APPLIED ORGANOMETALLIC CHEMISTRY
·
2024
·
IF 3.7
Zixuan Zhou,Yuhan Jiang,Xin Luo,Ying Zhang,Lei Wang,Yaguang Sun,Jingwei Liu,Mingchang Zhu,Jinchao Cao,Shuangyan Wu
Milk, owing to its nutritional value, is a staple commodity in daily life. Ensuring its integrity and authenticity is paramount for researchers and the food industry. To evaluate spoilage and adulteration of milk, we proposed a robust and reliable optical method to guarantee milk quality by utilizing riboflavin as an internal biomarker. By precisely controlling the content of Eu 3+ , Tb 3+ , and Gd 3+ ions, a two-dimensional ratiometric luminescence lanthanide coordination polymer (Ln-CP) with adjustable emission centers was synthesized for the detection of riboflavin (RF), leveraging a Förster resonance energy transfer (FRET) and photoinduced electron transfer (PET) process. This method demonstrates high sensitivity and selectivity towards RF and has been successfully applied to the detection of RF in both milk and calf serum.
研究领域:
分析化学
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食品科学
·
材料科学
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DOI
高影响因子
FOOD CHEMISTRY
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2020
·
IF 6.306
Fei Qu,Han Wang,Jinmao You
Herein, a new type of coordination polymer networks (CPNs), where both of 2,6-Pyridinedicarboxylic acid (DPA) and guanylate monophosphate (GMP) chelate with Eu 3+ , are firstly synthesized (GMP/Eu/DPA). After mixing with GMP/Tb CPNs, a novel ratiometric dual lanthanide nanoprobe is constructed. Alkaline phosphohydrolase (ALP) specifically induces the cleavage of phosphate ester group in GMP. Therefore, the addition of ALP causes the fluorescence quenching of GMP/Tb, and then the emissions of GMP/Eu/DPA enhance as the result of the formation of Eu/DPA complexes. Glyphosate, as an organophosphorus pesticide, can vehemently inhibit the catalytic activity of ALP, so a ratiometric detection of glyphosate can be achieved with a linear range from 0.015 to 8.45 μg/mL. The present strategy also shows good recoveries for measuring glyphosate in rice, millet, soybean, milk, tap water, and mountain spring water, suggesting a great potential for applications in foods.
研究领域:
分析化学
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食品科学
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环境科学
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PubMed
高影响因子
CRYSTENGCOMM
·
2026
·
IF 2.4
Jicong Lin,Yushu Dai,Jintao Xu,Mengjie Xu,Xieming Xu,Hao Lu,Shaofan Wu,Shuaihua Wang
LiLuF4 microcrystalline scintillation materials possess several advantages, including high chemical stability, simplified fabrication processes, and tunable emission wavelengths. These materials demonstrate significant potential in fields such as X-ray imaging, biodiagnostics, photodynamic therapy, advanced anti-counterfeiting, and thermally activated delayed imaging. However, the relatively weak radioluminescence intensity of single rare-earth-doped LiLuF4 crystals has constrained their practical applications. In this work, Ni2+ co-doped LiLuF4:Tb microcrystalline scintillators are synthesized via a hydrothermal method. The incorporation of heterovalent Ni2+ ions effectively enhanced both the radioluminescence and thermoluminescence intensities of LiLuF4 microcrystals. After doping with 3 mol% Ni2+ ions, the radioluminescence intensity increased by 125.34%. The X-ray detection limit of LiLuF4:Tb,Ni reaches 3.7966 nGy s−1, which is considerably lower than the medical imaging requirement of 5.5 μGy s−1. Furthermore, a large-area flexible composite scintillation film of dimensions 80 mm × 145 mm was prepared to achieve high-spatial-resolution X-ray imaging of 25 LP mm−1@20% MTF, indicating that heterovalent-doped fluoride scintillators possess exceptional application potential.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Z.H. Xu,C. Wang,X.Z. Xiong,W.B. Dai
Borate-based phosphors, as a critical class of luminescent materials, have garnered significant attention due to their stable crystal structures, wide bandgaps, excellent thermal stability, and robust spectral tunability, making them essential components in white light-emitting diodes ( w LEDs) technologies. In this work, a high-symmetry Ba 3 Y 2 B 6 O 15 (BYB) phosphor co-doped with Bi 3+ , Tb 3+ , Eu 3+ , and Lu 3+ was synthesized via a multi-step sol-gel method. Different photoluminescence (PL) behaviors of Bi 3+ , Tb 3+ and Eu 3+ in BYB were systematically revealed. By modulating the PL spectrum via energy transfer (ET) from Bi → Tb → Eu, ‘cool’ white-light emission was achieved. A strategy of replacing Y 3+ with Lu 3+ was adopted to adjust the crystal field splitting and symmetry. This modification broadens the blue light coverage range in Bi 3+ PL, increases the hypersensitive transition of Eu 3+ ( 5 D 0 → 7 F 2 ), increase the intensity of red emission. They achieved their optimal balance ultimately. The improved structural compactness and rigidity reduced electron-phonon coupling effects, endowing the phosphor with superior chemical/thermal stability. Finally, a high-performance phosphor-converted w LED (pc- w LED) device with chromaticity coordinates of (0.361, 0.358), a luminous efficacy (LE) of 95.2 lm/W, was fabricated by integrating the optimized BYB: Bi/Tb/Eu/Lu phosphor with a UV LED chip using remote ‘cap’ packaging, demonstrating exceptional performance.
研究领域:
材料科学
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光学工程
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无机化学
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固态照明
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功能材料
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DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Huan Dai,Zichen Xu,Ke Yang,Jianchao Zhou,Jing Wang,Ya Zhang,Yudong Shen,Xiaolan Liu,Yue Jiang,Wei Xu
The utilization of metal–organic frameworks (MOFs) as fluorescent sensors for the detection of environmental and chemical reagent pollutants as well as heterogeneous catalysis for CO2 conversion represents a crucial avenue of research with significant implications for the protection of human health. In this work, a Tb(III)-based three-dimensional metal–organic framework, [Tb(L)·4DMF]n (Tb-MOF) (H3L = 5′-(4-carboxy-3-hydroxyphenyl)-3,3″-dihydroxy-[1,1′:3′,1″-terphenyl]-4,4″-dicarboxylic acid), has been structurally conformed by single-crystal X-ray crystallography. It possesses a 1D rhombus channel along the [010] direction, featuring a pore size of 6.02 × 9.13 Å. Tb-MOF was proved to be a multifunctional material for a fluorescent sensor and CO2 cycloaddition heterogeneous catalyst material. Fluorescence sensing studies revealed that Tb-MOF demonstrates high sensitivity, selectivity, and favorable regeneration properties, making it an effective chemosensor for detecting the metamitron (MMT) pesticide and trace water in organic solvents. The mechanism of fluorescence quenching by MMT and water was elucidated by a combination of XRD, UV–vis absorption spectra, IR spectra, theoretical calculations, and fluorescence lifetimes. The material was also utilized for the sensing of MMT and water in paper strips. Additionally, the open Tb3+ site as Lewis acidic centers makes Tb-MOF achieve efficiently catalytic conversion for CO2 and epoxides to cyclic carbonates. Moreover, a possible catalytic mechanism for the conversion of carbon dioxide to cyclic carbonates was proposed by in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) experiments. It also exhibited recyclability for up to five cycles without noticing an appreciable loss in sensing or catalytic efficiency.
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高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2026
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IF 4.1
Zhao Ziyu,Shan Xueling,Wu Yuqi,Jiang Ding,Wang Wenchang,Du Xiaojiao,Chen Zhidong
The residue of chloramphenicol (CAP) in animal-derived foods and the environment poses a serious threat to human health, highlighting the urgent need for sensitive, selective, and rapid detection methods. In this study, a novel electrochemiluminescence resonance energy transfer (ECL-RET)-based sensing platform was developed for the ultrasensitive detection of CAP, employing a Tb-PTC/Ag MOF composite as the energy donor and hollow ZIF-8@polydopamine (ZIF-8@PDA) as the energy acceptor. Coordination of Tb 3+ with PTCA ligands within the MOF framework effectively suppressed aggregation-induced quenching, while the incorporation of Ag MOF further enhanced and stabilized the ECL intensity through synergistic effects. Efficient ECL-RET was achieved owing to the spectral overlap between the UV-vis absorption of the acceptor and the ECL emission of the donor, with a high energy transfer efficiency of 75.1%, significantly improving the sensitivity of the sensor. The proposed platform exhibited a wide linear range from 10 −5 to 10 −15 mol L −1 for CAP detection, with an exceptionally low detection limit of 1.57 × 10 −15 mol L −1 . By integrating the structural advantages of MOFs with the high sensitivity of the ECL-RET strategy, this work establishes a robust and promising platform for trace-level CAP monitoring in environmental and food samples. Graphical abstract
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高影响因子
MICROCHIMICA ACTA
·
2018
·Vol. 185
·期 7
·1-8
·
IF 5.705
Sun Chongmei,Yuan Fangzheng,Li Huihui,Wu Xia
A nanoprobe was developed for the fluorometric determination of the neurotransmitter dopamine (DA). It is based on the synergistic enhancement action of citrate and gold nanoparticles (AuNPs) on the luminescence of Tb(III). AuNPs serve as substrates of surface enhanced fluorescence (SEF). Citrate, in turn, acts as a spacer for the SEF effect, a co-ligand of Tb(III) complex, and a recognizing component for DA. The synergistic action of citrate and AuNPs significantly increases the intrinsic green fluorescence of Tb(III) (best measured at excitation/emission peaks of 300/547 nm). Under the optimum conditions, the fluorescence intensity increases linearly in the 3.0 to 200 nM DA concentration ranging (with an R 2 value of 0.9959), and the limit of detection (at S/N = 3 ) is 0.84 nM. The nanoprobe shows good selectivity for DA among other interfering neurotransmitters, some amino acids and ions. The method was applied to the detection of DA in human serum samples where it gave recoveries ranging from 100.5 to 102.9%.
Schematic of a Tb(III) composite fluorescent nanoprobe for the sensitive determination of dopamine (DA). Citrate and gold nanoparticles (AuNPs) synergistically enhance the fluorescence of Tb(III)-DA.
研究领域:
分析化学
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生物医学工程
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神经科学
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DOI
PubMed
高影响因子
OPTICAL MATERIALS
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2021
·
IF 3.08
Panpan Du,Qi Zhu,Xiaodong Li,Xudong Sun,Byung-Nam Kim,Ji-Guang Li
A series of garnet-type Li 6 CaLa 2(1- x ) Nb 2 O 12 : x RE phosphors (LCLN: x RE, RE = Pr, Sm, Tb and Dy) were prepared via sol-gel processing and subsequent calcination for the first time, with the course of phase evolution and the characteristics of the LCLN host and RE 3+ luminescence being investigated in detail. It was found that ∼900–1000 °C is a suitable temperature for precursor calcination to produce the garnet phase and LCLN has a relatively low phonon energy (∼725 cm −1 ) and a relatively wide bandgap (∼4.53 eV) for luminescence. The LCLN:0.012Pr, LCLN:0.04Sm, LCLN:0.06 Tb and LCLN:0.06Dy typical phosphors were analyzed to have dominant excitation/emission bands at ∼278/489, 265/614, 268/549 and 264/581 nm, emission colors of white, orange, green and yellowish white, and fluorescence lifetimes of ∼0.43, 0.74, 0.90 and 0.44 ms, respectively. Temperature-dependent photoluminescence found that the four phosphors maintained ∼28, 37, 45 and 56% of their room-temperature intensities at 423 K, with activation energies for thermal quenching of ∼0.37, 0.29, 0.34 and 0.25 eV, respectively. The results demonstrated that the Li-stuffed LCLN garnet could be a suitable host for UV excitable multicolor phosphors.
研究领域:
材料科学
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光学
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高影响因子
CRYSTENGCOMM
·
2022
·Vol. 24
·期 14
·2542-2550
·
IF 3.756
Ming-Yang Cao,Chun-Li Hu,Peng-Fei Chen,Qian Wang,Bing-Xuan Li,Yuan Lin,Jiang-Gao Mao
Three nonlinear optical materials Cd4REO(BO3)3 (RE = Sm, Eu, Tb) have been synthesized through high-temperature solid-state reactions. In their crystal structures, Cd(1)O8 and Cd(2)O6 polyhedra are interconnected via sharing edges and corners into a 3D anion framework with two types of tunnels based on 4- and 7-membered rings; the BO3 groups are grafted into the above-mentioned types, creating new tunnels based on Cd4B3 seven-membered rings, which are filled by RE3+ cations. Powder SHG measurements revealed that the Cd4REO(BO3)3 (RE = Sm, Eu, Tb) samples display SHG signals that are approximately 1.2, 5.6 and 1.5 times that of the KDP sample. In addition, Cd4EuO(BO3)3 and Cd4TbO(BO3)3 emit red and green light, respectively. The lifetime of the Eu(5D0) state for λex,em = 464, 610 nm in Cd4EuO(BO3)3 is measured to be about 1.43 ms whereas the lifetime of the Tb(5D4) state for λex,em = 376, 543 nm in Cd4TbO(BO3)3 is measured to be about 1.01 ms.
研究领域:
材料科学
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晶体学
·
光学
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高影响因子
TALANTA
·
2025
·
IF 6.1
Terefe Tafese Bezuneh,Fuchun Nan,Xin Li,Tongtong Kou,Zilong Wu,Fangfang Lang,William W. Yu
Designing highly sensitive method for the analysis of α-glucosidase activity is of critical value for diagnosis and therapy of diabetes. Here, we employed self-assembly of guanosine 5′-monophosphate nucleotide (GMP) with metal ions (Cu 2+ and Tb 3+ ) to prepare multifunctional Tb-CuGMP NPs. Owing to Cu 2+ -catalytic center, the as-prepared Tb-CuGMP NPs exhibits ascorbic acid oxidase (AAO)-like and peroxidase (POD)-like self-cascading catalytic activity. The AAO-POD cascade system can catalyze the oxidation of AA into dehydroascorbic acid (DHAA) with the generation of H 2 O 2 , which serves as a substrate for POD-like activity and catalyzed into • OH radicals. Based on these enzymatic reactions, a unique colorimetric detection approach in which nanozyme/TMB/AA produced oxidized TMB with characteristic blue color and DHAA sensitized Tb 3+ to turn-on the fluorescence of the detection system was proposed. Furthermore, enzymatic hydrolysis of 2-O-a-D-glucopyranosyl-L-ascorbic acid (AA2G) into AA was coupled with AAO-POD cascade system to realize highly sensitive detection of α-glucosidase activities. Interestingly, the as-constructed dual-mode assay reduces the LOD of α-glucosidase to 5.1 × 10 −4 U/mL. To sum up, this work provides new horizon for the development of efficient multifunctional nanomaterial with integration of biocatalysis and bioassay into a single material.
研究领域:
纳米技术
·
酶活性分析
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生物传感
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生物检测
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催化
·
糖尿病诊断
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Zhi Wang,Dongquan Leng,Yan Zhang,Tingting Wu,Hongmin Ma,Xiang Ren,Zhen Yu,Qin Wei
Aflatoxin B1 (AFB1) poses severe threats to human health even at trace levels, necessitating the development of rapid and sensitive detection methods. This work presents an innovative self-powered photoelectrochemical aptasensor for ultrasensitive AFB1 monitoring. Specifically, zinc phthalocyanine-sensitized MgIn 2 S 4 as a high-performance photoanode, where the sensitization narrows bandgap and extends light absorption, generating enhanced photocurrent for biological detection. Furthermore, Au@CuGaO 2 as a stable photocathode that provides abundant biomolecule binding sites while circumventing the false-positive issues inherent in conventional anodic sensing platforms. Notably, SiO 2 @Tb-MOF as a dual-function quencher that simultaneously competes for visible light excitation and creates steric hindrance to block electron donor access, achieving significant signal amplification. The synergistic effects of these components yield exceptional analytical performance, including an ultra-wide linear range (0.01 pg/mL to 100 ng/mL) and a low detection limit (0.0032 pg/mL). The satisfactory anti-interference, reproducibility and stability provide a solid foundation for the application of this sensing platform.
研究领域:
分析化学
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环境监测
·
食品安全
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生物传感器与生物电子学
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材料科学
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纳米技术
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Yangcheng Liu,Baoli Xu,Shengxue Wang,Qilin Liu,Zheng Xiang,Wanwei Jiang,Yang Wang
The excessive accumulation of benzophenone (BP) endocrine disruptors highlights the need to develop novel materials capable of efficient removal and precise, simultaneous monitoring of multiple BPs. Based on the characteristics of BPs, an accordion-like NH 2 –MXene-based composite material with rice grain–like 1,3,5-tris(4-aminophenyl)-benzene-1,3,5-benzenetricarbaldehyde covalent organic frameworks (TB–COF) on its surface after modification (TB–COF@NH 2 –MXene) was developed. The obtained TB–COF@NH 2 –MXene exhibited rich functional groups, an appropriate pore structure and suitable surface properties. Moreover, it exhibited a high saturation adsorption capacity (292.47–316.23 mg g −1 ), rapid kinetics (25 min) and excellent dynamic adsorption ability (1359–2548 BV). It demonstrated good selectivity and an excellent ability to capture BPs at low concentrations. Notably, dispersive solid-phase extraction based on TB–COF@NH 2 –MXene in combination with high-performance liquid chromatography–diode array detector enabled the simultaneous detection of trace BPs in river water, cookies, vermicelli, milk, coffee, tea and infant formula samples. This study provided practical guidance on environmental and food safety solutions.
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高影响因子
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