DYES AND PIGMENTS
·
2023
·
IF 4.5
Pan Liu,Chenchen Ma,Zihan Ma,Ziyuan He,Xianjian Wang,Longhao Zhao,Xuegang Chen
The synthesis of a series of side-chain π-conjugated fluorene and terpyridine-functionalized hydrophilic poly(acrylamide) hydrogels via radical random copolymerization was reported. Based on the coordination of terpyridines and europium (III) ions, the dual-network hydrogels containing chemical covalent cross-linking bonds and metallo-supramolecular cross-linking bonds were prepared. Their structures and properties were studied systematically via NMR, IR, SEM , UV–vis absorption spectra , photoluminescence spectra and rheological. The photophysical properties showed that there was Förster energy transfer from conjugated chromophores (emission wavelength at 359–435 nm) to the europium emitter. The water content and the ratio of the energy donor and acceptor in the hydrogels make important influences on the energy transfer and then the emission color of the resulting dual-network hydrogel can be regulated from blue to red via controlling the degree of the energy transfer. Meanwhile, the dual-network hydrogels exhibited small and uniform pore structure and good mechanical properties with large storage and loss moduli .
研究领域:
材料科学
·
化学
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Fangfang Chen,Jiaming Wang,Wei Xu,Zhuangzhuang Ren,Guan Peng,Tao Huang,Fei Zhao
In this work, europium (III) complexes were synthesized by using different o-hydroxy-benzophenone ligands, namely 2-hydroxy-4-octyloxybenzophenone (HL 1 ), 4-allyloxy-2-hydroxybenzophenone (HL 2 ) and 2-hydroxy-4-methoxybenzophenone (HL 3 ). The structures and optical properties of the Eu III complexes E1, E2 and E3 were characterized by elemental analysis, infrared/fluorescence spectroscopy and mass spectrometry. The aggregation-induced emission properties from E1, E2 and E3 were systematically investigated in the acetone/water binary mixtures. At the same time, the corresponding agglomeration behavior and self-assembly structures in the Eu III complex system was confirmed through scanning electron microscopy. Excellent luminescent performance was illustrated in sample of E1 (the luminescence quantum yield of 21.36 % in solid state) which should be attributed to the aggregation-induced emission from better self-assembly behavior with longer carbon chain in ligand. The results of ultraviolet aging resistance from E1 reveal that the self-assembly behavior could not only improve the aggregation-induced emission performance, but also enhance the photostability of Eu III complex compared with the traditional β-diketone Eu III complex. This discovery may provide a facile strategy to design and prepare more promising rare earth complexes with good luminescence properties and strong photostability for application in solid state.
研究领域:
材料科学
·
化学
·
光学
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高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Rongfang Yan,Ning Zhang,Weihua Liu,Xuelian Hu,Wenxiu Wang,Yiwei Tang,Shuo Wang,Xianghong Wang,Qinghai Sheng
Self-assembled Eu-dipeptide (tryptophan-phenylalanine) microparticles with multi-emission fluorescence was prepared and modified with a single-stranded DNA corresponding to the sulfamethazine (SMZ) adapter (Eu-PMPs@cDNA). Aptamer-functionalized magnetic Fe 3 O 4 (MNPs@aptamer) was used to specifically bind the target SMZ. Using Eu-PMPs@cDNA as fluorescent signal probe and MNPs@aptamer as catcher, a noncompetitive fluorescence sensing strategy was developed for determination of SMZ with good sensitivity, accuracy, selectivity, and stability. Under the optimized conditions, fluorescence increases linearly in the 0–20 ng/mL SMZ concentration range, and the detection limit is 0.014 ng/mL. The fluorescence sensing method was applied to analysis of water and fish muscle samples, and recoveries ranged from 81.78 to 119.46 % with relative standard deviations below 4.2 %. This study offered a reliable and sensitive fluorescence sensing strategy for SMZ determination in food samples, which owns great potential for wide-ranging application in harmful compounds assay by simply changing the type of aptamer and its complementary single-stranded DNA.
研究领域:
分析化学
·
食品科学
·
生物医学工程
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DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2026
·
IF 5.5
Yangli Chen,Delin Sun,Hailong Zhu,Yaqi Hou,Huaiyang Zuo,Shumin Zheng,Jing Wang,Shiming Yang,Bao Wang
Garnet-type Li7La3Zr2O12 (LLZO) stands out as one of the most promising ceramic materials for solid-state lithium-ion batteries (LIBs), owing to its high ionic conductivity and electrochemical stability. However, critical challenges such as high interfacial resistance and poor cycling performance, particularly at subzero temperatures, have hindered its widespread application. Herein, we propose a composite solid electrolyte design by dispersing Eu-doped Li7+xLa3Zr2-xEuxO12 as an inorganic filler into a gel polymer matrix based on poly-1,3-dioxolane. This inorganic-polymer hybrid structure significantly enhances the low-temperature performance of LIBs. The incorporation of the gel polymer not only improves the interfacial contact between LLZO and the electrodes but also provides multiple pathways for lithium-ion transport, leading to enhanced ionic conductivity with the value of 5.6 × 10–4 S cm–1 at 20 °C and 9.34 × 10–5 S cm–1 at −20 °C. Electrochemical evaluations demonstrate that the LLZEO/PDL composite electrolyte exhibits remarkable performance at −20 °C: Li|Li symmetric cells achieve stable cycling for over 2000 h at 0.1 mA cm–2, and Li|LiFePO4 full cells deliver a high reversible capacity of 71.8 mAh g–1 at 0.1C, with a capacity retention of 68.8% after 300 cycles.
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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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高影响因子
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
Journal of Energy Storage
·
2026
·
IF 10.7
Jie Hu,Jiangyu Wu,HongMin Chen,Xiaoqin Du,Jingxia Chen,Hong Li,Yu Deng,Jianghua Wu
In this study, the electrochemical performance of cobalt oxide was significantly enhanced through europium (Eu) doping. Nanoneedle-shaped Eu-doped Co 3 O 4 (ECO) was synthesized via a solvothermal method followed by annealing. ECO exhibited a specific capacitance of 1496 F g −1 at a current density of 1 A g −1 , which is superior to that of pristine Co 3 O 4 . Aberration-corrected scanning transmission electron microscopy (AC-STEM) confirmed the successful incorporation of Eu into the crystal lattice. Density functional theory (DFT) calculations revealed that Eu doping narrowed the bandgap, thereby improving electrical conductivity and reaction kinetics. The resultant asymmetric supercapacitor device achieved an energy density of 47.5 Wh k g −1 at a power density of 750 W k g −1 , while maintaining 91.2% of its initial capacitance after 10,000 cycles. This work highlights the potential of ECO as a high-performance electrode material for supercapacitors.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Jingxian He,Zhen Jiang,Yuan Liu,Zhenfeng Jing,Shuhui Sun,Haixia Zhang,Fengqing Zhang
This study successfully synthesized bismuth ferrite (BFO) thin films co-doped with europium (Eu) and aluminum (Al) using the sol-gel method, while comprehensively investigating their performance characteristics. By systematically adjusting the Al doping ratio in Bi 0.98 Eu 0.02 Fe1 -x Al x O 3 (with x = 0, 0.01, 0.03, 0.05, 0.07), significant changes in the material properties were observed. XRD and Raman spectroscopy validated the presence of R 3 c and Pnma phases in the synthesized BFO thin films, which demonstrated excellent crystallinity. Microstructural and compositional assessments, performed using SEM and XPS, indicated that the BEFAO5 sample possessed high crystallinity and a relatively low oxygen vacancy content. These characteristics enhanced the exceptional current-voltage (J-V) properties and ferroelectric behavior of BEFAO5. Additionally, the influence of vacancy defects on the ferroelectric efficiency and durability of BFO ferrite thin films was examined. The results indicated that the co-doping approach significantly improved the material's resistance to aging. In summary, the combined doping of Eu and Al not only substantially modified the crystalline structure and physical attributes of BFO thin films but also markedly enhanced their potential for applications in energy storage and spintronic technologies.
研究领域:
材料科学
·
物理学
·
电子工程
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高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2025
·Vol. 39
·期 9
·e70374
·
IF 0
Quanfeng Ye,Lingyi Li,Jie Zhang,Mingyu Teng,Fengshou Wu,Deman Han
Salen-type Schiff-base ligands (H 2 L) were synthesized through the condensation reaction between 1,2-diphenylethane-1,2-diamine and o-vanillin. Three novel luminescent Zn-Ln complexes, [ZnL] 2 Ln (Ln = Gd, Tb, Eu), were successfully prepared by reacting the zinc complex (ZnL) with LnCl 3 . Subsequent treatment of [ZnL] 2 Ln with dibenzoylmethane yielded three dinuclear derivatives, β-[ZnL]Ln (Ln = Gd, Tb, Eu). All complexes were comprehensively characterized by single-crystal X-ray diffraction and FT-IR spectroscopy. Structural analyses revealed that complexes 1–3 adopt trinuclear Zn-Ln-Zn architectures, whereas complexes 4–6 exhibit dinuclear Zn-Ln configurations. Solid-state photoluminescence measurements demonstrated quantum yields of 27.94% (ZnL), 0.90% ([ZnL] 2 Eu), 1.82% ([ZnL] 2 Tb), 1.05% ([ZnL] 2 Gd), 0.65% (β-[ZnL]Eu), 1.16% (β-[ZnL]Tb), and 0.70% (β-[ZnL]Gd), indicating their potential as advanced fluorescent rare-earth materials. The LED devices based on complexes β-[ZnL]Eu and β-[ZnL]Tb exhibit stronger emission intensities compared to those based on complexes [ZnL] 2 Eu and [ZnL] 2 Tb. The obtained complexes were fabricated in LED; the CIE chromaticity coordinates of complexes β-[ZnL]Eu and β-[ZnL]Tb are (0.344, 0.316) and (0.347, 0.323), respectively, which are very close to the standard white light coordinates (0.33, 0.33).
研究领域:
无机化学
·
材料科学
·
配位化学
·
光学材料
·
固态照明
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DOI
Analytical Methods
·
2026
·
IF 2.6
Bingyu Fu,Yanru Shao,Zhixiong Zheng,Shengxin Wen,Yingli Guo,Qi Xu,Hualin Yang
In this study, a simple and sensitive dual-mode biosensor was designed based on the color of 2,6-dichloroindiphenol (DCIP) and the fluorescence of calcein. The target alkaline phosphatase (ALP) can catalyze the dephosphorylation of L-ascorbic acid-2-phosphate (AAP) to form ascorbic acid (AA) and phosphate ions. The reducing properties of AA can reduce the DCIP from blue to colorless. Meanwhile, phosphate ions can chelate with europium ions (Eu 3+ ) to restore the fluorescence of Eu 3+ -Calcein. In colorimetric mode, the linear detection range for ALP was 1.56-50 U/L with a limit of detection (LOD) of 0.27 U/L. In fluorescence mode, the linear detection range was 0.78-25 U/L and LOD was 0.23 U/L. Besides, the selectivity of this dual-mode for ALP was very excellent and the recovery rates in serum samples were also satisfactory.
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DOI
PubMed
高影响因子
Journal of Energy Storage
·
2026
·
IF 9.8
Yong Tang,Jianwei Zhao,Yi Li,Yujing Wang,Guangqiu Zhang,Yihang Zhao,Lirong Qin
In this study, we successfully synthesized europium (Eu)-doped V 2 O 5 nanosheets grown on carbon cloth via a hydrothermal method for use as a high-performance aqueous zinc ion batteries (AZIBs) cathode. The incorporation of Eu not only facilitates electrolyte diffusion but also mitigates electrode volume expansion during cycling, thereby significantly enhancing electrochemical stability. Remarkably, the optimized material demonstrates outstanding electrochemical properties, delivering a high specific capacity of 460 mAh/g at 1 A/g. Moreover, it exhibits excellent cycling stability, retaining 78 % of its initial capacitance after 5000 cycles at a high current density of 10 A/g, along with a low charge transfer resistance of 132 Ω. Furthermore, Eu doping substantially improves the Zn 2+ ion diffusion coefficient, elevating it to the order of 10 −8 cm 2 /s. And with the increase of temperature, the specific capacity of the battery continues to increase until 70 °C, when the maximum value is reached, and the specific capacitance increases by 15 %. These compelling results highlight the great potential of Eu-doped V 2 O 5 as an advanced energy storage material.
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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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DOI
高影响因子
危险品化学品经营许可证（带存储）