Current Analytical Chemistry
·
2025
·Vol. 21
·期 1
·57-67
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IF 1.7
Mengfei Yang,Jing Shi,Taiming Luo,Xiaozhan Yang
Aims By using terephthalic acid, 2, 5-furandicarboxylic acid, and terbium nitrate hexahydrate, a Tb-MOF with a core-shell structure was successfully designed and prepared. Methods A one-pot method was employed to design and synthesize core-shell Tb-MOF. The morphology, luminescence performance, and stability were well characterized. Results Tb-MOF demonstrated good water stability, acid and alkali resistance, and thermal stability. Tb-MOF was found to have high sensitivity to detect Cr3+, Bi3+, and acetone in an aqueous solution, and the LOD of Cr3+, Bi3+, and acetone were calculated to be 0.18 μM, 4.22 μM, and 0.26%, respectively. The sensing mechanism of Cr3+ and acetone was explained as energy-competitive absorption, and the sensing mechanism of Bi3+ was explained as ion replacement. Conclusion The prepared Tb-MOF can be developed as a multifunctional light-emitting sensor with high selectivity.
研究领域:
材料科学
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分析化学
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产品关联
DOI
高影响因子
ACS ES&T Water
·
2024
·
IF 4.8
Meiou Zhang,Bing Yan,Yong Li,Xianjun Xie
The excessive presence of ammonia and ammonium in groundwater poses potential hazards to human health and ecosystems; thus, accurate measurement of the ammonia nitrogen concentration is very important. Herein, a stable and highly luminescent decorated Tb-MOF was prepared by a hydrothermal and substitution reaction. Under the optimized detection conditions, the decorated Tb-MOF can detect ammonia nitrogen with an exceptional fluorescence enhancement in a wide detection range. The detection limit was determined to be 1.5514 × 10–2 μM in the lower concentration range from 0 to 0.0021 M. In addition, the as-prepared nanosensor also exhibited superior detection selectivity and anti-interference with respect to ammonia nitrogen, and the detection mechanism was investigated as the formation of an isoindole complex from dialdehyde with ammonia nitrogen to induce the energy transfer process. Furthermore, its practical ability was studied in groundwater with a decorated Tb-MOF. The detection in actual groundwater samples proves that this material can be used for practical applications. Our research provides a new method for visual, rapid, and in situ detection of ammonia nitrogen in groundwater.
研究领域:
环境科学
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材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2024
·
IF 10.7
Qiulin Chen,Sheng Li,Xiaoyan Tu,Xinfeng Zhang
The pH of human sweat is highly related with a variety of diseases, whereas the monitoring of sweat pH still remains challenging for ordinary families. In this study, we developed a novel dual-emission Tb-MOF using DPA as the ligand and further designed and constructed a skin-attachable Tb-MOF ratio fluorescent sensor for real-time detection of human sweat pH. With the increased concentration of H + , the interaction of H + with carbonyl organic ligand leads to the collapse of the Tb-MOF crystal structure, resulting in the interruption of antenna effect, and correspondingly increasing the emission of the ligand at 380 nm and decreasing the emission of the central ion Tb 3+ at 544 nm. This Tb-MOF nanoprobe has a good linear response in the pH range of 4.12–7.05 (R 2 = 0.9914) with excellent anti-interference ability. Based on the merits of fast pH response and high sensitivity, the nanoprobe was further used to prepare flexible wearable sensor. The wearable sensor can detect pH in the linear range of 3.50–6.70, which covers the pH range of normal human sweat (4.50–6.50). Subsequently, the storage stability and detection accuracy of the sensors were evaluated. Finally, the sensor has been successfully applied for the detection of pH in actual sweat samples from 21 volunteer and the real-time monitoring of pH variation during movement processing. This skin-attachable Tb-MOF sensor, with the advantages of low cost, visible color change and long shelf-life, is appealing for sweat pH monitoring especially for ordinary families.
研究领域:
生物医学工程
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材料科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Ciyang Zhang,Keren Lu,Linrui Li,Wu Lei,Mingzhu Xia,Fengyun Wang
Oxytetracycline hydrochloride (OTC) is a commonly used over-the-counter antibiotic, valued for its potent antibacterial properties. However, the inappropriate and excessive use of OTC can result in the accumulation of the drug in both the environment and human body, causing significant harm to ecosystems and human health. Therefore, the development of a fast and sensitive method for detecting OTC is of great significance. Lanthanide metal–organic frameworks (LnMOFs) can effectively excite lanthanide metals to emit long-lifetime, narrow and stable fluorescence based on the antenna effect, but their application in fluorescence sensing is rarely reported. In this work, a strongly fluorescent material Tb-MOF was synthesized by a facile solvothermal method using 1,2,4,5-phenylenetetracarboxylic acid (H 4 btec) and 1,10-phenanthroline (1,10-phen) as organic ligands and lanthanide metal Tb as the luminescent center. Tb-MOF is a stable material in water and shows excellent linearity with OTC in the concentration range of 0 ∼ 70 μM, with low detection limit (0.12 μM) and luminescence color transition from bright green to dark green during the detection process. X-ray diffraction, UV–vis absorption and fluorescence lifetime analyses revealed that the fluorescence quenching of Tb-MOF by OTC is caused by the inner filter effect in static quenching. Test strips for OTC detection were successfully prepared using Tb-MOF. These strips are not only low cost and easy to prepare but can also be used as portable sensing devices that can be easily distinguished by the naked eye during OTC testing. This study not only presents a fluorescent probe for the detection of OTC in water but also offers a practical method for converting fluorescent luminescent materials into functional devices for OTC detection.
研究领域:
分析化学
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环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2020
·Vol. 50
·期 4
·1300-1306
·
IF 4.174
Xiao-Yang Zhao,Hui Yang,Wen-Yuan Zhao,Jia Wang,Qi-Shan Yang
Bacillus anthracis is an extremely dangerous bacterium that is associated with high morbidity and mortality. 2,6-Pyridine dicarboxylic acid (DPA) is a major biomarker of Bacillus anthracis, and it is of great significance to be able to detect DPA in a rapid, efficient, and sensitive way. Herein, a 3D network metal–organic framework (Tb-MOF) with excellent thermal and water stability was synthesized. Tb-MOF could be used to selectively detect DPA via green fluorescence recovery with a fluorescence intensity enhancement factor of 103. In addition, due to the high detection sensitivity (a detection limit of 2.4 μM) and excellent anti-interference abilities, Tb-MOF was less affected by environmental factors when compared with a “turn-off”-response luminescence sensor; it can be employed as a promising “turn-on” luminescence sensor for DPA in the future. Finally, quantum calculations showed that a large energy difference appeared between the 5D4 level of Tb3+ and the first excited triplet energy level of H2-DHBDC2−, which was the reason that the complex did not show characteristic Tb3+ emission.
研究领域:
生物化学
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材料科学
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医学检测
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
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IF 4.9
Yuxin He,Hecun Zou,Xinhui Jiang,Yanrui Wei,Siqiao Li,Tong Wu,Zhengwei Zhang
Foodborne residue of carbendazim (CBZ) poses a major threat to human health. Here, we rationally designed a smartphone-assisted fluorescent sensor based on bimetallic-organic framework (Eu/Tb-MOF) for ultrasensitive and visual monitoring of CBZ. The Eu/Tb-MOF nanorods fabricated using Eu 3+ /Tb 3+ as metal nodes and homobenzoic tricarboxylic acid (H 3 BTC) as organic ligand exhibit superior optical properties. After adding CBZ, the strong orange fluorescence of Eu/Tb-MOF nanorods was suppressed by the inner filter effect (IFE). The linear ranges of the fluorescent sensor were 0.01–15 and 15–80 µg/mL, with a detection limit as low as 7.09 ng/mL. The analyses of CBZ residue in tomato and orange samples showed satisfactory recoveries of 99.32 %–101.97 % and low relative standard deviations of 0.87 %–3.44 %., verifying the practicality of the probe for CBZ. Notably, a simple and portable smartphone-assisted sensing platform based on the Eu/Tb-MOF nanorods was successfully constructed for quick, visual, and real-time monitoring of CBZ residue. This work provides an efficient onsite analytical method for assessment and warning-early of CBZ to safeguard food quality
研究领域:
食品安全
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分析化学
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光学传感
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DOI
高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 9
·1-15
·
IF 5.3
Wu Yuqi,Shan Xueling,Zhao Ziyu,Jiang Ding,Yan Guoping,Wang Wenchang,Shiigi Hiroshi,Hu Zhibang,Chen Zhidong
A dual-ligand strategy was employed to construct an electrochemiluminescence (ECL) sensing platform based on dual-ligand Tb-MOF and Ag 3 PO 4 @TCPP for sensitive detection of chloramphenicol (CAP), demonstrating its potential applications in environmental monitoring and food safety. The dual-ligand Tb-MOF can be used as a co-reactant promoter, facilitating the rapid electroreduction of S 2 O 8 2− to generate more oxidative mediator SO 4 •− , thereby enhancing the luminescence efficiency of the luminescent material Ag 3 PO 4 @TCPP. Furthermore, the integration of Ag 3 PO 4 @TCPP emitter could effectively overcome the aggregation-caused quenching (ACQ) effect of TCPP and then increase the luminescence intensity by seven-fold, which was attributed to the efficient electron transfer and energy transfer between Ag 3 PO 4 and TCPP. Additionally, ECL spectra and electron spin resonance (ESR) spectra were utilized to investigate the possible ECL mechanism of the dual-ligand Tb-MOF/Ag 3 PO 4 @TCPP system. As a proof of concept, we successfully established an ECL biosensor for detecting CAP, which displayed a wide linear range (10 −6 ~ 10 −15 M) and low detection limit (8.29 × 10 −16 M), demonstrating practical feasibility. This study introduces a dual-ligand strategy to enhance ECL signals, expands the application scope of dual-ligand lanthanide MOFs, and provides new insights into designing high-performance sensing platforms. Graphical
研究领域:
分析化学
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材料科学
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环境监测
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食品安全
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生物传感技术
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Junya Song,Beibei Zhao,Yiren Wang,Xinfang Liu,Zheng Cheng,Xiaoyu Zhang,Xun Feng
In this study, a new Tb-MOF fluorescence probe was developed for the detection of malachite green (MG) in real aquatic products. Fluorescence sensing experiments revealed that MG can effectively quench the green fluorescence of Tb-MOF suspensions, and the detection process exhibits the advantages of high sensitivity, a wide linear range (0–80 μM), a low detection limit (10.8 nM) and a rapid response time. Selective detection of MG is achieved primarily through fluorescence resonance energy transfer (FRET) and photoinduced electron transfer (PET) mechanisms. Furthermore, a smartphone-assisted Tb-MOF-based agar slice detection platform was constructed for the visual and quantitative detection of MG. Additionally, the on-site detection of MG in crucian and shrimp samples was accomplished with high recoveries (99.8 %-107.99 %) and low relative standard deviations (RSD < 2.2 %). This developed detection platform introduced a low-cost, portable and user-friendly approach for MG detection.
研究领域:
分析化学
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环境科学
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食品安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Huijun Li,Xin Xu,Yonghui Liu,Yanan Hao,Zhouqing Xu
Developing multifunctional luminescent switches for detecting various poisons are urgent given the continuous deterioration of the environment. Herein, a new porous fluorescent metal–organic framework [Tb 2 (TPTC)(DMA) 4 (NO 3 ) 2 ] n (HPU-25) was initially designed. Then, fluorophore molecule tris(2,2′-bipyridine) dichlororuthenium(II) hexahydrate (Ru(bpy) 3 2+ ) was loaded onto HPU-25 by a simple post-synthesis strategy to prepare a new ratio fluorescence sensor Ru(II)@HPU-25 . As a sensor, it can detect 2,6-pyridinedicarboxylic acid (DPA) content in real-time, with high sensitivity and selectivity, without being disturbed by probe concentration and environment. Evident changes in fluorescence color and intensity are observed in distinguishing DPA contents. In addition, after detecting DPA, it can be used for consecutive visual detection of dichromate anion (Cr 2 O 7 2− ) in water. This multifunctional fluorescence sensor could make up for the defects of single fluorescence and single function of the traditional fluorescence sensor by using the dual strategies of ratio sensing and cascade sensing. Interestingly, DPA and Cr 2 O 7 2− in samples can be visually detected rapidly in real-time through the chroma acquisition APP on smartphone. More importantly, we also designed the combination of two logic gate operations for sensing the two targets. In the poison detection in daily life, these intelligent applications of fluorescence sensors have a broad development space.
研究领域:
材料科学
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分析化学
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环境科学
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纳米技术
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传感器技术
✓ 已验证
产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2024
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IF 10.7
Haomin Fu,Zhiyuan Xu,Zhou Yang,Jianping Lei
High excitation potential is recognized as a harmful factor for the biological activity of biomacromolecules, such as proteins and nucleic acids, in electrochemiluminescence (ECL) biosensing. Developing low-potential ECL luminophores is vital for improving ECL accuracy in actual sample sensing. In this work, based on porous metal-organic framework (MOF) structure with multiple active sites and energy transfer between the excited ligands and Ln nodes, we designed a series of Ln-MOFs and observed ECL emission at low potential, providing a novel method to realize low-potential ECL. The MOF nanoemitters were prepared using 1,3,5-tri (4-carboxyphenyl)benzene ligand and several lanthanide ions as nodes through mild hydrothermal reaction. Interestingly, strong ECL emission at +0.75 V of peak potential was observed in the ECL-potential curve of Tb-based MOF using 2,2′,2″-nitrilotriethanol as coreactant, which was beneficial for reducing background interference in biosensing, and this ECL emission was attributed to the energy transfer between Tb and excited ligand. This low-potential ECL was then applied to construct an ECL biosensor with newly developed Cas12a-based method for selective detection of microRNA-155 without the help of strand displacement or reverse transcription. For this ECL system, the limit of detection was 0.78 nM, and the overall detection time was 2.5 h. The Ln-MOF nanoemitter provides a robust ECL platform to selectively detect various targets by integrating new bio-related techniques.
研究领域:
生物传感
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分析化学
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分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2022
·
IF 3.656
Jing Shi,Xiaozhan Yang,Hui Pan,Wenlin Feng
A new Tb-MOF [Tb(BDC)TDC] based on terephthalic acid (H 2 BDC) and thiophene-2,5-dicarboxylic acid (H 2 TDC) was synthesized successfully by solvothermal method . The crystal structure, morphology, thermal stability and photoluminescence properties were characterized in detail. Under the excitation of 310 nm, Tb-MOF presents bright green luminescence in aqueous solution. Bismuth-ion (Bi 3+ ) can quickly and specifically quench the luminescence of Tb-MOF, and the response time is only 9 s. The quenching mechanism is that Tb 3+ in the metal center of Tb-MOF is replaced by Bi 3+ , resulting in luminescence quenching and realizing the Bi 3+ detection. The quenching constant ( K sv ) and the detection limit for Bi 3+ are 0.024 μM −1 and 4.98 μM, respectively. The synthesized Tb-MOF can be used as the sensor for trace Bi 3+ detection in the aqueous solution.
研究领域:
材料科学
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分析化学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2025
·
IF 4.6
Zuyao Fu,Ze Chen,Lingfeng Yang,Hao Wang,Jing Xie,Zhaoyang Ding
The misuse of malachite green (MG) has led to significant water pollution, and its metabolite, leucomalachite green (LMG), poses a serious health risk. Rapid detection of drug residues in aquaculture is crucial for food safety. In this study, the dual-emission fluorescent sensor RhB@Tb-MOF (RhB = Rhodamine B) was synthesized based on fluorescence resonance energy transfer (FRET). MG significantly quenches the fluorescence of RhB and affects the fluorescence of Tb-MOF to different extents, making it a suitable ratiometric fluorescent sensor for sensitive MG detection with a limit of detection (LOD) of 9.6 × 10 −3 μg/mL. Although LMG did not affect the fluorescence of RhB@Tb-MOF, it formed a ratio with the fluorescence of RhB@Tb-MOF due to its intrinsic fluorescence properties, and the LOD was 3.5 × 10 −3 μg/mL. Additionally, increasing MG concentrations shifted the sensing system's color from pink to blue, with a colorimetric LOD of 0.15 μg/mL. This paper introduced a colorimetric/fluorescent dual-mode sensor for MG and LMG detection. Furthermore, this sensor was combined with smart labeling technology to achieve rapid on-site quantification of MG, offering significant potential for broad application.
研究领域:
食品安全
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分析化学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）