CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Chaochao Tao,Songsong Ding,Shengqian Wang,Lin Liu,Houfa Mao,Genyuan Chen,Hualan Xu,Chongfeng Guo,Shengliang Zhong
Multicolor emission has long been a critical scientific challenge in the field of persistent luminescence (PersL) materials, with the achievement of multicolor PersL emission within a single host matrix representing a primary research objective. Herein, a new and effective method of using coordination polymers (CPs) as precursors is designed to synthesize multicolored CdSiO 3 :RE 3+ (RE = Pr, Sm, Eu, Tb, Tm) PersL materials. Through variation of rare earth dopants, we successfully achieved color-tunable PersL emission spanning brown, pink, purple, red, green, and blue spectra. The influence of RE 3+ dopants on the crystal structure, morphology and optical properties are studied in detail. Notably, this straightforward synthesis strategy enabled the effective production of nanospherical particles exhibiting regular morphology and uniform size distribution. The electronic band structure of the material was theoretically analyzed using density functional theory (DFT) calculations. Combined with thermoluminescence (TL) measurements were performed to elucidate the underlying PersL mechanism. To demonstrate practical applications, we designed a dynamic anti-counterfeiting pattern and evaluated the potential utility of CdSiO 3 :RE 3+ materials. This study not only enhances our fundamental understanding of CdSiO 3 -based PersL materials, but also provides novel insights into morphology and size control strategies that could be extended to other PersL material systems.
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高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2020
·Vol. 22
·期 39
·22746-22757
·
IF 3.43
Wenting Wei,Jiaxuan Li,Huiqin Yao,Keren Shi,Hongyun Liu
Herein, a new type of lanthanide coordination polymer film made up of europium (Eu(III)) and poly(N-methacryloylglycine) (Eu(III)–PMAG) was prepared on an ITO electrode surface driven by the coordination between N-methacryloylglycine (MAG) and Eu(III) through a single-step polymerization process. The fluorescence signal of Eu(III)–PMAG films at 617 nm originating from Eu(III) could be well retained in the buffer solution but was regulated by the concentration of Cu(II) and the complexing agent EDTA. The switching of fluorescence by Cu(II) was attributed to the inhibition of the “antenna effect” between Eu(III) and the MAG ligand in the films. The coexistence of reduced β-nicotinamide adenine dinucleotide (NADH) in the solution can apparently quench the fluorescence of Eu(III)–PMAG films through the internal filtration effect of UV absorbance overlapping the excitation wavelength, but itself exhibiting a fluorescence emission at 468 nm. In addition, the electrocatalytic oxidation of NADH with the help of the ferrocenedicarboxylic acid (FcDA) probe demonstrated a cyclic voltammetry (CV) signal at 0.45 V (vs. SCE). Based on various reversible stimulus-responsive behaviours, a 4-input/10-output logic network was built using Cu(II), EDTA, NADH and FcDA as inputs and the signals of fluorescence from Eu(III)–PMAG (617 nm) and NADH (468 nm), the CV response from FcDA and the UV-vis absorbance from the Cu(II)–EDTA complex as outputs. Meanwhile, 6 different functional logic devices were constructed based on the same versatile platform, including a 2-to-1 encoder, a 1-to-2 decoder, a 1-to-2 demultiplexer, a parity checker, a transfer gate and a reprogrammable 3-input/2-output keypad lock. Combined with the new type of lanthanide coordination polymer film, NADH played central roles in designing sophisticated computing systems with its fluorescence, UV and electrocatalytic properties. This work might provide a novel avenue to develop intelligent multi-analyte sensing and information processing at the molecular level based on one single platform.
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高影响因子
RSC Advances
·
2016
·Vol. 6
·期 12
·9612-9618
·
IF 3.289
Ming Chen,Jia-Hong Wang,Zhi-Jun Luo,Zi-Qiang Cheng,Ya-Fang Zhang,Xue-Feng Yu,Li Zhou,Qu-Quan Wang
Metal/rare-earth core/shell hetero-nanostructures combine the optical properties of metal cores and rare-earth shells, which are widely reported and expected to be used in multitask applications. However, there is still no facile and efficient strategy to directly prepare such materials. Herein, we present a facile hydrothermal method for directly coating rare-earth vanadate shells onto the Au nanoparticle (AuNP) cores. Citrate plays a fascinating and critical role in the whole synthesis process, and not only acts as the capping agent to stabilize the as-prepared AuNP cores and the final products but also serves as the complexing agent to assist the nucleation and growth of rare-earth vanadate shells. Interestingly, the grown Au/GdVO4:Eu core/shell NPs have a flower-like shape with tunable plasmon resonance and bright fluorescence. The morphology and crystallinity as well as the growth mechanism and tunable optical properties of the Au/GdVO4:Eu are investigated. The method developed here could be extended for preparing other metal/rare-earth hybrids and the multifunctional products with specific morphology have the potential in the photocatalytic and biomedical application.
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MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 7
·1-11
·
IF 6.232
Guo Hao,Wu Ning,Xue Rui,Liu Hui,Wang Mingyue,Yao Wenqin,Wang Xiaoqiong,Yang Wu
An Eu(III)-functionalized strontium-organic framework (Eu 3+ @Sr-MOF) was synthesized by encapsulating Eu 3+ ions into the pores of Sr-MOF via postsynthetic modification (PSM) and fully characterized by XRD, SEM, EDS, FTIR, and TGA. The luminescent properties of Eu 3+ @Sr-MOF were measured and investigated in detail, which demonstrated that Eu 3+ @Sr-MOF not only possessed excellent water and chemical stabilities in a wide pH range (5–10) but also displayed red luminescence with excitation/emission maxima at 332/617 nm. The Eu 3+ @Sr-MOF can be considered as a highly selective and sensitive recyclable luminescence probe for sensing Cr(III) and Cr(VI) based on strong luminescence quenching effects; it can be recycled at least five times. The luminescence probe for Cr 3+ , CrO 4 2− , and Cr 2 O 7 2− shows low detection limits (0.15 μM, 0.17 μM, and 0.13 μM, respectively), relatively broad linear ranges (0.6–150 μM, 0.1–200 μM and 0.4–180 μM, respectively), and high quenching constants K SV . The signals can be observed by the naked eye under UV light of 365 nm. The method was applied to the determination of total Cr in environmental water samples.
Graphical abstract
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Yingchun Gao,Yanmei Chen,Zhiyuan Li,Qi Lu,Yunyun Chen,Yangyang Jiang,Xiaoya Fang,Lei Song,Xiaoxia Mao
Antibiotic contamination is increasing and poses a major threat to the ecosystem. The development of effective and low-cost methods for the in-situ detection of ciprofloxacin (CIP) in environmental samples has become an important research hotspot. Here, we develop a smartphone-compatible visualization kit oriented for CIP detection based on metal–organic frameworks Eu-MOFs@hydrogel composites,which exhibits efficient and specific recognition of CIP and results in a change in fluorescence color from red to light blue. Besides, the concentration of CIP can be determined by RGB analysis on a smartphone with a wide linear range (0.002–50 μM) and a low detection limit (0.00137 μM). The assay kit also possesses good environmental adaptability and stability, showing excellent selectivity and anti-interference ability for 11 common veterinary drugs. Additionally, the recoveries of the sensing probe in chicken and duck manure samples ranged from 70.66 % to 112.2 % with the relative standard deviations (RSDs) within 1.88 %-5.53 %. These results indicate that the developed hydrogel portable smart detection kit has great potential for practical field testing of CIP.
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CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
L. Yue,X.Z. Zheng,P.J. Xia,C. Wang,Y.F. Lei,M. Xu,W.B. Dai
Rare-earth (RE) and/or transition metal (TM) ions (co)doped phosphors have garnered much attention for promoting development in the fields of solid state lighting (SSL) and displays. It is a meaningful work to design high-quality phosphor via intelligent assembling from wide variety of compounds with RE/TM ions. Herein, the lanthanum borophosphate La 7 O 6 (BO 3 )(PO 4 ) 2 (LOBP) and Bi/Eu were selected as host and dopants for constructing the phosphor LOBP: Bi/Eu via solid phase synthetic method due to simple synthesis, chemical/thermal stability, rich cationic sites, appropriate bandgap, and controllable optical tuning from synergistic effect of cyan (Bi) and red (Eu) emissions, respectively. The structure and site occupations were analysed via XRD and Rietveld refinements , showing Bi 3+ ions were only resided in La 3+ sites within the monoclinic matrix (P2 1 /n) and appeared greater inclination towards the La sites with coordinate number ( CN ) = 8 as compared with CN = 7 due to the closer ion radius ratio. While Eu 3+ ions entered into the two distinct La sites with almost the same probability. The morphology and elemental mapping were obtained via SEM/EDS, exhibiting irregular particle shape with micron-level size, and the chemical composition met expectation. Through energy transfer (ET) from Bi to Eu under n -UV excitation, the adjustable photoluminescence (PL) from cyan traversing white and finally to red could be achieved. The concentration quenching for both singly- (Bi) and co-doped (Bi/Eu) phosphors were charged by the d-d interactions. Finally, the stable as-fabricated n -UV pumped w LED via coupling the composition-optimized white-emitting LOBP: 2%Bi, 7%Eu to a commercial 305 nm n -UV LED chip shows splendid performances.
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Advanced Optical Materials
·
2024
·
IF 8
Shanshan Zhao,Dechao Yu,Benchun Li,Saima Kanwal,Tiantian Shen,Jincheng Wu,Songlin Zhuang,Dawei Zhang
The development of blue/green/red tricolor upconversion (UC) phosphors under invisible light irradiation has attracted significant interest in emerging applications such as anti-counterfeiting, three-dimensional (3D) optical data storage, and solid-state 3D displays. In this study, a series of LiYO 2 :RE 3+ ,Yb 3+ (RE = Tm, Ho, Eu) phosphors are successfully prepared via first precipitation process followed by calcination, and completely optimized for efficient tricolor UC luminescence with 980 nm laser excitation. Mechanisms involving two- or three-photon absorption processes and low-phonon-energy-suppressed multi-phonon relaxation have been proposed for Ho 3+ (Eu 3+ )/Yb 3+ and Tm 3+ /Yb 3+ codoping, respectively. In addition, the RE 3+ (Yb 3+ ) concentration-induced phase transition of the LiYO 2 host is discussed for interesting possibilities in spectral regulation. Based on the broad color gamut achieved by the tricolor UC phosphor mixture, homochromatic and polychromatic metamerisms are experimentally fabricated via screen printing for high-level anti-counterfeiting and information security. Moreover, for a proof-of-concept demonstration, prototypes of 3D optical data storage and volumetric displays are constructed by embedding tricolor UC mixtures and their 3D printed patterns in polydimethylsiloxane. It is believed that the continuous exploration of tricolor UC under invisible light excitation for metamerism anti-counterfeiting and 3D displays can promote the development of high-level information security and advanced volumetric display technologies.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Mingsha Jie,Amei Zhu,Jiaxin He,Bingxue Liu,Xiaoyue Yue,Zeyu Xu,Yanhong Bai
The excessive use of tetracyclines (TCs) poses a significant threat to human health, necessitating the development of convenient, rapid, and intelligent detection methods for monitoring TCs residues in food products. In this work, we present a heterogeneous-structured Eu/Ce-MOFs ratiometric fluorescence sensor. This sensor demonstrates excellent stability and high accuracy for TCs detection, with detection limits of 73.0 nmol/L for tetracycline (TC), 51.7 nmol/L for oxytetracycline (OTC), and 54.9 nmol/L for doxycycline hydrochloride (DOX). The Eu/Ce-MOFs ratiometric fluorescence sensor successfully quantified to TC, OTC, and DOX in pork and milk samples and achieved satisfactory recoveries ranging from 89.3% to 112.9%. Furthermore, a hydrogel-based visual sensing platform integrated with machine learning algorithms has been developed, significantly enhancing the detection accuracy of TC, OTC, and DOX. By combining smartphone imaging with machine learning algorithms, this visual sensing platform provides a dependable approach for TCs analysis.
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高影响因子
IONICS
·
2025
·
IF 2.6
Sun Yuning,Chen Shenyu,Li You,Lv Jinjian,Sun Heng
Aqueous zinc-ion batteries (AZIBs) have emerged as a research focus in large-scale energy storage due to their advantages of high safety, low cost, and abundant zinc resources. However, manganese dioxide (MnO₂) cathode materials suffer from poor cycle stability and insufficient rate capability, limiting their practical applications. Herein, β-MnO₂ cathode materials with different Eu doping contents were prepared via a microwave hydrothermal method. Pure-phase β-MnO₂ exhibited a slender nanorod-like structure but suffered from agglomeration, delivering a specific capacity of only 142 mAh g⁻ 1 at 0.1 A g⁻ 1 . In contrast, Eu-doped MnO₂ materials formed a tunnel structure with a larger lattice constant, along with more uniformly distributed nanorods and reduced agglomeration. Electrochemical tests revealed that the Eu-doped MnO₂ cathode achieved a specific capacity of 425 mAh g⁻ 1 at 0.1 A g⁻ 1 (three times that of pure β-MnO₂). After 1000 cycles at 1 A g⁻ 1 , it retained 59.4% of its initial capacity, significantly outperforming the pure phase (44.7%). Kinetic analysis indicated that Eu doping enhanced the surface pseudocapacitive effect, shifted the reaction mechanism toward diffusion-capacitance mixed control, and improved reversibility and active site utilization efficiency remarkably.
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高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 9
·628
·
IF 5.4
Li Fuping,Li Baoyu,Li Rong,Men Xue,Gao Lian-Xun,Wu Chengxin,Yang Wenrong,Pang Pengfei,Zhang Yanli
A fluorescent switch nanoprobe based on boric acid-functionalized europium-based metal–organic framework (BA-Eu-MOF) integrated with a visual analysis platform assisted by smartphone was established for the sensitive detection of Hg 2+ and glutathione (GSH). The probe was fabricated with 5-boronoisophthalic acid as ligand and europium ions as metal node, which enables specific recognition of Hg 2+ through a transmetalation mechanism. Upon the introduction of Hg 2+ , the red fluorescence of the probe was quenched (“off” state). When GSH is added, because its thiol groups have a stronger binding affinity for Hg 2+ , it competitively extracts Hg 2+ from the BA-Eu-MOF/Hg 2+ complex, leading to fluorescence recovery (“on” state). Based on this “on-off-on” mode, the quantitative detection of Hg 2+ and GSH was achieved with detection limits of 0.67 nM and 0.087 µM. Furthermore, the intelligent sensing platform for quantitative detection of analytes was developed by utilizing a smartphone Color Grab App with detection limits of 9.57 µM and 2.32 µM, respectively. Both modes were successfully employed to the detection of Hg 2+ and GSH in actual samples with spiked recoveries ranging from 88.9% to 108.0%. Benefiting from the porous characteristics of MOF and the specific recognition capability of the boric acid group, the proposed probe exhibits notable advantages including facile preparation, operational simplicity, high sensitivity, and excellent selectivity. This study provides a facile, reliable and field-applicable novel detection strategy for environmental monitoring and the investigation of interactions between heavy metals and biomolecules. Graphical
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Xinyu Yao,Bobo Yang,Lan Li,Jinfang Kong,Canyun Zhang,Fengchao Wang
Essential Role of Eu 3+ in low-lead CsPbBr 3 QD glass. • Tunable Green-to-Red Emission via Eu/Pb Ratio. • Eu 3+ induced lattice contraction and PL blue shift. • Optical temperature sensing based on dual emission. CsPbBr 3 perovskite quantum dots (QDs) have garnered considerable attention owing to their outstanding optical properties. However, their practical applications are hindered by poor stability and the toxicity of lead, whereas lead-free alternatives often compromise optical performance. In this study, Eu 3 + -incorporated low-lead CsPbBr 3 QDs embedded in borosilicate glass were successfully fabricated via melt quenching and heat treatment. The molar fraction of PbBr 2 in the glass system is as low as 0.0367–0.0612%, corresponding to a lead reduction of approximately 97% compared with conventional CsPbBr 3 QD glasses. We demonstrate that Eu 3+ ions are essential for the precipitation of CsPbBr 3 QDs under low-lead conditions. Meanwhile, Eu 3+ provides red emission, thereby creating dual emission centers. The green-to-red emission ratio can be finely tuned by varying the Eu/Pb ratio. In addition, Eu 3+ substitution for Pb 2+ induces lattice contraction, which causes a blue shift of the emission peak of CsPbBr 3 QDs. Temperature-dependent photoluminescence (PL) spectra of the Eu0.6 Pb0.08 sample reveal that the fluorescence intensity ratio (FIR) increases monotonically with increasing temperature from 100 to 300 K, with maximum absolute and relative sensitivities of 3.77 × 10 −2 K −1 and 5.55 × 10 −1 K −1 , respectively. This work demonstrates the potential of low-lead perovskite QD glasses for optical temperature sensing.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Ming Hong,Helin Niu,Xiao Lian
A Eu-MOG@PAN nanofibrous membrane was fabricated for amikacin sensing. • Amikacin induces red-to-blue fluorescence switching in the solid-state membrane. • Ratiometric detection is achieved without an additional reference fluorophore. • The membrane shows high selectivity with a detection limit of 0.38 μM. • Amikacin in whey was successfully determined by visual and fluorescence analysis. Lanthanide metal–organic materials are attractive for optical sensing, but their application in complex aqueous samples is often hindered by single-channel emission, poor processability and insufficient signal reliability. Herein, we report a flexible mixed-matrix nanofibrous membrane fabricated by confining a europium metal–organic gel (Eu-MOG) within an electrospun polyacrylonitrile (PAN) scaffold. The membrane enables amikacin-triggered ratiometric luminescence sensing via nanoscale interfacial coordination. Upon exposure to amikacin, the amino groups of amikacin coordinate to Eu 3+ sites, perturb the Eu–carboxylate microenvironment and weaken the antenna effect, resulting in strong quenching of the Eu 3+ emission and simultaneous recovery of ligand-centred blue emission at 458 nm. This red-to-blue transformation provides a built-in ratiometric readout (I₄₅₈/I₆₁₉) without the need for an additional reference fluorophore. Control experiments confirm that the 458 nm emission originates from the organic ligand rather than from amikacin or PAN. Mechanistic studies based on fluorescence lifetimes, FT-IR, XPS, zeta-potential and spectral overlap reveal that the response is dominated by amikacin–Eu 3+ coordination and the consequent disruption of ligand-to-Eu 3+ energy transfer. The electrospun membrane offers an open, mechanically robust architecture that facilitates analyte access and solid-state operation. It exhibits high selectivity for amikacin over common inorganic ions, amino acids, and other antibiotics. The ratiometric response is linear over the low-concentration range of 1–9 μM, while the response at 10–100 μM can be described using a Logistic fitting model. The calculated limit of detection is 0.38 μM. The method was successfully applied to the determination of amikacin in whey samples with good reproducibility. This work presents a ligand-emission activation strategy for constructing lanthanide-based ratiometric nanofibrous membranes and demonstrates a portable platform for visual screening of antibiotic residues in dairy products. Download: Download high-res image (286KB) Download: Download full-size image
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