APPLIED ORGANOMETALLIC CHEMISTRY
·
2025
·Vol. 39
·期 6
·e70213
·
IF 0
Zhi-Zhou Chen,Shuo Wang,Wen-Jie Jiang,Zhi-Hao Cai,Chen-Hao Zhang,Ming-Yu Huang,Guang-Zao Huang,Dan Zhao
Uranium can cause irreversible reactions in the body if accidentally ingested by organisms, and when antibiotics exceed normal acceptable levels, they can cause serious illness, so detecting them is important but also challenging. In this work, new azo-imidazole ligands were formed by introducing different functional groups (biphenol, phenol) into the benzimidazole moiety (E)-4-((1H-benzo[d]imidazol-5-yl)diazenyl)-[1,1′-biphenyl]-2,2′-diol [L1]、(E)-3-((1H-benzo[d]imidazol-5-yl)diazenyl)phenol [L2]. Subsequently, under different high temperature, a series of water-stabilized Zn-based metal–organic frameworks (MOFs) [Zn(L1)(BDC)]·CH 3 OH·H 2 O ( MOF-1 ), [Zn 2 (L2) 4 (BDC) 2 ]·L2 ( MOF-2 ) and [Zn(L2)(1,3-BDC)]·H 2 O ( MOF-3 ) were obtained by using H 2 BDC and 1,3-H 2 BDC as auxiliary ligands. X-ray revealed that they were different 3D supramolecular framework. Outstanding fluorescent properties and structural stability of MOFs 1-3 making them potential luminescent sensors for UO 2 2+ ions and antibiotics in water. The results show that MOF-1 , MOF-2 , and MOF-3 exhibit high sensitivity for the detection of UO 2 2+ ions with detection limits of 3.00 × 10 −6 mol/L for MOF-1 , 2.58 × 10 −6 mol/L for MOF-2 , and 3.01 × 10 −6 mol/L for MOF-3 . Similarly, the strong emissions of MOF-1 , MOF-2 , and MOF-3 can be quenched efficiently by trace amount of NMs (metronidazole, MDZ; dimetridazole, DTZ) and NFs antibiotics (nitrofurazone, NZF; nitrofurantoin, NFT; furazolidone, FZD).
研究领域:
材料科学
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环境科学
·
化学
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DOI
SEPARATION AND PURIFICATION TECHNOLOGY
·
2018
·
IF 3.927
Xuehua Ruan,Xinfang Zhang,Ziyuan Zhou,Xiaobin Jiang,Yan Dai,Xiaoming Yan,Gaohong He
Continuous ZIF-8 membranes have showed great potential for gas separation. The prospect is subjected to two pivotal issues: shorten the time to construct the ZIF-8 selective layer and tightly bond ZIF-8 layer onto the substrate. In our previous work, Zn(II)-doped polydopamine (Zn-PDA) linkage layer was proposed and effectual to solve these problems. In this research, the mechanism likely to support the improvements is studied intensively. The dominant factor is that Zn(II) ions can be chelating and depositing sufficiently in the linkage layer. The strongly alkaline condition for dopamine polymerization is also beneficial to Zn(II) chelation and deposition, which has been confirmed by DFT simulation, together with characterization tests, e.g., XPS, FTIR, and Zn(OH) 2 precipitation for Zn(II)–O coordination. Phenolic hydroxyl groups are deprotonated in the strongly alkaline environment with high Mulliken charge (−0.515 & −0.524 e) and become strong chelation sites to Zn(II). Subsequently, Zn(II) clusters extensively filled in the PDA linkage layer are acting as the starting sites for ZIF-8 heterogeneous nucleation and growth. The correspondence between Zn(II) clusters probed by EDX and nascent ZIF-8 crystals visualized by FE-SEM can support this phenomenon clearly. On the whole, the abundant starting sites in Zn-PDA enhanced ZIF-8 growth, and ZIF-8 growth from the rooting-in Zn(II) clusters created an indented and hinged boundary for tightly bonding ZIF-8 layer onto the substrate.
研究领域:
材料科学
·
膜技术
·
配位化学
·
纳米材料
·
气体分离
✓ 已验证
DOI
高影响因子
TALANTA
·
2018
·
IF 4.244
Haoping Wang,Tiantian Kang,Xiaoju Wang,Liheng Feng
A simple Schiff base comprised of tris(2-aminoethyl)amine and salicylaldehyde was designed and synthesized by one-step reaction. Although this compound has poor selectivity for metal ions in acetonitrile , it shows high selectivity and sensitivity detection for Zn(II) ions through adjusting the solvent polarity (the volume ratio of CH 3 CN/H 2 O). In other words, this work provides a facile way to realize a transformation from poor to excellent feature for fluorescent probes . The bonding mode of this probe with Zn(II) ions was verified by 1 H NMR and MS assays. The stoichiometric ratio of the probe with Zn(II) is 1:1 (mole), which matches with the Job-plot assay. The detection limitation of the probe for Zn(II) is up to 1 × 10 −8 mol/L. The electrochemical property of the probe combined with Zn(II) was investigated by cyclic voltammetry method, and the result agreed with the theoretical calculation by the Gaussian 09 software. The probe for Zn(II) could be applied in practical samples and biological systems. The main contribution of this work lies in providing a very simple method to realize the selectivity transformation for poor selective probes. The providing way is a simple, easy and low-cost method for obtaining high selectively fluorescence probes.
研究领域:
分析化学
·
生物化学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2014
·
IF 4.058
Xianfei Zeng,Yang Zhou,Wenhui Ma,Shixing Wang,Keqiang Xie,Jijun Wu,Kuixian Wei
Di(2-picolyl)amine derivates functionalized inorganic/organic hybrid magnetic network was prepared for selective detection and removal of Zn (II). A significant visual color change from colorless to pink-red was observed under the irradiation of 365 nm UV lamp. The inorganic/organic hybrid Fe 3 O 4 @SiO 2 nanoparticles were characterized by TEM, XRD, VSM, FT-IR, and TGA techniques. The fluorescence photograph showed that di(2-picolyl)amine functionalized Fe 3 O 4 @SiO 2 nanoparticles were sensitive and selective to Zn 2+ in acetonitrile solution. The di(2-picolyl)amine functionalized Fe 3 O 4 @SiO 2 nanoparticles with high saturation magnetization can conveniently separate metal ions from aqueous solution. Fluorescence spectra showed that the intensity varied obviously with the concentration of Zn 2+ . The removal efficiency of Zn 2+ can reach as high as 97.1% and the saturated adsorption amount of Zn 2+ is 161.6 mg/g. Langmuir linear fitting can illustrate the well consistent with the adsorption results.
研究领域:
化学
·
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Journal of Analytical Methods in Chemistry
·
2021
·
IF 2.193
Hongchuan Li,Rui Jin,Hongxiang Hu,Yusef Kianpoor Kalkhajeh,Yingying Zhao,Yue Gao,Borui Zhang
Sodium alginate (SA), polyvinyl oxide (PEO), and ceramic nanomaterials were used to prepare alginate composite gel. The present study examined the removal rate and adsorption capacity of alginate composite gel for removal of wastewater As(III), Pb(II), and Zn(II). Batch experiments were conducted to study the influence of experimental parameters such as pH and temperature, as well as the mechanism of As(III), Pb(II), and Zn(II) adsorption with the new adsorbent. The results showed the high efficiency of sodium alginate composite gel for removal of wastewater As(III), Pb(II), and Zn(II). Under the condition of the best liquid-solid ratio and the contact time, the removal rates of As(III), Pb(II), and Zn(II) were 67.42%, 95.31%, and 93.96%, respectively. The pseudo-second-order kinetic equation was superior to fit the adsorption kinetics process. The isothermal adsorption models of As(III) and Pb(II) fitted well with the Freundlich model, and Zn(II) fitted well with the Langmuir model. The results of SEM, EDS, XPS, and FTIR analyses revealed that the adsorption process occurred mainly via chemisorption. The results of the present study suggest that new adsorbents can be effectively utilized for As(III), Pb(II), and Zn(II) removal from water.
研究领域:
环境科学
·
材料科学
·
化学工程
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产品关联
DOI
PubMed
高影响因子
POLYMER TESTING
·
2022
·
IF 4.931
Feng Gan,Junkang Wang,Jiaxiang Wen,Jiaqi Zhou,Jinpeng Mo,Shaobo Han,Yancheng Wu,Ningbo Yi
Developing fully rigid-chain polyimides with reversible sol-gel/gel-sol transitions is of great interest for designing high-performance materials. To date, few approaches have been employed to construct polyimide gels other than hydrogen bonding. Here, we report a polyimide-Zn(II) complex with thermo-responsive sol-gel/gel-sol transition behavior by introducing supramolecular coordination interactions. The tunable dynamic sol-gel behaviors of polyimide-Zn(II) complexes were confirmed using rheological methods. Microstructure analysis shows that coordination interactions occur between the benzimidazole molecules and Zn(II) ions. As a result, the apparent viscosity of the polyimide-Zn(II) complex even rises approximately four orders of magnitude higher than that of the PI-neat oligomer solution. Based on the 2D-correlation spectra and X-ray diffraction results, we deduced that the formation of dense chain stacking caused by coordination effects plays an essential part in the reversible sol-gel transition. As a preliminary experiment, this work gives a novel strategy to construct polyimide gels, showing application prospects in the fabrication of porous polyimide membranes, high-performance polyimide fibers, and aerogels, etc.
研究领域:
材料科学
·
聚合物化学
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超分子化学
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Xinyue He,Tao Zhang,Qing Xue,Yalan Zhou,Hailong Wang,Nanthi S. Bolan,Rongfeng Jiang,Daniel C.W. Tsang
Heavy metals removal from aqueous phase by adsorption technique has recently attracted a considerable interest. Although various adsorbing materials have been developed, introducing more functional groups is considered as the most efficient way to promote the adsorption capacity of the selected adsorbent. However, this approach is usually limited in costly modification precursor and unguaranteed loading efficacy. In this study, waste corn straw was converted to adsorbent precursor by hydrothermal carbonization . The obtained hydrochar (HC) was chemically activated before being modified by polyethyleneimine (PEI). Multiple analysis methods including Scanning Electron Microscopy, Fourier Transform Infrared analysis, and X-ray Photoelectron Spectroscopy analysis verified the alkali activated hydrochar (alkali-HC) was more efficacy to enhance PEI grafting than acid activation . Based on this, the modified HC materials obtained a better adsorption performance. The sorption process of Cu(II) and Zn(II) on the acid-PEI-HC, alkali-PEI-HC, and pristine HC fitted the pseudo second order kinetic and Freundlich model well, and was dominated by chemisorption . Among these adsorbents, the adsorption capacity of alkali-PEI-HC to metal ions was the maximum, which was 207.6 mg/g to Zn(II) and 56.1 mg/g to Cu(II) at 298 K. Regeneration tests showed a result of no less than 60% of its removal capacity was achieved after five cycles. Therefore, alkali-PEI-HC performed as a promising composite sorbent for metal ions. In addition, the study described here has provided a new basis for the utilization of hydrochar (1.08 kWh kg −1 ) derived from agricultural resources as a promising adsorbent precursor.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2013
·
IF 3.498
Bing-bing Sun,Li Qi,Xiao-yu Mu,Juan Qiao,Ming-lin Wang
A facile chiral ligand exchange capillary electrophoresis (CLE-CE) system with Zn(II)- l -alanine as the chiral selector in the presence of β-cyclodextrin has been developed for enantioseparation of dansyl amino acids . The influence of the key factors, such as buffer pH, the ratio of Zn (II) to ligand, the concentration of β-cyclodextrin and the concentration of the complex, were investigated in detail when d , l -Tyr and d , l -Thr were selected as the model analytes. The proposed method showed favorable quantitative analysis property of dansyl d , l -tyrosine with good linearity ( r 2 ≥0.999) and reproducibility (RSD≤3.8%), then, it was applied in studying the activity of tyrosinase through the determination of l -tyrosine concentration variation after being incubated with the enzyme. Further, the inhibitory efficiency of kojic acid and soy sauce on the tyrosinase was investigated. The IC 50 of kojic acid obtained from the sigmoidal inhibitory curve was 21.35 μM. The results imply that the proposed CLE-CE system has the potential in exploring the activity of enzyme and screening the inhibitors of enzyme.
研究领域:
分析化学
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生物化学
·
药学
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产品关联
DOI
PubMed
高影响因子
Journal of Building Engineering
·
2024
·
IF 6.7
Baomin Wang,Weigao Ding,Chengcheng Fan,Fei Liu,Wenxin Lu,Haoxiang Yang
C-S-H gel is a complex cementitious system, and the properties present significant difference with various Ca/Si ratios. The immobilization mechanism of three heavy metals in C-S-H gel at various Ca/Si ratios was investigated in this work from the prospect of the physical adsorption and chemical immobilization. Results showed that higher Ca/Si ratios can result in an increase in silicon chain polymerization, and lower BET specific area, and C-S-H gel with various Ca/Si ratios showed the excellent immobilization for heavy metals. Pb(II) and Zn(II) can form hydroxyl complex polyhedra in C-S-H under strongly alkaline environments, and increase the silicon chain polymerization degree similar to the doping of C-S-H gel by Al. However, Cd(II) was immobilized in the C-S-H gel with the formation of a solid solution under the action of ion exchange with Ca(II), rather than in the form of hydroxyl complex polyhedral and cadmium hydroxide coprecipitates. The highest adsorption capacity of Pb(II) was realized in C-S-H gel with a Ca/Si molar ratio of 0.9, reaching 95.6006 mg/g. Pb(II) was mainly immobilized in C-S-H gel via physical and chemical adsorption, and the effect of chemical adsorption tended to be significant as the Ca/Si molar ratio increased. And the formation of Pb 8 Ca(Si 2 O 7 ) 3 can be detected in C-S-H gel with a higher Ca/Si molar ratio.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2016
·Vol. 3
·期 11
·1363-1375
·
IF 4.532
Hong-Qing Li,Zhong-Yu Ding,Yao Pan,Chun-Hua Liu,Yuan-Yuan Zhu
In this study, we report the synthesis of five one-dimensional Zn(II)-based metallo-supramolecular polymers P0–4 through 1 : 1 complexation of Zn(SO3CF3)2 or Zn(ClO4)2 with ditopic ligands L0–4 which contain two pyridine-dioxazole (pybox) units connected by a rigid conjugated oligo(1,4-phenylene) linker. The new Zn(II)-based polymers displayed relatively high quantum yields in solution and the solid state and showed tunable luminescent colors from blue to yellow owing to the conjugation effect of the ligand and the intra-ligand charge transfer (ILCT) between the coordination site and the chromophore of the ligand. Moreover, the polymer solution could exhibit white light emission by simply regulating the metal/ligand ratio or mixing different polymers. The polymers have been further explored as fluorescent chemosensors (FCs) for detecting nitroaromatic explosives. Among others, P1 possessed the highest capability for detecting picric acid (PA).
研究领域:
超分子化学
·
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
JOURNAL OF CONTROLLED RELEASE
·
2026
·
IF 12.4
Yu Han,Guohua Ma,Kai Zhang,Runcai Xu,Ning Xin,Jingtong An,Ning Wang,Yantao Li
Lipid nanoparticles (LNPs) have emerged as a powerful nanoplatforms contributing to the success of mRNA vaccines. However, the rational design of lipid structures and the optimization of LNP composition, especially via metal-based adjuvants to boost extrahepatic delivery and immune responses, represent a promising yet technically challenging strategy. Herein, we developed a Zn(II)-adjuvanted imidazole-based LNP system that integrates rational lipid design with metal-coordinated self-assembly to achieve synergistic enhancement in delivery and immunogenicity. Initially, a library of 28 imidazole-based ionizable lipids was synthesized and screened, identifying A10–1 LNPs with a well-balanced lipid composition and high transfection efficiency. Furthermore, Zn 2+ coordination with the imidazole headgroup imparts Zn-A10–1 LNPs with enhanced structural stability and delivery performance, leading to improved cellular uptake, efficient endosomal escape, and preferential accumulation in the spleen. These attributes contributed to the robust activation of bone marrow-derived dendritic cells (BMDCs), induced memory T cell responses, and elevated proinflammatory cytokine secretion. In a melanoma model, vaccination with Zn-A10–1 LNPs markedly suppressed tumor progression and promoted the infiltration of OVA-specific CD8 + T cells. Overall, this study underscores the potential of Zn(II)-coordinated LNPs as effective nanoplatforms for extrahepatic mRNA vaccine delivery, offering a promising strategy for the mRNA-based vaccine design and immunotherapies.
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产品关联
DOI
PubMed
高影响因子
ELECTROPHORESIS
·
2013
·Vol. 34
·期 6
·846-853
·
IF 3.261
Haizhi Zhang,Li Qi,Ying Shen,Juan Qiao,Lanqun Mao
Amino acid ionic liquids (AAILs) with l -lysine ( l -Lys) as anion were synthesized and applied as new chiral ligands in Zn(II) complexes for chiral ligand-exchange CE. After effective optimization, baseline enantioseparation of seven pairs of dansylated amino acids was achieved with a buffer of 100.0 mM boric acid, 5.0 mM ammonium acetate, 3.0 mM ZnSO 4 , and 6.0 mM [C 6 mim][ l -Lys] at pH 8.2. To validate the unique behavior of AAILs, a comparative study between the performance of Zn(II)- l -Lys and Zn(II)-[C 6 mim][ l -Lys] systems was conducted. In Zn(II)-[C 6 mim][ l -Lys] system, it has been found that the improved chiral resolution could be obtained and the migration times of the three test samples were markedly prolonged. Then the separation mechanism was further discussed. The role of [C 6 mim][ l -Lys] indicated clearly that the synthesized AAILs could be used as chiral ligands and would have potential utilization in separation science in future.
研究领域:
分析化学
·
分离科学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）