the method for both analytes were estimated in the range of 0.5–200 µg L −1 (the coefficient of determination of 0.9962 for tebuconazole and 0.9990 for propiconazole). The limits of detection of the method for tebuconazole and propiconazole were calculated to 0.02 µg g −1 and 0.03 µg g −1 , respectively. The limits of quantification of the method were also estimated for two analytes equal to 0.07 and 0.08 µg g −1 , respectively. The intra- and inter-day relative standard deviations, which fell between 1.8% and 4.7%, were computed to assess the accuracy of the suggested approach. The proposed method was used for the extraction and determination of tebuconazole and propiconazole in tomato, cucumber, apple, cabbage, and carrot, which the obtained results showed the success of the method in extracting and determining of these analytes from the target samples.
研究领域:
分析化学
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环境科学
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Wondimeneh Dubale Adane,Bhagwan Singh Chandravanshi,Merid Tessema
In this study, we have developed a novel, hypersensitive, and ultraselective electrochemical sensor containing thermally annealed gold–silver alloy nanoporous matrices (TA-Au-Ag-ANpM) integrated with f -MWCNTs-CPE and poly( l -serine) nanocomposites for the simultaneous detection of sulfathiazole (SFT) and sulfamethoxazole (SFM) residues in honey, beef, and egg samples. TA-Au-Ag-ANpM/ f -MWCNTs-CPE/poly( l -serine) was characterized using an extensive array of analytical (UV–Vis, FT-IR, XRD , SEM , and EDX), and electrochemical (EIS, CV and SWV) techniques. It exhibited outstanding performance over a wide linear range, from 4.0 pM to 490 μM for SFT and 4.0 pM to 520 μM for SFM, with picomolar detection and quantification limits (0.53 pM and 1.75 pM for SFT, 0.41 pM and 1.35 pM for SFM, respectively). The sensor demonstrated exceptional repeatability, reproducibility, and anti-interference capability, with percentage recovery of 95.6–102.4% in food samples and RSD below 5%. Therefore, the developed sensor is an ideal tool to address the current antibiotic residue crisis in food sources.
研究领域:
食品科学
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分析化学
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DOI
PubMed
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 34
·28084-28092
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IF 4.6
Yangming Jiang,Jiansong An,Yu Xia,Qiang Fei,Daoping Wang,Yang Lu,Wenneng Wu
The aim of this study was to design and synthesize 17 novel 1,2,4-triazole thioether derivatives containing 1,3,4-thiadiazole thioether. Bioactivity assays indicated that several target compounds exhibited moderate to good antifungal and antibacterial activities. Notably, compound 9d demonstrated significantly stronger antifungal activity against Trichoderma sp. in Morchella esculenta (TSM) and Mucor sp. in Dictyophora rubrovalvata (MSD), with EC50 values of 9.25 and 12.95 μg mL−1, respectively, compared to the commercial fungicide pyrimethanil, which had EC50 values of 35.29 and 15.51 μg mL−1. Furthermore, compound 9d found to have strong antibacterial activity against Pseudomonas syringae pv. actinidiae (PSA) in vitro, with an EC50 of 9.34 μg mL−1, markedly superior to that of thiodiazole copper (81.74 μg mL−1). Additionally, the in vivo anti-PSA assessment revealed therapeutic and protective activities at 200 μg mL−1 of 59.39% and 79.33%, respectively, outperforming thiodiazole copper (38.91% and 67.64%, respectively). According to molecular docking simulations the interaction between compound 9d and FtsZ was mainly due to hydrogen bond formations with GLU-296, ARG-301, LYS-188, ASP-29 and GLY-30. This report suggests that these novel 1,2,4-triazole thioether derivatives featuring a 1,3,4-thiadiazole skeleton may effectively mitigate fungal and bacterial threats to plants.
研究领域:
药物化学
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微生物学
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植物病理学
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生物有机化学
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分子生物学
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DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
·
2020
·
IF 3.004
Kamran Bashir,Guoning Chen,Jili Han,Hua Shu,Xia Cui,Lu Wang,Wen Li,Qiang Fu
Fluconazole and voriconazole are the two broad-spectrum triazole antifungals. The present work described the fabrication method for the synthesis of the amino-modified magnetic metal–organic framework. This material was applied as a pre-sample treatment sorbent for the selective extraction of fluconazole and voriconazole in rat plasma samples. The material was fabricated by the chemical bonding approach method and was characterized by different parameters. The factors which affect the extraction efficiency of the sorbent material were also optimized in this study. Due to the optimization of solid-phase extraction conditions, the nonspecific interaction was reduced and the extraction recoveries of target drugs were increased in plasma samples. The extraction method was combined with the HPLC-UV method for the analysis. Excellent linearity (0.1–25 µg/mL), detections (0.02, 0.03 µg/mL) and quantification limits (0.04, 0.05 µg/mL) were resulted for fluconazole and voriconazole respectively. The maximum recoveries from spiked plasma samples of fluconazole and voriconazole were 86.8% and 78.6% and relative standard deviation were 0.9–2.8% and 2.2–3.6% respectively. Moreover, this sorbent material was used multiple times which was an improvement over single-use commercial sorbent materials. This validated method has practical potential for the simultaneous determination of these drugs in therapeutic drug monitoring studies as well as for routine pharmacokinetic evaluations.
研究领域:
药物分析
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材料科学
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DOI
PubMed
高影响因子
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
·
2019
·Vol. 103
·期 5
·683-688
·
IF 1.65
Lu Tao,Zhou Zhigao,Zhang Qi,Zhang Zhenyan,Qian Haifeng
Extensive use of the fungicides azoxystrobin (AZ) and pyraclostrobin (PYR) can have negative effects on aquatic environments, but comprehensive studies on their effect on aquatic microbial communities are still lacking. We found that AZ and PYR could both inhibit the growth of Chlorella vulgaris , but PYR also inhibited Microcystis aeruginosa more strongly than did AZ. High-throughput sequencing analysis showed that AZ promoted the growth of Cyanobacteria in microcosms, and both PYR and AZ disturbed the ecological balance in the aquatic bacterial community and created distinct ecological risks. Our study suggests that the ecological risk of fungicides is complex, and fungicide use should be better managed to reduce potential risks to the environment.
研究领域:
环境科学
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微生物学
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Xue Tian,Shuang Wang,Jinsheng Li,Fengxiang Liu,Xu Wang,Hao Chen,Di Wang,Hongzhe Ni,Zhe Wang
Benzimidazole grafted polybenzimidazole cross-linked membranes (CPBIm-X) with outstanding phosphoric acid (PA) stability are successfully prepared. 2-chloromethyl benzimidazole (CMBelm) is grafted onto PBI mainchains and using 3-glycidoxypropyltrimethoxysilane (KH560) as a cross-linker. The benzimidazole sidechains can not only increase the basic sites but also allow the membrane to achieve higher phosphoric acid uptakes without sacrificing mechanical strength. Moreover, compared with the imidazole rings in the PBI backbone, the side chain with imidazole rings are flexible, which benefit the proton transportation and lower the activation energy. In addition, the mechanical strength of cross-linked membranes is excellent. For example, the tensile strength value of CPBIm-5 is 101.4 MPa, while that of the PBIm is 79.0 MPa. The proton conductivity is enhanced because the hydrolysis of KH560 resulting Si O Si networks structure, which can absorb more phosphoric acid. The Si O Si networks in the matrix can efficiently improve the stability of phosphoric acid (PA), the remaining weight of CPBIm-5 is 57% PA. Taking into account performance comprehensively, the weight of 5% KH560 is the optimum content. For example, the proton conductivity of CPBIm-5 is 0.092 S cm −1 at 180 °C. Compared to the pristine PBI, it is almost three-fold in proton conductivity.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Shuang Chen,Lingqian Kong,Chaolei Ban,Jinsheng Zhao,Hongmei Du
Four copolymers, poly(fluorene-pyrido[3,4-b]pyrazine) (PFPP), poly(benzotriazole-fluorene-pyrido[3,4-b]pyrazine) (PBTFPP), poly(benzotriazole-fluorene-benzothiadiazole) (PBTFBD), poly(benzothiadiazole-fluorene-benzothiadiazole) (PBDFBD)were synthesized successfully. Afterwards, a series of characterization, including cyclic voltammetry (CV), spectroelectrochemistry, kinetics, colorimetry and thermal gravimetric analysis were carried out to fully investigate the properties of the copolymers we got. Their band gaps are 1.87 eV, 1.91 eV, 1.97 eV and 1.98 eV, respectively. From neutral state to oxidized state, PFPP changes from thistle to transparent gray, PBTFPP changes from tan to transparent gray, PBTFBD changes from sienna to lightslategray, and PBDFBD changes from rosybrown to lightgrey. The coloration efficiencies are 269.91cm 2 ·C -1 for PFPP, 177.45cm 2 ·C -1 for PBTFPP, 241.92cm 2 ·C -1 for PBTFBD, and 174.67cm 2 ·C -1 for PBDFBD in near infrared region. Except for PFPP, all the other three copolymers are stable and could be good candidates in electrochromic application.
研究领域:
材料科学
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化学
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DOI
高影响因子
AICHE JOURNAL
·
2017
·Vol. 64
·期 6
·2160-2167
·
IF 2.836
Cui-Ping Ye,Xiao-Xiao Ding,Wen-Ying Li,Hai Mu,Wei Wang,Jie Feng
To screen suitable solvents for anthracene crystallization, the solubilities of anthracene and metastable zone width were determined in four different solvents, N,N-dimethyl formamide (DMF), xylene, tetrachloroethylene, and diethylene glycol dimethyl ether from 30 to 80 °C at atmospheric pressure using a self-made crystallizer. The cooling modes, solvents, and the effects of carbazole on the solvent crystallization process of anthracene were also investigated. The composition of mother liquors and solid products were measured by gas chromatography; the solids were analyzed by scanning electron microscope, X-ray diffractometer, differential scanning calorimetry, granulometer, and fluorescence spectrometer. The results showed that a uniform anthracene crystal was obtained when using DMF under the forced circulation cooling mode. Solid solution of anthracene and carbazole was initially detected in solvent crystallization. The existence of carbazole in solution has an obvious effect on the crystal morphology of anthracene, to some extent, is beneficial to the crystal growth of anthracene. © 2018 American Institute of Chemical Engineers AIChE J , 64: 2160–2167, 2018
研究领域:
化学工程
·
材料科学
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DOI
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Zhen-Yu Chen,Qin-Long Hong,Hai-Xia Zhang,Jian Zhang
By enhancing steric hindrance of substituents on the imidazole ring, the fan-shaped molecule of a tridentate boron imidazolate ligand (KBH(2-ipim)3, 2-ipim = 2-isopropylimidazolate) with racemic chirality was obtained. Then, seven novel boron imidazolate frameworks (BIFs) were prepared by mixing KBH(2-ipim)3 ligands with various derivatives of benzene carboxylic acid under solvothermal conditions. All of these seven materials contain a ladder-like zinc-boron-imidazolate chain as a basic building block, and the ligand BH(2-ipim)3– exists in the same handedness in one chain. The structural variations are associated with the position of substituents of the auxiliary ligand. Of particular interest is the spontaneous resolution of BH(2-ipim)3– ligands into two independent enantiomorphous homochiral structures, BIF-131-S and BIF-131-R, which contain both a chiral chain and an absolute helix embedded in the nets.
研究领域:
化学
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材料科学
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DOI
高影响因子
Journal of Hazardous Materials Advances
·
2023
·
IF 0
Yonghao Zhang,Wen Li,Lulu Huang,Zhaoyi Zhang,Liu Liu,Jie Zhang,Qian Li,Jing Yang,Kajia Wei
In this work, a novel Ti/TiO 2 -NTA/meso-flower PbO 2 electrode (TMF-PbO 2 ) was developed by anodic oxidation and modified oxygen bubble-template electrodeposition. Characterization of the electrode confirmed that the meso-flower layer exhibited a unique 3D and hierarchical structure with a rough morphology. N 2 adsorption-desorption isotherms and cyclic voltammetry suggested that TMF-PbO 2 possessed a 2.18 times larger specific surface area and at least a 1.46 times larger electroactive area than the electrode with a porous PbO 2 layer. The investigation of the effect of the operation parameters indicated that the optimal conditions were a pH value of 3, supporting electrolyte concentration of 10.0 g L −1 and current density of 25 mA cm −2 . The electrochemical degradation of 1H-1,2,4-triazole (Tz) by TMF-PbO 2 was studied by HPLC and LC‒MS with the assistance of quantum chemical calculations. The TMF-PbO 2 achieved 100% removal of Tz and 70.4% removal of COD on the advanced treatment of actual pesticide tailwater with an energy consumption of 29.40 kWh kg −1 COD. The EC 50, 48 h value and BOD 5 /COD ratio of the treated wastewater were 70.6±5.9% and 0.64, respectively, indicating significantly low toxicity and high biodegradability. Cyclic testing also suggested that TMF-PbO 2 was stable during application. The excellent performance of TMF-PbO 2 in this study indicated that this kind of electrode is highly applicable for the treatment of pesticide tailwater.
研究领域:
环境科学
·
电化学工程
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DOI
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Zhiyu Jin,Bin Song,Xiang Chen,Lei Shi,Feng Feng Zhao,Pengxiang Gao,chong zhang,Bingcheng Hu
The change in chemical or physical properties of materials composed of repeated methylene units with odd or even numbers of linkages is a well-documented phenomenon in organic chemistry and materials science. So far, such behavior has not been reported for the important class of cyclo-pentazolate anion (cyclo-N5−) salts. In this study, we successfully synthesized and characterized four novel cyclo-N5ˉ salts, which the alkyl chains in the tetrazole cations contain varying odd and even carbon numbers. X-ray single-crystal diffraction analysis reveals distinct structural arrangements dependent on the carbon atom parity in the tetrazolium cation's alkyl chain. When the alkyl chain contains an odd number of carbon atoms, the tetrazolium cation, cyclo-N5−, and hydrogen bonds adopt a helical configuration, resulting in a highly ordered crystalline structure. Conversely, alkyl chains with an even number of carbon atoms lead to planar arrangements of these components, manifesting in relatively disordered crystal structures. Our findings disclose the importance effect of minor changes in the molecular conformation of organic cations on the crystal structure, sensitivity and energetic properties of cyclo-N5− salts, demonstrating the control of key properties of cyclo-N5− salts by alkyl chain engineering of the cations.
研究领域:
有机化学
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材料科学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Jie Cheng,Yaran Lv,Fan Zhang,Peng Han,Qinhua Miao,Zhenxiang Huang
Cobalt is emerging as the next-generation interconnect material to replace copper for integrated circuit sub-10 nm technology nodes. Due to its susceptibility to corrosion, identifying effective corrosion inhibitors for Co during the chemical mechanical polishing (CMP) is crucial. In this study, theoretical computations and experimental approaches were employed to investigate the corrosion inhibition effects of benzotriazole (BTA) and its derivatives—methylbenzotriazole (TTA) and 5-carboxybenzotriazole—on Co surfaces. Quantum chemical calculations and molecular dynamics simulations were used to reveal the corrosion mechanism at the atomic level. The computational findings were further validated by electrochemical experiments. Among the inhibitors studied, TTA exhibited the highest adsorption affinity for the Co surface, achieving an inhibition efficiency of up to 91.71 %. This is attributed to the formation of a dense protective layer on the Co surface through both physical adsorption via intermolecular forces and chemical adsorption via charge transfer. CMP experiments demonstrated that all three inhibitors significantly reduce the material removal rate (MRR) of Co. Notably, when the TTA concentration reaches 9 mM, the MRR is reduced to 132.64 nm/min, meeting the requirements for Co bulk polishing. These findings suggest that TTA is a highly promising Co corrosion inhibitor for slurry development in CMP processes.
研究领域:
材料科学
·
电化学
·
表面科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）