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
·
分析化学
·
环境科学
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DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Haiping Wang,Xueren Qian,Xianhui An
In recent years, along with the extensive application of ciprofloxacin (CIP), it has gradually become one of key environmental issues to be solved urgently. A novel fluorescent responsive nanocellulose composite film was successfully prepared by combining TEMPO-oxidized cellulose nanofibers (TOCNF) and terbium coordination polymer (Tb-AMP), in aqueous medium at room temperature via in-situ synthesis to detect CIP. CIP could supply energy for terbium ion through antenna effect to achieve the green fluorescence of Tb-AMP@TOCNF under 365 nm UV lamp. The transparency of the Tb-AMP@TOCNF was 88% when the deposition ratio of Tb-AMP on TOCNF was 7.2% and the environmental stability was good, which was conducive to fluorescent detection. As CIP concentration increased, the fluorescence intensity of Tb-AMP@TOCNF increased, and fluorescence intensity had a good linear relationship with CIP concentration in the range of 1–8 μM ( y = 4.57 + 3.17 x , R 2 = 0.999, LOD = 0.0392 μM). It was a new way to realize future quantitative colorimetric analysis of pollutants.
研究领域:
环境科学
·
材料科学
·
分析化学
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DOI
高影响因子
DYES AND PIGMENTS
·
2026
·
IF 3.9
Nanhai Zhang,Rui Zhang,Renchun Fu,Qinghe Song,Guangjun He,Shixing Wang,Libo Zhang
A series of europium/terbium bimetallic metal–organic frameworks (Eu x Tb 1-x -MOFs) with tunable luminescence and high photoluminescence quantum yield (PLQY) were synthesized via a one-step hydrothermal method using 2,2′-biphenyldicarboxylic acid and 1,10-phenanthroline as mixed ligands. By precisely adjusting the Eu 3+ /Tb 3+ ratio, a continuously tunable emission color from red to green was achieved. The optimized material, Eu 0.04 Tb 0.96 -MOF, exhibited a superior PLQY of 52.17% along with excellent thermal, aqueous, pH and photostability. This material served as a dual-functional platform. As a high-performance fluorescent sensor, Eu 0.04 Tb 0.96 -MOF enabled the multiplexed and ultrasensitive detection of three priority water pollutants: Hg 2+ , CrO 4 2− and Cr 2 O 7 2− . It achieved high sensitivity (Ksᴠ: 7.609 × 10 4 M −1 for Hg 2+ , 4.369 × 10 4 M −1 for CrO 4 2− and 1.894 × 10 5 M −1 for Cr 2 O 7 2− ) and nanomolar-level detection limits (8.55 nM, 50 nM and 6.95 nM, respectively). The sensor also demonstrated outstanding selectivity, anti-interference capability, reusability and practical feasibility. Mechanistic investigations revealed that the quenching by CrO 4 2− /Cr 2 O 7 2− proceeded via competitive absorption, while Hg 2+ detection involved intramolecular photoinduced electron transfer (PET) within preformed complex. Furthermore, leveraging the precisely tunable emission of Eu x Tb 1-x -MOFs, advanced anti-counterfeiting and information encryption applications were demonstrated, including (1) a high-security QR code system based on spectral encoding for rapid mobile verification, (2) multicolor fluorescent inks for patterns hidden under daylight but visible under UV illumination, and (3) high-contrast visualization of latent fingerprints with clear ridge details. This study presents the rational design of tunable high-efficiency Ln-MOFs, establishing a versatile dual-functional platform that bridges high-performance environmental sensing and advanced optical security applications.
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2016
·
IF 2.758
Jie Chen,Xiuqing Zhou,Ye Sheng,Xiaoming Xie,Murad M.A. Abualrejal,Meiqi Chang,Zhan Shi,Haifeng Zou
A series of size controllable Tb 3+ and/or Eu 3+ activated nano-sized silica phosphors have been successfully synthesized through a facile sol-gel method. The structure, morphology, compositions, and luminescence properties of as-prepared samples were well investigated using X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectrometer (EDS), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) and photoluminescence spectroscopy (PL). The results showed that all as-prepared samples were spherical nanoparticles but the sizes reduced gradually with the temperature increased from 25 °C to 65 °C, which was contrary to the BET surfaces as well as the luminescence intensity. Under ultraviolet excitation, the SiO 2 :Ln 3+ (Ln=Eu, Tb) spherical nanoparticles showed characteristic red and green emissions corresponding to f-f transition of Eu 3+ and Tb 3+ , respectively. Moreover, the luminescence emissions of samples can be tuned from green to yellow, orange and red by co-doping the Tb 3+ and Eu 3+ ions in different concentration ratio into the SiO 2 host due to the efficient dipole–dipole energy transfer mechanism from Tb 3+ to Eu 3+ under 377 nm excitation. These results show that as-prepared phosphors may find potential applications in color display fields.
研究领域:
材料科学
·
光学
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产品关联
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 35
·19524-19531
·
IF 2.936
Qian Liu,Chun-Na Yan,Yu-Chao Li,Mei-Fang Li,Li-Ping Bai,Li-Ping Wang,Guang Li
Amphiphilic copolymers, poly(styrene)-block-Tb complex (PS-b-Tb complex), were synthesized by reversible addition fragmentation chain transfer (RAFT) polymerization. The honeycomb structured porous films were fabricated via dropping the PS-b-Tb complex copolymer solutions on glass substrates by the breath figures method (BFM). The structure and composition of the amphiphilic copolymer PS-b-Tb complex were confirmed by gel permeation chromatography (GPC), Fourier transform infrared spectroscopy (FT-IR) and 1H nuclear magnetic resonance spectroscopy (1H NMR). The surface morphology and elemental mapping of the highly ordered porous films were investigated by field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDX) and laser scanning confocal microscopy (LSCM). The results indicated that the solvent type and copolymer concentration can affect the surface morphology of the porous films. The average diameter of the pores in the porous films decreased with the polymer concentration and the molecular weight of the copolymers increased. The FESEM-EDX analysis further verified that the hydrophilic groups (Tb complex groups) were mainly distributed at the pore wall, instead of at the outer surface layer of the films, which was consistent with the LSCM results.
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 29
·期 22
·19111-19122
·
IF 2.324
Duan Haojie,He Yue,Li Shouchun,Liu Li,Xu Suyang,Li Yu,Li Haiying,Gong Yimin,Liang Qingcheng,Cheng Yali
The pure and Tb-doped In 2 O 3 beaded-porous nanotubes (BPNTs) are fabricated by simple electrospinning method. The crystal phase, morphology and chemical composition of the obtained samples were analyzed by characteristic techniques (XRD, FE-SEM, TEM, EDS, XPS, etc.). The mechanism of forming BPNTs structure was studied, and phase separation plays a key role in the process of formation. A series of sensing tests toward formaldehyde gas showed that 6 mol% Tb-doped In 2 O 3 BPNTs exhibited the best sensing performance: high response (75–50 ppm), shorter response and recovery times (2 s and 12 s), low limit of detection (LOD, 1.27–100 ppb), good selectivity and long-term stability, etc. The significantly improved gas sensing properties were mainly resulted from their high surface basicity, enriched defects (oxygen vacancies), small crystallite size and complex porous structures.
研究领域:
材料科学
·
传感器技术
·
纳米科技
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产品关联
DOI
高影响因子
MACROMOLECULES
·
2023
·
IF 5.5
Jian Lu,Yu Zhang,Jing Li,Meifang Fu,Guoxiang Zou,Shinji Ando,Yongbing Zhuang
The correlations between the molecular structures of four Tröger’s base (TB)-based polyimides (PIs) and two non-TB containing analogues and physical properties including thermal conductivity (λ) and dielectric properties both at low and high frequencies were investigated in detail. The TB-based PI films exhibited low dielectric constants (Dk = 2.25–2.80) at 10 GHz. They possessed much lower λ values (0.035–0.145 W/mK) compared to the commercial PI Kapton (0.240 W/mK). The influences of incorporating TB units into chain backbones on aggregation structures and physical properties of PIs were identified. Incorporating TB units into chain backbones effectively reduced the degree of chain orientation and increased fractional free volume, leading to both low Dk and low λ values for the resulting PI films. Also, introducing TB units enhanced molecular weights, toughness, and glass-transition temperature (Tg) of the resulting PIs. Therefore, the TB-based PIs can be promising heat-insulating and low-k dielectric materials.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2010
·
IF 2.291
Chengling Han,Tingting Chen,Lily Zu
A terbium chelate formed with diethylenetriaminepentaacetic acid and p -aminosalicylic acid (Tb–DTPA–pAS) was labeled on a 23-mer DNA strand and used as donor in the fluorescence resonance energy transfer (FRET) study of DNA hybridization. The change in donor fluorescence lifetime with and without DNA-bind acceptor carboxytetramethylrhodamine (TAMRA) showed high energy transfer efficiency (87%). The distance between the two ends of the 23-mer double-stranded DNA was estimated. This study provides a possibility of using the Tb-chelate as a probe in the studies of the geometry-dependent interaction between DNA strands or proteins.
研究领域:
化学
·
分子生物学
·
生物物理学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2018
·Vol. 54
·期 4
·3144-3155
·
IF 2.993
Qu Fei,Li Xiaonan,Lv Xiaoxia,You Jinmao,Han Wenli
Photoinduced electron transfer (PET) has been used as reporter in the field of photoluminescence sensors and switches, and intermolecular PET is believed to be responsible for fluorescence quenching. Herein, the emissions of Tb-MOF can be quenched effectively by protamine based on PET. Compared with conventional electrostatic attraction mechanism, this approach suffers less interference from other charged substances and has a broader linear range of protamine from 3 to 5000 ng/mL with limit of detection (LOD) 1.21 ng/mL. Subsequently, the strong binding effect of protamine toward Hep ascribed to electrostatic attraction hinders the interaction between Tb-MOF and protamine, resulting in the high emissions of framework. The detection of Hep also shows a good linear range from 0.5 to 5 μM with LOD 0.27 μM. Finally, this novel probe is also successfully applied to the determination of protamine and Hep in human serum with satisfactory results.
研究领域:
分析化学
·
材料科学
·
生物传感器
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产品关联
DOI
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2025
·
IF 4.6
Yifan Yao,Zuyao Fu,Xiaojun Hu,Jing Xie,Zhaoyang Ding
As dairy consumption increases, antibiotic residues in milk pose a serious threat to public health. Developing simple, rapid, and highly sensitive detection technologies is crucial for ensuring food safety. In this study, a novel fluorescent sensor, Tb/UiO-66, was synthesized by coordinating terephthalic acid ligands with terbium and zirconium ions (Tb 3 + /Zr 4+ ). This sensor enables ratiometric fluorescent detection of tetracycline (TC), exhibiting characteristic emission peaks at 394 nm, 490 nm, and 594 nm. TC quenches the emission of UiO-66 at 394 nm via the inner filter effect (IFE) and quenches the fluorescence at 490 nm through coordination with Tb 3+ . The sensor, based on the F 394 /F 490 ratio, achieves a linear range of 10–90 μg/mL and a detection limit of (LOD)0.097 μg/mL (3σ). In real milk samples, recovery rates ranged from 95.87 % to 102.44 %, with a relative standard deviation below 2.88 %. This fluorescent sensor features a simple design, rapid response, and high sensitivity, establishing a reliable platform for assessing antibiotic contamination in food safety.
研究领域:
食品安全
·
分析化学
·
传感器与生物传感器
·
环境监测
·
纳米材料
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产品关联
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2011
·Vol. 29
·期 8
·741-745
·
IF 1.086
Hongfang JIU,Guode LIU,Zhijing ZHANG,Yuehua FU,Jianchao CHEN,Tao FAN,Lixin ZHANG
A novel β-diketone, 1-(3,4,5-trisbenzyloxy)benzoyl-5-benzoyl acetylacetone (TBAA), and its corresponding binary Tb(III) complex Tb(TBAA) 3 ·2H 2 O and ternary complex Tb(TBAA) 3 Phen with 1,10-phenanthroline (Phen) were prepared. The ligand was characterized based on elemental analysis, FT-IR, and 1 H NMR. The complexes were characterized with elemental analysis, FT-IR and thermogravimetry and derivative thermogravimetry (TG-DTG). Photoluminescence measurements indicated that the energy absorbed by the organic ligand was efficiently transferred to the central Tb 3+ ions, and the complex showed intense and characteristic emissions due to the 5 D 4 → 7 F J transitions of the central Tb 3+ ions. Both complexes showed longer fluorescence lifetimes. After the introduction of the second ligand Phen group, the relative emission intensities and fluorescence lifetimes of the ternary complex Tb(TBAA) 3 Phen enhanced more obviously than that of the binary complex Tb(TBAA) 3 ·2H 2 O. This indicated that the presence of the ligand TBAA and the second ligand Phen could sensitize fluorescence intensities of Tb(III) ions, and the introduction of Phen group resulted in the enhancement of the fluorescence properties of the Tb(III) ternary rare earth complex.
研究领域:
无机化学
·
发光材料
·
配位化学
·
稀土配合物
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DOI
高影响因子
Journal of Physical Chemistry C
·
2026
·
IF 3.4
Ting Zhao,Lin Ma,Haoyang Guan,Chaofan Guo,Qian Zhang,Yuhang Huang,Weiran Chen,Taifeng Lin,Jiawen Xiao,Zheng-Guang Yan
Rare-earth (RE) doping has proven to be effective in enhancing the luminescent and optoelectronic properties of halide perovskites (HPs). However, the growth of RE-doped halide perovskite single crystals remains challenging. Herein, we successfully synthesized nine distinct MAPbBr3:RE (RE = Yb, Eu, Tb) single crystals (6–8 mm in size, RE/Pb = 0.008–0.053%) through systematic optimization of RE reagents, growth temperature, and solution concentration. Structural and optical characterization revealed RE-induced lattice expansion and band gap modulation, confirming the effective incorporation into the perovskite lattice. Furthermore, RE doping significantly improved the charge transport properties of MAPbBr3 single crystals. After doping Yb into MAPbBr3 (Yb/Pb = 0.013%), the trap density decreased from 9.2 × 109 to 2.5 × 109/cm3, carrier mobility increased from 59 to 799 cm2/(V s), and carrier lifetime increased from 199 to 2766 ns. These enhancements translated to exceptional γ-ray detection performance, with the energy resolution (ER) value for 241Am (59.5 keV) improved from 11.0% (for pristine MAPbBr3) to 6.3% (MAPbBr3:Yb) under a 5 V bias. This work not only establishes RE doping as a powerful strategy for optimizing the properties of halide perovskite semiconductors but also opens new avenues for the development of advanced radiation sensing materials.
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DOI
高影响因子
危险品化学品经营许可证（带存储）