MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 1
·1-7
·
IF 6.232
Fan Chuan,Lv Xiaoxia,Tian Meng,Yu Qingcai,Mao Yueyuan,Qiu Wanwei,Wang Hua,Liu Guodong
A terbium(III)-functionalized zinc(II)-organic framework (Tb-MOF-Zn) is shown to be a viable fluorescent probe for phosphate. The organic ligands 4,4′,4″-[((2,4,6-trimethylbenzene-1,3,5-triyl)tris(methylene))tris(oxy)]tribenzoic acid (H 3 L 3 ) contains multiple carboxyl groups that can react with zinc(II) to yield tubular MOF-Zn. The MOF-Zn was further functionalized with Tb(III) to produce a lanthanide composite of type Tb-MOF-Zn which displays strong fluorescence with excitation/emission maxima at 285/544 nm. Fluorescence is quenched by phosphate because of the specific interaction with Tb(III) in Tb-MOF-Zn. The concentration of Tb-MOF-Zn, reaction time and pH value of the solution were optimized. Fluorescence drops linearly in the 0.01 to 200.0 μM phosphate concentration range, and the detection limit is 4.0 nM. The fluorescent probe was also used to prepare a microdot array on a glass slide for visual detection of phosphate under illumination with UV light.
A terbium(III) functionalized zinc(II)-organic framework was synthesized and used as fluorescent probe for determination of phosphate ions.
研究领域:
分析化学
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材料科学
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PubMed
高影响因子
INORGANICA CHIMICA ACTA
·
2025
·
IF 3.2
Xiao-Shuo Wu,Yi-Wen Wang,Yan-Fen Peng,Shan-Qing Li
Two mixed-ligand luminescent coordination polymers (LCPs) [M(3-SBA)(phen)(H 2 O)] n (M = Pb 2+ 1 ; Zn 2+ 2 ; 3-SBA = 3-sulfobenzoate; phen = 1,10-phenanthroline) were synthesized by hydrothermal reaction and characterized using microanalysis, infrared spectra and thermogravitic analysis. Single crystal X-ray diffraction analysis was conducted on both coordination polymers, revealing their one-dimensional (1-D) chain structure. 1 crystallizes in the triclinic space group P ī, where the Pb 2+ ions display a hemidirected coordination geometry. The neighboring Pb 2+ ions are connected into a 1-D chain by 3-SBA ligands via the bidentate-chelating carboxylate group and monodentate sulfonate group. The phen ligands coordinate to the Pb 2+ ions via two N atoms in a conventional chelation mode. 2 crystallizes in the monoclinic space group P2 1 /n . In 2 , the coordination modes of 3-SBA and 1,10-phenanthroline are identical to those in 1 . Intermolecular hydrogen bonds and π⋯π interactions expand the structures of 1 and 2 into a two-dimensional (2-D) and a three-dimensional (3-D) supramolecular network, respectively. Photoluminescence analysis reveals that 1 emits a rare orange phosphorescence in the solid state at room temperature, with the luminescence lifetime of τ 1 = 2.76 ms and τ 2 = 0.23 ms. In contrast, 2 emits a bright blue fluorescence with a total absolute quantum yield of 7.6 %. The theoretical calculation indicates that the auxiliary ligand 1,10-phenanthroline was responsible for both the phosphorescence of 1 and the fluorescence of 2 , while the 3-SBA ligand primarily facilitates bridging the central metal ions to form the frameworks.
研究领域:
化学
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材料科学
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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
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材料科学
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化学工程
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PubMed
高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 2
·1-8
·
IF 5.479
Li Zhentao,Mao Zhenkun,Chen Zilin
This work reports on the in-situ growth of a metal organic framework (MOF) composed of zinc(II), adeninate and biphenyldicarboxylate on the inner wall of a capillary, and the use of this MOF as a stationary phases in open-tubular capillary electrochromatography. The inner wall of a fused-silica capillary was first modified with 3-aminopropyltriethoxysilane to create surface amino sites, and then the MOF was synthesized by in-situ growth. The modified capillary was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy and X-ray diffraction. The results proved the successful growth of the MOF. The resultant open-tubular column showed good separation selectivity towards neutral compounds, acidic and basic compounds including nonsteroidal anti-inflammatory drugs, sulfa drugs and small biomolecules. In addition, the modified column is stable and repeatable. The precisions (expressed as RSDs) of the retention time for intra-day ( n = 5) and inter-day (n = 5) separations and between columns ( n = 3) are less than 0.5, 1.6 and 4.7%, respectively. Conceivably, this new kind of MOF represents a most useful novel stationary phase in electrochromatographic separations.
Schematic presentation of the open-tubular column modified with bio-MOF-1 by in situ hydrothermal reaction with adeninate, Zn(II) and biphenyldicarboxylate for capillary electrochromatographic separations.
研究领域:
分析化学
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材料科学
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PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 81
·77849-77853
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IF 3.289
Dan Liu,Na Zhang,Xinyu Zhang,Shuai Kong,Jianhua Yu,Zhichao Wu,Jieying Wu,Yupeng Tian,Hongping Zhou
A series of new zinc(II) complexes (Dyes 1–3) were obtained by self-assembly of the donor-bridge-donor (D–π–D) type ligand L with ZnX2 (X = Br, I, SCN). The single crystal of Dye 3 was obtained by slow evaporation of a mixture solution of methanol and dichloromethane. The molecular structure has been determined by X-ray crystallography. Hydrogen bonds (C–H⋯N, C–H⋯S) play significant roles in the final topological structures. Linear and nonlinear optical properties of the ligand and complexes were investigated in details. Experimental results revealed that effective two-photon absorption (TPA) cross sections of these complexes are larger than that of ligand L (18.7 GM) with the maximum values of 88.7 GM (Dye 1), 41.9 GM (Dye 2) and 46.5 GM (Dye 3) in DMF, respectively. The biological imaging result shows that L and Dyes 1–3 had excellent penetrability in living cells.
研究领域:
化学
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材料科学
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生物学
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高影响因子
Nature Communications
·
2020
·Vol. 11
·期 1
·1-12
·
IF 12.121
Hu Yechen,Jiang Bo,Weng Yejing,Sui Zhigang,Zhao Baofeng,Chen Yuanbo,Liu Lukuan,Wu Qiong,Liang Zhen,Zhang Lihua,Zhang Yukui
Protein N-phosphorylation plays a critical role in central metabolism and two/multicomponent signaling of prokaryotes. However, the current enrichment methods for O-phosphopeptides are not preferred for N-phosphopeptides due to the intrinsic lability of P-N bond under acidic conditions. Therefore, the effective N-phosphoproteome analysis remains challenging. Herein, bis(zinc(II)-dipicolylamine)-functionalized sub-2 μm core-shell silica microspheres (SiO 2 @DpaZn) are tailored for rapid and effective N-phosphopeptides enrichment. Due to the coordination of phosphate groups to Zn(II), N-phosphopeptides can be effectively captured under neutral conditions. Moreover, the method is successfully applied to an E.coli and HeLa N-phosphoproteome study. These results further broaden the range of methods for the discovery of N-phosphoproteins with significant biological functions.
研究领域:
生物化学
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蛋白质组学
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分析化学
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高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 12
·1-7
·
IF 5.479
Zhu Xiaolei,Liu Bingchuan,Li Ling,Wu Longsheng,Chen Sijing,Huang Long,Yang Jiakuan,Liang Sha,Xiao Keke,Hu Jingping,Hou Huijie
A delaminated MXene-bismuth (Bi@d-Ti 3 C 2 ) nanocomposite was synthesized for the construction of a microgrid electrochemical sensor via mechanical milling. The Bi@d-Ti 3 C 2 nanocomposite was synthesized by accumulation of Bi(III) on the surface of delaminated Ti 3 C 2 nanosheets through electrostatic attraction and subsequent in-situ growth of bismuth nanorods. Under optimized experimental conditions, the sensor exhibits (a) linear responses to Pb(II), Cd(II) and Zn(II) in the concentration range from 1 to 20 μg L −1 , (b) well separated peak potentials at −0.54 V, −0.76 V and − 1.15 V vs. Ag/AgCl, (c) sensitivities of 0.98, 0.84 and 0.60 μA L μg −1 , and (d) detection limits of 0.2, 0.4 and 0.5 μg L −1 , respectively. This performance is attributed to the uniform dispersion of Bi nanorods on electrically conductive delaminated Ti 3 C 2 MXene, and to the enhanced diffusion due to the microgrid structure.
Schematic representation of a microgrid sensor based on delaminated MXene-bismuth (Bi@d-Ti 3 C 2 ) nanocomposite for the simultaneous electrochemical determination of Pb(II), Cd(II) and Zn(II).
研究领域:
分析化学
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材料科学
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环境科学
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PubMed
高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 7
·1-9
·
IF 5.479
Li Zhentao,Mao Zhenkun,Chen Zilin
A capillary column was modified with a soluble zinc(II)-derived metal-organic cage (MOC) [Zn 2 L] as the stationary phase to obtain a new coating layer for use in open-tubular capillary electrochromatography. The inner surface of the capillary was first coated with a layer of polydopamine. Then, a solution of the MOC in dichloromethane was introduced into the capillary upon which it is bonded both covalently and non-covalently. The resulting coating layer on the capillary was characterized by scanning electron microscopy and Fourier transform infrared spectroscopy. The results demonstrated the successful formation of the [Zn 2 L] modified open-tubular column. The column showed good separation performance towards neutral compounds (such as methylbenzene, ethylbenzene, n-propylbenzene and n-butylbenzene), acidic drugs (such as ibuprofen, ketoprofen, flurbiprofen and diclofenac sodium), food additives (such as parabens, vanillin and related phenolic compounds) and small biomolecules (such as nucleosides and nucleotide bases) by π-interaction and hydrophobic interaction. It also exhibited good precision, the relative standard deviations of the retention time for intra-day, inter-day runs and column-to-column being <1.6%, 2.8%, and 4.0%, respectively.
Schematic presentation of the open-tubular column modified with zinc(II)-derived metal-organic cage by polydopamine-assisted strategy onto the inner wall of capillary for electrochromatographic separations.
研究领域:
分析化学
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材料科学
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高影响因子
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
·
2015
·Vol. 54
·期 8
·1056-1064
·
IF 3.113
Wenjuan Wang,Ling Lin,Jiang Lu,Hui Liang,Hao Feng,Lifen Hu
Triblock copolymers (MPEG- b -PCEMA- b -PHQHEMA) bearing cinnamoyl and 8-hydroxyquinoline side groups with different block length are synthesized by a two-step reversible addition fragmentation chain transfer polymerization of cinnamoyl ethyl methacrylate (CEMA) and 2-((8-hydroxyquinolin-5-yl)methoxy)ethyl methacrylate (HQHEMA), respectively. The self-assembly of MPEG- b -PCEMA- b -PHQHEMA in mixture of THF and ethanol is investigated by varying the ratio of THF and ethanol. Spheric micelles with diameter of 63.7 nm and polydispersity of 0.128 are obtained for MPEG 113 - b -PCEMA 15 - b -PHQHEMA 17 in THF/ethanol with a volume ratio (v/v) of 5/5. The PCEMA inner shell of the resulted micelles is photo-crosslinked under UV radiation to give stabilized micelles. The complex reaction of the stabilized micelles with Zn(II) is investigated under different conditions to give zinc(II)-bis(8-hydroxyquinoline)(Znq 2 )-containing micelles. When the complex reaction is carried out in THF/ethanol (v/v = 5/5) or THF/toluene (v/v = 6/4) with zinc acetate, fluorescent Znq 2 -containing micelles are obtained without obvious change in diameters and morphologies. The fluorescent micelles exhibit green emission with λ max at 520 nm. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016 , 54 , 1056–1064
研究领域:
材料科学
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高分子化学
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高影响因子
Forests
·
2022
·Vol. 13
·期 1
·61
·
IF 3.282
Yuan Zhong,Yuhong An,Kebing Wang,Wanqi Zhang,Zichu Hu,Zhangjing Chen,Sunguo Wang,Boyun Wang,Xiao Wang,Xinran Li,Xiaotao Zhang,Ximing Wang
Heavy metal wastewater treatment is a huge problem facing human beings, and the application degree ofSalix psammophilaresources produced by flat stubble is low. Therefore, it is very important to develop high-value products ofSalix psammophilaresources and apply them in the removal heavy metal from effluent. In this work, we extracted the cellulose fromSalix psammophila, and cellulose nanofibers (CNFs) were prepared through TEMPO oxidation/ultrasound. The aerogel spheres derived fromSalix psammophila(ASSP) were prepared with the hanging drop method. The experimental results showed that the Cu(II) adsorption capacity of the ASSP composite (267.64 mg/g) doped with TOCNF was significantly higher than that of pure cellulose aerogel spheres (52.75 mg/g). The presence of carboxyl and hydroxyl groups in ASSP enhanced the adsorption capacity of heavy metals. ASSP is an excellent heavy metal adsorbent, and its maximum adsorption values for Cu(II), Mn(II), and Zn(II) were found to be 272.69, 253.25, and 143.00 mg/g, respectively. The abandoned sand shrub resource of SP was used to adsorb heavy metals from effluent, which provides an important reference value for the development of forestry in this sandy area and will have a great application potential in the fields of the adsorption of heavy metals in soil and antibiotics in water.Keywords:sandy shrub;cellulose;TEMPO;aerogel;adsorption
研究领域:
环境科学
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材料科学
·
废水处理
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高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2021
·
IF 3.196
Zhiyuan Feng,Lin Cheng,Hong Fan,Jia Liu,Fusheng Han
This article has been retracted: please see Elsevier Policy on Article Withdrawal ( http://www.elsevier.com/locate/withdrawalpolicy ). This article has been retracted at the request of the Editor-in-Chief. In investigating concerns brought up regarding the authenticity of the article, the editors reached out to the corresponding author for an explanation and to request the original data. Per journal policy, the editors, at their discretion, may request deposition of any or all original data files for examination by the reviewers and/or editors. As a result of the author’s unsatisfactory explanation and failure to provide these data—in violation of journal policy—the editors feel that the findings of the manuscript cannot be relied upon. The corresponding author agrees to this retraction.
研究领域:
材料科学
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生物学
·
医学
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DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2024
·
IF 3.9
Xu Mengxia,Wu Rao,Wang Shengqian,Xu Hualan,Zhong Shengliang
The preparation of coordination polymers with good room temperature phosphorescence is the focus of current research. In this paper, zinc and cadmium were used as metal ions and 2,3-pyridinedicarboxylic acid (H 2 L = 2,3-pyridinedicarboxylic acid) was used as organic ligands to successfully synthesize Cd (II) homometallic [CdL]·H 2 O and Zn(II)Cd(II) heterometallic [ZnCdL 2 ]·DMF·5H 2 O coordination polymers microstructures. In addition, morphology, powder X-ray diffraction (PXRD), infrared spectroscopy (IR), elemental analyses, thermogravimetric analysis (TGA) and their luminescence properties were studied. Cd-CP is a micron-sized spherical structure, while Zn/Cd-CP is a flower-like structure formed by the accumulation of sheets. The results show that Cd(II) homo- and Zn(II)Cd(II) heterometallic coordination polymers have quantum yields of 10.05% and 8.54%, respectively. It is worth noting that the lifetime of Cd-CP is 124.62 ms, while the lifetime of Zn/Cd-CP is significantly extended to 363.09 ms after doping with metal ion Zn 2+ . The phosphorescent lifetime of coordination polymers was improved by the heterometallic doping strategy, which provided a new idea and method for the preparation of coordination polymers with long-lived room temperature phosphorescent properties. In addition, the two coordination polymers exhibited blue and cyan fluorescence at 365 nm UV light, respectively, and a green afterglow of about 2 s could be observed with the naked eye when the UV lamp was turned off.
研究领域:
材料科学
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化学
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高影响因子
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