MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Yinjiang Leng,Jing Zhang,Tao Xu,Yi Ma,HuiBo Luo,Danqun Huo,Suyi Zhang,Changjun Hou
A triple-channel R6G@Eu-MOF fluorescent probe was developed for multi-signal sensing. • A six-channel sensor array was constructed using two solvent-dependent fluorescence responses. • The sensing mechanism involved hydrogen bonding and Eu excited-state/O–H oscillator coupling. • The platform enabled discrimination of organics, Baijiu, and other distilled liquors. Rapid discrimination of Baijiu is of interest for preliminary quality assessment and authenticity screening. In this work, a single-probe multi-channel fluorescent sensor array was developed based on R6G@Eu-MOF for Baijiu discrimination. By integrating rhodamine 6G (R6G) and Eu 3+ into one MOF platform, R6G@Eu-MOF provided three intrinsic emission signals at 550, 594, and 615 nm. Unlike conventional sensor arrays that usually require multiple sensing materials, this strategy expanded the three emission outputs into a six-channel response pattern by using DMF and ethanol as two distinct probe-dispersing microenvironments. Owing to differences in polarity, hydrogen-bonding ability, and chemical composition, different analytes induced characteristic fluorescence-response fingerprints. The response behavior was attributed to hydrogen-bonding interactions, modulation of the R6G microenvironment, coupling of the Eu excited state with O H oscillators, and possible inner filter effects. Based on this strategy, 16 representative organics and EtOH-water mixtures with different ratios were effectively discriminated. Under the current experimental conditions, 16 representative commercial Baijiu samples were clearly separated in the LDA analysis, and blind-sample validation showed a recognition accuracy of 90.6%. The array was also extended to other distilled liquors. This work provides a simple and material-efficient fluorescent-array strategy for pattern-recognition analysis of complex liquor samples. Scheme 1 Schematic illustration of R6G@Eu-MOF fluorescent sensor array for Baijiu discrimination. Download: Download high-res image (150KB) Download: Download full-size image
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高影响因子
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
·
2016
·Vol. 22
·期 8
·1147-1155
·
IF 1.87
Habimana Fabien,Huo Yanxia,Jiang Sai,Ji Shengfu
Europium metal organic framework (Eu-MOF) was synthesized using Europium as metal ion center and 1,3,5-trimesic acid (H 3 BTC) as organic ligand under hydrosolvothermal conditions. The dynamic performance of the Eu-MOF material in adsorption desulfurization processes was investigated using a solution of thiophene/n-octane as sulfur containing quality model oil. The adsorption desulfurization kinetics equations and adsorption desulfurization isotherms of Eu-MOF were also studied. The results have shown that Eu-MOF catalyst has very good adsorption desulfurization abilities under optimum desulfurization conditions of m adsorbent : m model oil ratio of 1:100 and reaction temperature of 303 K. After 4 h of desulfurization reaction, the adsorption rate and the adsorption desulfurization capacity has reached 64.70% and 24.59 mgS/gMOF respectively. The Eu-MOF adsorption desulfurization process of thiophene on Eu-MOF fits well the quasi two level dynamic model using Langmuir isotherm, Freundlich isotherm and Dubinin–Radushkevich isotherm equations. The Dubinin–Radushkevich isotherm can be a suitable description of adsorption process for Eu-MOF absorbent on thiophene/n-octane mode oil. However the Freundlich isotherm equation model with fitting R
2 value closer to 1, can be a better description for the adsorption of thiophene. The adsorption of thiophene over Eu-MOF absorbent has two types of adsorption that occur simultaneously. These are the monolayer physical adsorption and the multilayer chemical adsorption.
研究领域:
材料科学
·
环境化学
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高影响因子
ANALYST
·
2025
·
IF 3.3
Lingling Li,Doudou Lei,Pengyue Song,Qingbin Xu,Lihua Huang,Xiao Ma,Lidong Zhou,Ping Zhang,Weijun Kong
Sensitive detection of carbendazim (CBZ), a widely monitored bactericidal pesticide globally, is critical to reduce risks to human health. In this study, Eu ions were embedded into a rigid metal–organic framework (MOF), to prepare Eu-MOF as a fluorescence signal source, which was subsequently post-modified with polyethyleneimine (PEI) for efficient coupling with anti-CBZ monoclonal antibodies (mAbs). On this basis, a PEI@Eu-MOF-mAbs fluorescent probe-based lateral flow immunosensor (LFIS) was developed for CBZ analysis, enabling dual-mode detection: rapid visual qualitative observation by the naked eye and intelligent fluorescence quantitative analysis by using a smartphone. PEI modification not only effectively improved the zeta potential, fluorescence intensity, quantum yield, and biological coupling ability of the Eu-MOF to mAbs, but also significantly enhanced the stability and anti-interference performance of PEI@Eu-MOF. The introduction of PEI@Eu-MOF-mAbs probes characterized by strong fluorescence emission, long fluorescence lifetime, and low background interference, markedly improved the detection sensitivity of the LFIS platform for trace CBZ. Under optimal conditions, the detection limit for smartphone-assisted fluorescence analysis was as low as 1.3 pg mL−1 with a wide linear detection range of 0.25–125 ng mL−1 for CBZ. The recoveries in spiked Panax notoginseng samples were 93.40–106.0% with RSD <1.69%, indicating outstanding reliability of the newly developed LFIS platform for accurate detection of CBZ. In comparison with seven other common pesticides, CBZ produced significantly weakened and stable fluorescence, indicating good specificity and stability of the developed platform over 4 weeks. Compared with current analytical methods, the smartphone-assisted PEI@Eu-MOF-mAbs dual-modal LFIS platform exhibited advantages of simple construction, easy operation, rapid response, obvious visualization to the naked eye, and intelligent quantitative analysis, highlighting its broad application potential for rapid screening and accurate point-of-care detection of CBZ in a large number of foods and agricultural products.
研究领域:
分析化学
·
食品安全
·
生物传感
·
免疫学
·
环境监测
·
药物残留检测
·
纳米材料应用
·
即时检测技术
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高影响因子
JOURNAL OF LUMINESCENCE
·
2026
·
IF 3.8
Kai Jiang,Tianxiang Hang,Ciyang Zhang,Mingzhu Xia,Qingli Hao,Wu Lei
A series of Eu x Tb 1-x L {Eu x Tb 1-x (5-bop) 3 (H 2 O) 4 } ∞ were synthesized using 3,5-dicarboxyphenylboronic acid (5-bop) as ligands via hydrothermal method. 5-bop ligand functions as an effective antenna, harvesting light and transferring the absorbed energy to both Eu 3+ and Tb 3+ . Tb 3+ acts as an intermediary donor, transferring a majority of its energy to the Eu 3+ . Eu 0.1 Tb 0.9 L is the best compound among Eu x Tb 1-x L series which exhibits excellent water stability and higher luminescence intensity compared to single-metal MOFs. It can selectively recognize dopamine hydrochloride (HDA) through fluorescence quenching, featuring fast response speed, high sensitivity, and strong resistance to interference. Additionally, the mechanisms responsible for the fluorescence quenching of Eu x Tb 1-x L include dynamic quenching and UV competitive absorption. This work provides an effective approach for the rapid and convenient detection of HDA in biological fluids.
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DYES AND PIGMENTS
·
2018
·
IF 3.767
Yuchi Zhang,Hanzhi Yao,Yan Xu,Zhiguo Xia
Engineering novel ratiometric temperature sensors with high temperature sensitivity is still of a great challenge in versatile temperature measurement fields. Herein, a self-calibrated optical luminescent thermometer based on Eu 3+ /Mn 2+ dual-activator was fabricated in the same nanocomposite system, which integrated the photoluminescence originated from the temperature-insensitive Eu-metal organic framework with weak coupling effect and the temperature-sensitive Zn 2 GeO 4 :Mn 2+ with strong coupling effect. Specifically, the as-prepared nanocomposites composed of lanthanide MOF Eu-BTC (BTC = 1,3,5-benzenetricarboxylic acid) and Zn 2 GeO 4 :Mn 2+ nanorods possessed Eu 3+ /Mn 2+ dual red/green emission, which displays excellent ratiometric temperature-sensing functions and also has high relative sensitivity ( S r ) of 4.1% ºC −1 when they are used as ratiometric luminescent thermometer in the physiological temperatures (25–45 °C). These results demonstrate that such a design strategy with synergistic weak/strong coupling luminescence is useful and the as-obtained Eu-MOF/Zn 2 GeO 4 :Mn 2+ nanocomposites can be potential for temperature sensor applications.
研究领域:
材料科学
·
光学工程
·
生物医学工程
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Liwei Cui,Yiqian Zhang,Weifeng Chen,Jingyi Liu,Heli Zhang,Hongshuai Zhu,Jian Zou,Weidan Chang
The extensive use of fluoroquinolones (FQs) leads to food residues, which present a significant risk to human health. A portable smartphone-assisted detection platform based on Tb/Eu-MOF nanomaterial was established for the detection of FQs, with the enrofloxacin (ENR) serving as a representative sample. Five Tb/Eu-MOFs with different bimetallic proportions were synthesized, and the Tb/Eu-MOFs (3:1) served as the optimal sensing element. The Tb/Eu-MOF nanomaterial suspension demonstrated a color change from orange-red to pale yellow as a result of fluorescence resonance energy transfer with ENR, attaining a LOD of 0.004 μM and a broad linear range of 0.005–25 μM. The Tb/Eu-MOF was incorporated into an agar slice and coupled with a smartphone for detection to improve portability. A smartphone-based agar slice platform was developed with a linear range of 5–150 μM and a LOD of 4.7 μM. This detection platform offers an innovative, low-cost and portable approach for FQs detection.
研究领域:
分析化学
·
纳米技术
·
食品安全
·
环境科学
·
生物医学工程
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PubMed
高影响因子
Food Analytical Methods
·
2026
·Vol. 19
·期 10
·274
·
IF 3
Wang Shiyi,Feng Kunyang,Zhao Minzhu,Wang Yusen,He Xin,Wang Qi,Wang Hanting,Li Jianbo
Organophosphorus pesticides (OPs) are extensively used for pest control in crops, yet their residues pose potential threats to food safety and human health. Therefore, this study developed a dual-ligand metal–organic framework with stable red fluorescence as a ratiometric fluorescent sensor for highly sensitive detection of omethoate (OMT). The sensor utilizes Eu 3 ⁺ as the metal node and employs 3,5-dicarboxyphenylboronic acid (BBDC) and 2-hydroxyterephthalic acid (BDC-OH) as mixed organic ligands. The introduction of OMT significantly quenches the red fluorescence of Eu-BBDC/BDC-OH through the inner filter effect (IFE), enabling the quantitative analysis of OMT. The sensor exhibits a good linear response within the ranges of 0.025–0.3 μg/mL and 0.3–0.9 μg/mL, with a detection limit of 7.35 ng/mL, and demonstrates excellent selectivity. Recoveries of OMT from strawberry and cucumber samples ranged from 95.74% to 101.1%, with relative standard deviations of 0.59%-5.91%, validating the reliability and practicality of the method. Moreover, a paper-based sensor integrated with smartphone RGB analysis was constructed, allowing rapid, real-time, and visual detection of OMT residues.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Yue Li,Ping Liu,Xiaoxue Han,Longyu Guo,Haiyan Jiang,Yongchao Ma
A heterojunction with g-C 3 N 4 @Zn/Eu-MOF covalent interface was synthesized. • g-CN@MOF can be used for photocatalytic degradation and fluorescence detection of ofloxacin. • Efficient removal of ofloxacin in milk by g-CN@MOF foam. • g-CN@MOF can detect ofloxacin residues in milk through smartphone-assisted color recognition. Ofloxacin (OFL) is widely used in medicine and animal husbandry, and its residues in milk raise substantial food-safety concerns. Herein, a dual-functional covalently coupled g-C 3 N 4 @Zn/Eu-MOF composite (g-CN@MOF) was constructed through a one-pot hydrothermal route. FTIR and XPS analyses indicated the formation of C N C O linkages between g-C 3 N 4 and the MOF, yielding an interfacially coupled type-II heterojunction that promoted charge separation. The optimized g-CN@MOF-30 achieved 69.21% removal of 10 mg L −1 OFL within 120 min under visible light, with •O 2 − and •OH identified as the dominant reactive species. Meanwhile, the fluorescence intensity ratio F 440 /F 595 showed a linear response to OFL over the range of 0–100 μM, affording a detection limit of 0.011 μM through an IFE-dominated ratiometric sensing mechanism. After immobilization in sodium alginate foam, the composite exhibited convenient recyclability and enabled OFL removal from pretreated milk samples, while smartphone-based RGB analysis provided rapid visual semi-quantification with recoveries ranging from 100.3% to 109.9%. Download: Download high-res image (269KB) Download: Download full-size image
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RSC Advances
·
2025
·Vol. 15
·期 36
·29989-29994
·
IF 4.6
Xin-Yu Liu,Shu-Jing Zhou(Co-author),Fang Luan,Yu-Hang Wang,Xiu-Juan Ma,Li-Yuan Sui,Yan-Ru Feng
Metal-organic frameworks (MOFs), characterized by their high porosity, large specific surface area, and tunable pore structures, have emerged as promising host materials for advanced functional applications. In this study, two organic dyes, fluorescent bleacher (CBS) and coumarin (C6), exhibiting blue and green fluorescence, respectively, were co-encapsulated into europium (Eu)-based MOFs, where Eu3+ served as the central metal to introduce red emission. The ligand employed was 9-butylcarbazole-2-carboxylhydrazide thiophene (Cz). A white fluorescent powder, coumarin/fluorescent bleacher/carbazole derivatives@Eu (C6/CBS/Cz@Eu), was synthesized using an in situ encapsulation method. The C6/CBS/Cz@Eu was incorporated into PVA to prepare a film. The resulting C6/CBS/Cz@Eu film demonstrated a high-quality white light emission under excitation by commercial 400 nm light-emitting diode (LED) chips, achieving ideal Commission Internationale de l'Éclairage (CIE) chromaticity coordinates of (0.34, 0.35) and a correlated color temperature (CCT) of 5267 K. This strategy offers a versatile and scalable method for the design and fabrication of white light-emitting materials, beneficial for the development of next-generation white light-emitting diode (WLED) technologies.
研究领域:
材料科学
·
光电子学
·
无机化学
·
纳米技术
·
固态照明
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PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Wenxue Wang,Hui Cao,Rong Fan,Ming Zhu,Rui Zhang,Pengtao Liu
Metal-organic frameworks (MOFs) are porous hybrid materials made of metal and organic linkers. Combining MOFs with polymers enhances their performance and addresses the issue of low stability. In this study, a uniform nanoscale Eu(III)-based metal-organic framework (Eu-MOF) was synthesized and grown in situ on TEMPO(2,2,6,6-tetramethylpiperidinyl-1-oxide)-oxidized cellulose nanofibrils (TOCNF), resulting in the formation of Eu-MOF@TOCNF fluorescence films through vacuum filtration. These films exhibited favorable mechanical properties, high transmittance, and stable fluorescence characteristics within the pH range of 3–11. The film produced the characteristic emission peak of Eu 3+ , recognized the selective quenching of Fe 3+ within 0–100μM, and displayed an inverse relationship between fluorescence intensity at 616 nm and Fe 3+ concentration. This approach holds significant promise for Fe 3+ detection in solutions and offers a novel strategy for developing highly efficient optical sensors based on fluorescence specificity.
研究领域:
材料科学
·
化学
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高影响因子
ANALYST
·
2019
·Vol. 144
·期 22
·6617-6624
·
IF 4.019
Jie Gao,Yingxu Chen,Weihao Ji,Zhonghong Gao,Jingdong Zhang
A composite of CdS nanoparticles and a europium metal organic framework (Eu-MOF) (CdS/Eu-MOF) was synthesized. The unique properties of MOFs help to improve the photoelectrochemical (PEC) properties of CdS by reducing charge carrier recombination and utilizing a broader spectrum for light harvesting. Under visible light illumination, the photocurrent of the CdS/Eu-MOF composite modified electrode was about 2.5-fold higher than that of the CdS modified electrode. When an ampicillin (AMP)-binding aptamer was immobilized on the CdS/Eu-MOF modified electrode as a recognition element, a self-powered PEC aptasensor exhibiting a specific photocurrent response to AMP was constructed. Several experimental conditions such as the ratio of CdS to MOF, the coating amount of the CdS/Eu-MOF suspension and the concentration of the aptamer were studied. Under optimum conditions, the photocurrent of the developed sensor was linearly related to the logarithm AMP concentration in the range of 1 × 10−10 to 2 × 10−7 M, with a detection limit (3S/N) of 9.3 × 10−11 M. Moreover, this sensor exhibited excellent selectivity, good repeatability and desirable stability. It was successfully applied to the detection of AMP in lake water and milk samples.
研究领域:
材料科学
·
分析化学
·
环境科学
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PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2026
·
IF 12.5
Yuting Zhang,Xinmiao Qi,Binzhen Liu,Liangkun Li,Xin Guo
Orange peel is an abundant polysaccharide-rich agro-industrial residue that is often discarded, causing resource loss and environmental burden. Here, we valorize orange peel-derived pectin into a mechanically robust and photostable fluorescent hydrogel (EuCPH) by embedding uniformly dispersed Europium-based metal-organic framework decorated cellulose nanofibril (Eu-MOF@CNF). The resulting red-emissive EuCPH enables simultaneous levofloxacin (LEV) capture and fluorescence sensing. EuCPH-4 exhibits an ultrahigh Langmuir capacity of 1388.6 mg g −1 and a low limit of detection (LOD) of 0.12 μg L −1 . Adsorption follows the Langmuir isotherm and pseudo-second-order kinetics, consistent with chemisorption-dominated uptake. EuCPH-4 retains 83.8% of its capacity after five cycles with negligible Eu leaching (<8 ppb) and sustains stable performance over ten fixed-bed regeneration cycles. With low-cost orange peel-derived pectin and wood-derived CNF, EuCPH can be produced at ~0.02 CNY g −1 , providing a scalable and economically viable hydrogel platform for antibiotic monitoring and remediation.
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高影响因子
危险品化学品经营许可证（带存储）