INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Jia Wang,Deyue Yan,Wei Huang
A fluorescence metal-organic framework [Zn 3 (APT) 4 ]·2H 2 O (Zn-APT) was synthesized from Zn(NO 3 ) 2 ·6H 2 O and 2-amino-6-purinethiol (ATP) by the solvothermal reaction. Zn-APT has a novel compact structure with a nbo topology type. The analyses of single-crystal diffraction reveal that Zn-APT crystallizes in a cubic crystal system and F d 3 ¯ c space group. Based on a large amount of π-conjugated organic ligands of ATP and d 10 metal center of Zn 2+ , Zn-APT can emit strong luminescence. It can be used as a fluorescent probe to detect Fe 3+ ion effectively. The detection limit is 0.28 μM and K sv (quenching efficiency) is 2.1 × 10 4 M −1 . In addition, Zn-APT can adsorb hemoporphyrin dihydrochloride to produce a red-brown crystal Zn-APT-PH. Interestingly, it can also be used to detect Fe 2+ ion efficiently with the detection limit of 0.12 μM and K sv of 1.9 × 10 4 M −1 .
研究领域:
化学
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环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Xiupei Yang,Ling Jiang,Baowen Zhang,Jie Hu,Xiaoyan Cui,Qian Zhang
Accurate monitoring of copper ions (Cu 2+ ) and lipoic acid (LA), essential trace elements and antioxidants in vegetables, is critical for food safety and human health. Here, we developed mercaptopurine-stabilized gold-silver bimetallic nanoclusters (MP-AuAg NCs) as a fluorescence 'turn-off' probe for Cu 2+ detection, achieving a linear response of 0.05–20 μM with a detection limit of 23 nM (LOD). To enhance sensitivity, a ratiometric probe (Zn MOF@MP-AuAg NCs) was engineered by in situ growth of zinc metal organic frameworks (Zn MOF) in the nanoclusters, which reduced Cu 2+ LOD to 4 nM (linear range: 0.015–0.50 μM). Interestingly, the Cu 2+ quenched system functioned as a 'turn on' sensor for LA detection, offering a dual range response: exponential correlation from 0.3 to 80 μM (R 2 = 0.997) and linear quantification from 0.3 to 25 μM (LOD = 94 nM, R 2 = 0.998). Validated in spinach samples, the method demonstrated exceptional precision (recoveries: 96.5–102 %) and precision (RSD <3.12 %), confirming its reliability for sequential Cu 2+ -LA analysis in complex food matrices. This work establishes a versatile sensing platform with enhanced sensitivity and practical utility for food quality monitoring.
研究领域:
食品科学
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分析化学
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生物医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Ru Liu,Peng Xi,Ning Yang,Bowen Cheng
The complex microenvironment of diabetic wounds often hinders the healing process, ultimately leading to the formation of diabetic foot ulcers and even death. Dual monitoring and treatment of wounds can significantly reduce the incidence of such cases. Herein, a multifunctional Janus membrane (3D chitosan sponge-ZE/polycaprolactone nanofibers-ZP) was developed by incorporating the zinc metal–organic framework, europium metal–organic framework, and phenol red into nanofibers for diabetic wound monitoring and treatment. The directional water transport capacity of the resulting Janus membrane allows for unidirectional and irreversible drainage of wound exudate, and the multifunctional Janus membrane creates up to a 99% antibacterial environment, both of which can treat wounds. Moreover, the pH (5–8) and H2O2 (0.00–0.80 μM) levels of the wound can be monitored using the color-changing property of phenol red and the fluorescence characteristic of Eu-MOF on the obtained membrane, respectively. The healing stages of the wound can also be monitored by analyzing the RGB values of the targeted membrane images. This design can more accurately reflect the wound state and treat the wound to reduce bacterial infection and accelerate wound healing, which has been demonstrated in in vivo experiments. The results provide an important basis for early intervention in diabetic patients.
研究领域:
生物材料学
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医学工程
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2024
·
IF 6.3
Jianbo Ren,Tao Hu,Wenbo Zhang,Li Li,Wenhui Yuan
Photothermal phase change materials (PCM) are employed for the efficient conversion and storage of solar energy. In this work, a Cu-Zn bi-metallic metal-organic framework (MOF) was synthesized and combined with expanded graphite (EG), followed by high-temperature carbonization to prepare the supporting material for polyethylene glycol (PEG). Through the high-temperature carbonization process, nano-metallic copper is uniformly dispersed on the surface of the EG, accompanied by the formation of a new porous structure resulting from the evaporation of Zn vapour. The nano metallic copper particles enhance the thermal conductivity and photo-thermal conversion efficiency of the composite PCM, while the porous structure generated by Zn vapour improves the adsorption capacity of PEG. The composite PCM demonstrated a high phase change enthalpy of 174.6 J/g and excellent thermal reliability, with only a 2.29 % reduction in enthalpy after 200 melting-freezing cycles. Additionally, the thermal conductivity of the composite PCM reached 6.096 W/(m·K) which is 26.1 times higher than that of pure PEG, while the photo-thermal conversion efficiency achieved was 88.69 %. These properties indicate that the PEG/EG/Cu-Zn-MOF derived carbon composite PCM has great potential for applications in solar energy storage and conversion.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Chunlin Chen,Xinyu Bai,Guoqing Xiao,Fei Zhong,Ruili Li,Hao Li,Chunyan Chen,Chuanlin Mou,Bin Wang
Alginate fibers (ORF), as an organic fiber, have the natural advantage of good compatibility with epoxy resins. However, it is unable to adequately serve as a reinforcing residual char at high temperature due to its greater tendency to form amorphous char. To address this shortcoming, Co, Zn-MOF was uniformly immobilized on the surface of ORF, which accelerated the transformation of resin matrices to stabilized carbonaceous materials. Simultaneously, the Co, Zn-MOF could induce the conversion of the ORF into residual carbon and retain its fiber structure, thus serving the purpose of reinforcing the residual carbon. After that, the organosilicon was loaded on the surface of ORF/Co,Zn-MOF to obtain ORF/Co,Zn-MOF@Si composite flame retardant, which could form a stable silicon network at high temperature, thus effectively slowing down the heat transfer process. The experimental results proved that the ORF@Co,Zn-MOF@Si filled EP exhibited maximum tensile strength (12.2 ± 0.51 Mpa) and impact strength (18.3 ± 0.56 KJ/m 2 ). Further, the ORF@Co,Zn-MOF@Si/EP composite coating had a significantly lower backside temperature (166.4 °C) than other coatings, signaling optimum thermal insulation efficiency. It is worth mentioning that the ORF@Co,Zn-MOF@Si/EP samples achieved a significant residual carbon retention rate (31.9 %) in the heat loss assessment session, which is attributed to the catalytic effect of Co and Zn ions on carbon generation within the Co,Zn-MOF framework. The expansion height and expansion rate of the ORF@Co,Zn-MOF@Si/EP sample were 19.60 mm and 15.2, highlighting a significant enhancement in foaming behavior. Besides, some fibrous structures can be clearly observed in the carbon layer of ORF@Co,Zn-MOF@Si/EP, which can be explained by the catalytic carbon-forming effect of Co,Zn-MOF and the protective effect of silicon network.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Food Analytical Methods
·
2023
·Vol. 16
·期 6
·1110-1119
·
IF 2.9
Zhong Ming,Huang Lijun,Zhou Binbin,Liu Yuliang,Fang Mian,Wang Ying
A new type of magnetic zinc metal–organic framework molecularly imprinted polymer (MZMMIP) was created by a crystal growth method, combined with molecular imprinting technology. The material was designed to solve the problems associated with metal–organic frameworks, which have the disadvantages of small pore size and low selectivity in the detection field. MZMMIPs were characterized by SEM, XRD, FTIR, TGA, BET, etc. The results showed that MZMMIPs achieved good crystalline form, excellent magnetic separation ability, rich pore structure, and large specific surface area (602.4 m 2 /g). Furthermore, the results of the adsorption experiment show that the crystal growth method with molecular imprint technology not only improved the MZMMIP adsorption capacity (64 mg/g) and microporous aperture, but also accelerated its adsorption (3 min) and elution rate (10 min) on the target product. With the introduction of molecular imprinting technology, MZMMIPs show a suitable adsorption selective performance (selection factor is 1.6) in the adsorption performance test of structural and nonstructural analogs of pyrene. MZMMIPs display good stability and reusability (the adsorption capacity of MZMMIPs decreased by only 21.8% after 10 elution times). The detection method in the study was successfully implemented for the determination of pyrene in vegetable oil, and achieved an excellent detection effect. The detection limit of MZMMIPs to pyrene is 0.11 µg/kg. The recovery ranged from 93.34 to 95.92%.
研究领域:
材料科学
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环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2020
·
IF 3.232
Shasha Feng,Fubin Pei,Yi Wu,Jingjing Lv,Qingli Hao,Tinghai Yang,Zhaoyang Tong,Wu Lei
A novel ratiometric fluorescent sensor based on Förster resonance energy transfer (FRET) platform was designed for riboflavin (RF) detection. The graphitic carbon nitrides quantum dots - Zn-MOF composite (g-CNQDs@Zn-MOF) was used as the fluorescent probe . In the FRET system, g-CNQDs@Zn-MOF and RF acted as donor and acceptor, respectively. The probe exhibited high sensitivity and good selectivity to RF, and had been successfully used for the detection of RF in milk and vitamin B 2 tablets. The detection limit of the sensor was 15 nM. The strategy expanded the application of MOF in sensing filed and provided a new method for the detection of RF.
研究领域:
分析化学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2021
·Vol. 38
·期 1
·186-191
·
IF 1.307
You Dongyu,Zhao Yujuan,Yang Weiting,Pan Qinhe,Li Jiyang
T he large amount of microplastic pollution in the aquatic environment has been regarded as a major challenge facing the world. Although some traditional water treatment processes can effectively remove microplastics in the millimeter range, research is still needed to solve the problem of removing smaller microplastics. Here, we made a durable zinc metal-organic framework-based composite material ZIF-8@Aerogel by in situ growing ZIF-8 on wood aerogel fibers, which can successfully remove microplastics in simulated water and seawater. The removal efficiencies on micro/nano plastics including poly(1,1-difluoroethylene)(60–110 nm) and polystyrene(90–140 nm) reached 91.4% and 85.8%, respectively. This work is expected to provide a new and efficient way to remove small-sized microplastic particles in the environment.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL SCIENCES
·
2019
·Vol. 35
·期 6
·639-644
·
IF 1.618
Shan Xueling,Pan Yuting,Chen Xiaohui,Wang Wenchang,Chen Zhidong
A novel electrochemiluminescence (ECL) sensor for detection of brilliant blue FCF (BB) has been developed using Ru@ Zn-MOF/nafion modified GCE (glass carbon electrode) in this research. Different from conventional method for usage of Ru(bpy) 3 2+ in solution-phase, Ru(bpy) 3 2+ here was immobilized on a zinc-metal-organic-framework (Zn-MOF). After adding BB, a significant quenching phenomenon of ECL intensity was observed. The behavior of BB on the quenching effect of Ru(bpy) 3 2+ /Zn-MOF in different conditions was investigated thoroughly and the detection limit was achieved to 2.5 × 10 −8 M in an optimized condition. Furthermore, the interference of some conventional ions and amino acids to the detection of BB was also investigated. Additionally, the composite showed a good effect on the detection of BB in commercial samples. The proposed sensor provided a promising platform for food safety analysis, environmental monitoring and clinical testing.
研究领域:
分析化学
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食品安全
·
环境监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
·
2015
·Vol. 14
·期 9
·1644-1650
·
IF 2.267
Liu Chang,Yan Bing
We synthesize a zinc zeolite-type metal—organic framework, the zeolitic imidazolate framework (ZIF-90), which exhibits an intense blue luminescence excited under visible light. Luminescent studies indicate that ZIF-90 could be an efficient multifunctional fluorescence material for high sensitivity metal ions, anions and organic small molecules, especially for Cd 2+ , Cu 2+ , CrO 4 2− and acetone. The luminescence intensity of ZIF-90 increases with the concentration of Cd 2+ and decreases proportionally with the concentration of Cu 2+ , while the same quenched experimental phenomena appear in the sensing of CrO 4 2− . With the increase of the amount of acetone, the luminescence intensity decreases gradually in the emulsions of ZIF-90. The mechanism of the sensing properties is studied in detail as well. This study shows that ZIF-90 could be a useful luminescent sensor for metal ions, anions and organic small molecules.
研究领域:
材料科学
·
化学传感器
·
光学材料
✓ 已验证
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Yu-Ting Xue,Zhencheng Chen,Xin Chen,Guo-Cheng Han,Xiao-Zhen Feng,Heinz-Bernhard Kraatz
A non-enzymatic glucose sensor was successfully prepared by the electrodeposition methods assembling of Zn-metal-organic frameworks/multi-walled carbon nanotubes (Zn-MOF/MWCNTs) on gold electrode (GE). The sensor showed better catalytic oxidation performance for glucose at very low potential (0.20 V) compared to the bare GE (0.30 V), because the modified complex can effectively increase the active site and reaction contact area. The sensor exhibited a wider linear detection range of 0.020–8.14 mM with a detection limit of 0.037 mΜ. In addition, the electrochemical response of the sensor to glucose showed good selectivity, which was further verified in the complex serum environment by the standard addition recovery method. The recovery of the sensor was in the range of 98.52–102.65%, with a relative standard deviation (RSD) of no more than 8.00%, showing the potential applications in real testing.
研究领域:
生物化学
·
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Jinying Pang,Qifeng Gao,Lili Yin,Shuhua Zhang
In this study, banana cellulose nanofibres (BNCFs) were prepared using waste banana stems. A novel two-dimensional (2D) Zn-MOF was synthesized using 5-(1-hydro-imidazolyl) isophthalic acid as the ligand. The results of the X-ray diffraction, thermogravimetry , and scanning electron microscopy analyses confirmed the stability of Zn-MOF. Thus, Zn-MOF was used to catalyze BNCFs grafted with poly(ε-caprolactone) (ε-CL) (BGCL) by homogeneous ring-opening polymerization in ionic liquid . The grafting ratio of the BGCL prepared by Zn-MOF reached 84.12 %, which was 10.03% higher than that catalyzed by 4-dimethylamino pyridine which was the state-of-the-art catalyst for this reaction. The banana cellulose nanofibres grafted with ε-CL reactions followed the coordination-insertion mechanism, which was confirmed by the theoretical calculations using the Materials Studio software. The cytotoxicity results indicated that BGCL was not only non-toxic to Hela cells but also promoted Hela cell growth within a certain concentration range. Therefore, this study demonstrated the promising potential of BGCL for biomedical applications, and the high efficiency, non-toxicity, and stability of Zn-MOF as the catalyst. Further, this will provide a theoretical basis for the application of MOFs as catalysts in polymerization reactions.
研究领域:
材料科学
·
生物医学工程
·
催化化学
✓ 已验证
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）