MOLECULES
·
2024
·Vol. 29
·期 17
·4259
·
IF 4.2
Jing Li,Yu Liang,Chun Tian,Hongyan Zou,Lei Zhan,Lijuan Wang,Chengzhi Huang,Chunmei Li
Bacillus anthracisis a Gram-positive bacterium that can cause acute infection and anthracnose, which is a serious concern for human health. DeterminingBacillus anthracisthrough its spore biomarker dipicolinic acid (DPA) is crucial, and there is a strong need for a method that is rapid, sensitive, and selective. Here, we created Eu(III)-coordination polymers (Eu-CPs) with surfaces that have abundant carboxyl and hydroxyl groups. This was achieved by using citric acid and europium nitrate hexahydrate as precursors in a straightforward one-pot hydrothermal process. These Eu-CPs were then successfully utilized for highly sensitive DPA determination. The fluorescence (FL) emission of Eu-CPs, which is typically weak due to the coordination of Eu(III) with water molecules, was significantly enhanced in the presence of DPA. This enhancement is attributed to the competitive binding between DPA’s carboxyl or hydroxyl groups and water molecules. As a result, the absorbed energy of DPA, when excited by 280 nm ultraviolet light, is transferred to Eu-CPs through an antenna effect. This leads to the emission of the characteristic red fluorescence of Eu3+at 618 nm. A strong linear relationship was observed between the enhanced FL intensity and DPA concentration in the range of 0.5–80 μM. This relationship allowed for a limit of detection (LOD) of 15.23 nM. Furthermore, the Eu-CPs we constructed can effectively monitor the release of DPA from Bacillus subtilis spores, thereby further demonstrating the potential significance of this strategy in the monitoring and management of anthrax risk. This highlights the novelty of this approach in practical applications, provides a valuable determination technique for Bacillus anthracis, and offers insights into the development cycle of microorganisms.
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yi-Li Peng,Qiang-Qiang Zhu,Hao-Liang Cheng,Shuang-Qiang Fang,Yue Zhai,Le Wang
Mechanoluminescent (ML) materials hold significant potential for applications in visual stress and temperature sensing. However, most studied ML materials are largely limited to trap-controlled types, which necessitate prior optical excitation for activation and require continuous optical stimulation to maintain luminescent intensity. This dependency significantly restricts their performance in practical applications. In this study, we developed self-recoverable CGO:Eu³⁺ red-emitting ML powders and combined them with green-emitting ZnS:Cu ML powders in polydimethylsiloxane (PDMS) to facilitate visualized stress and temperature sensing. The ML intensity of CGO:Eu³⁺ and ZnS:Cu demonstrates distinct trends at varying strains; thus, the CGO:Eu³⁺-ZnS:Cu composite elastomer with a CGO:Eu³⁺ to ZnS:Cu ratio (CtZ ratio) of 4:1 exhibits the most significant ML color change in response to strain variations. Additionally, the notable difference in thermal quenching performance between CGO:Eu³⁺ and ZnS:Cu powders enables the composite elastomer with a CtZ ratio of 2:1 to differentiate temperature based on changes in ML color, achieving a maximum relative sensitivity ( S r) of 2.2 % K⁻¹ at 200 °C. The composite elastomers produced exhibited ML color changes that are easily perceptible to the human eye in response to varying stress and temperature conditions, thereby making them suitable for applications in intelligent gesture recognition and temperature detection.
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高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Zhen-Wen Zhang,Ao-Jun Qiu,Geng-Jin-Sheng Cheng,Yu Fan,Yu Xiao,Yan-Zhu Liu,Qian-Yong Cao
Tetracycline detection remains an important research topic in the bioenvironmental field today. This paper reports a novel amphiphilic Eu(III) complex DO 3 AC 12 -Eu for single signal and ratiometric fluorescence detection of tetracycline (TC) in aqueous solution. DO 3 AC 12 -Eu can self-assemble micelle-like nano-aggregation in aqueous solution with no fluorescence. After addition of TC, the Eu(III)-based emission was observed for the effective antenna effect from TC to Eu(III) center. In addition, DO 3 AC 12 -Eu can load 4-methylumbelliferone sodium (MU) as a fluorescence reference to form DO 3 AC 12 -Eu/MU co-assembly nano-aggregation with a blue emission at 450 nm. Based on the TC-induced antenna effect and inner filter effect mechanism between TC and MU, DO 3 AC 12 -Eu/MU exhibits a ratiometrically fluorescent response toward TC, with increasing Eu(III)-based emission at 615 nm, and decreasing MU-based emission at 450 nm. Importantly, DO 3 AC 12 -Eu/MU exhibits superior sensitivity and selectivity over DO 3 AC 12 -Eu . The detection limit of DO 3 AC 12 -Eu/MU toward TC is 0.82 nM, far lower than that of DO 3 AC 12 -Eu (9.5 nM). Furthermore, DO 3 AC 12 -Eu/MU assembly has been successfully used for on-site and real-time detection of TC in food samples by using the smartphone-based visualization method and test gel.
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高影响因子
MAIN GROUP CHEMISTRY
·
2020
·Vol. 19
·期 2
·117-124
·
IF 0.845
Zhao Xue-Yan,Shi Yan-Shu,Pang Mao-Lin,Zhang Wei-Na,Li Yun-Hui
The controllable synthesis of MOF materials is of great significance for its application. At present, the regulation of MOF morphology is mainly limited to those composed of transition metal elements, such as IRMOF, ZIF-8, HKUST-1, UiO-66, and MIL-MOFs etc, and few reports about the fabrication of micro/nano sized lanthanide MOFs could be found in literature. In this paper, micron sized Eu-1,4-NDC-fcu-MOF octahedral particles were obtained via a modified solvothermal method by using methylamine as a modulator. The luminous efficiency of Eu3+ was greatly improved due to the efficient energy transfer from the 1,4-NDC ligand to rare earth ion. The resultant Eu-1,4-NDC-fcu-MOFs particles could be used to detect benzidine in ethanol solution effectively, and as the concentration of benzidine increased, the fluorescence intensity of Eu-1,4-NDC-fcu-MOFs gradually decreased. Due to the good stability, high luminescent intensity and excellent sensitivity, this work further demonstrates that Ln-MOF are ideal fluorescent probes to identify specific molecules.
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高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2019
·Vol. 166
·期 15
·D882
·
IF 3.12
Da-Wei Yang,Ke-Ke Chang,Xiao-Fei Hu,Ya-Lan Liu,Tai-Qi Yin,Shi-Lin Jiang,Mei Li,Wei Han,Zhi-Fang Chai,Wei-Qun Shi
The objective of this work is to explore the electrochemical and electrodeposition behaviors of Eu (III) cation at the liquid binary Al-Ga alloy cathode. In addition, the co-reduction behaviors of Eu (III), Al (III) and Ga (III) were also systematically studied on a W electrode. The results indicated that Eu (III) can be reduced on the binary Al-Ga alloy cathode, and Eu (III), Al (III) and Ga (III) also can be co-reduced on the W electrode to form Al-Eu/Ga-Eu intermetallic compounds. At the same time, the isothermal section phase diagram of the Al-Ga-Eu ternary system at 773 K was also calculated. In addition, Al-Eu and Ga-Eu alloys were prepared by potentiostatic and galvanostatic electrolyses in the LiCl-KCl-EuCl3 melt. Finally, the electrodeposition products were characterized by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) coupled with Energy Dispersive Spectroscopy (EDS).
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Jing Yang,Meng Chen,Peng Li,Fei Cheng,Yang Xu,Zhiqiang Li,Yige Wang,Huanrong Li
The integration of self-healing ability into luminescent switches have attracted increasing interest in designing smart optical devices. In this paper, an acid-base vapor modulated luminescent switch of hydrogels based on Eu-containing polyoxometalate (EuPOM) and poly(2-acrylamido-2-methyl-1-propanesulfonicacid) (PAMPSA) was readily prepared, which can self-heal within only about few minutes under ambient atmosphere. Besides, the hydrogels can easily be shaped into any desired form by pouring into molds. These remarkable features enable the resulting hydrogel as a promising “smart” material with use in smart devices, sensors, etc.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Zhengting Zhang,Guiyun Yi,Peng Li,Xikui Wang,Xiaodong Wang,Chuanxiang Zhang,Yulong Zhang,Qi Sun
Herein, a novel europium/graphene oxide/lead oxide (Eu/GO/PbO 2 ) composite based anode with excellent electrocatalytic performance towards degradation of hydroquinone was prepared by a facile co-electrodeposition method. The composition and micromorphology of the anode was investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) and the results confirmed that europium (Eu) and graphene oxide (GO) were successfully composited with PbO 2 and a more compact structure was obtained, which was conductive to enhancing the corrosion resistance of the electrode. Besides, electrochemical measurements indicated that Eu/GO/PbO 2 electrode possessed longer service lifetime (87 h), higher oxygen evolution potential (2.64 V), and lower charge transfer resistance (41.08 Ω) than GO/PbO 2 and pure PbO 2 electrode. The promoted electrocatalytic activity of Eu/GO/PbO 2 electrode was ascribed to its stronger hydroxyl radical generation ability, more active sites and lower electron transfer resistance. Additionally, effects of initial hydroquinone concentration, applied current density and initial pH value on the degradation performance of Eu/GO/PbO 2 anode were systematically investigated. The behind degradation mechanism of hydroquinone by Eu/GO/PbO 2 anode was speculated on the basis of the major intermediates identified by high performance liquid chromatography-mass spectrometer (HPLC-MS). Under the continuous attack of free hydroxyl radicals, hydroquinone was finally decontaminated into CO 2 and H 2 O. The present work demonstrated that Eu/GO/PbO 2 composite anode exhibited excellent degradation performance towards hydroquinone.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 6
·2258-2272
·
IF 3.5
Luo Hanqiong,Hu Quanli,Yue Bin,Du Suxuan
Rare earth orthocobaltates nanofibers (PrCoO 3 , EuCoO 3 , and GdCoO 3 ) were prepared by a simple electrospinning method coupled with calcination. The PrCoO 3 , EuCoO 3 , and GdCoO 3 nanofibers have orthorhombic perovskite structure. The fabricated electrodes presented the typical pseudocapacitive characteristics, which originated from the reversible redox reactions of Co 2+ /Co 3+ and Fe(CN) 6 3− /Fe(CN) 6 4− . At 1 A g −1 , the specific capacitances of the PrCoO 3 , EuCoO 3 , and GdCoO 3 nanofibers were 119, 133, and 196 F g −1 , respectively. The electrochemical characteristics of the PrCoO 3 , EuCoO 3 , and GdCoO 3 nanofibers exhibited favorable specific capacitance, good long-term cycling stability, and high coulombic efficiency, proving the possible application into energy storage devices. PrCoO 3 and EuCoO 3 nanofibers exhibited a magnetic state transition from paramagnetic to antiferromagnetic state. GdCoO 3 nanofibers showed a paramagnetic ordering at high temperature. The cooperation of the R 3+ ions and the Co 2+ ions contributed to the magnetism of rare earth orthocobaltates nanofibers. The antiferromagnetic behaviors of the fabricated samples confirm the potential application into spin-electronic devices.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Yu Kang,Ludi Wang,Yaoyang Liu,Runquan Shi,Xiaoyan Tang,Li Wang
Efficient and selective sensing of lanthanides are crucial for identifying valuable lanthanide streams and designing effective extraction/masking agents for mining and nuclear waste management. Luminescence-based sensing often struggles with interference from water molecules. Common approaches to improve emissive lanthanide complexes in water involve increasing ligand lipophilicity and enclosing the emitting metal center. Herein, we have demonstrated that lipophilic ligands do not always lead to higher emissions. When strong coordinating groups are involved in the ligand, the complex may adapt special architecture to compensate the hydrophilic nature of the ligand by creating lipophilic microenvironment and lead to higher emissions. Our findings highlight the importance of the overall lipophilicity of both the ligand and the final complex, which could serve as important reference for future design of efficient lanthanide sensing and emissive complexes.
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高影响因子
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
·
2019
·Vol. 23
·期 06
·619-627
·
IF 1.292
Pan Chen,Ya-Fan Huang,Guang-Yu Xu,Jin-Ping Xue,Juan-Juan Chen
To improve the cancer targeting and anticancer efficacy, the multifunctional Eu-based metal-organic framework (EuBTC) is post-synthetically modified with a targeting moiety folic acid and a zinc phthalocyanine photosensitizer. In addition, this nanosphere is also applied as a drug delivery system to load the chemical drug doxorubicin. Electron microscopy, powder X-ray diffraction and infrared spectometry demonstrated the formation of these multifunctional nanospheres (DOX). Our nanospheres kept the high singlet oxygen quantum yield of zinc phthalocyanine. Additionally, Cell viability experiments demonstrated the biosafety of EuBTC and the enhanced anticancer effect of DOX@FA-EuBTC-Pc under light irradiation. In short, these well-arranged DOX@FA-Eu-BTC-Pcs exhibit as promising drug delivery systems for enhanced targeted anticancer therapy.
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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
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
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