FOOD CHEMISTRY
·
2024
·
IF 8.5
Yuchi Zhang,Le Han,Bohan Li,Yan Xu
Exploring materials with the dual functionality of detecting and removing tetracycline (TC) residues is crucial because of the environmental and health risks posed by antibiotic overuse. This study introduces a dual-emissive luminescent probe, CDs@ZSM-5:Eu 3+ , created through a solvent-free method combined with subsequent Eu 3+ ion exchange. The nanocomposite's blue emission, originating from carbon dots (CDs), is quenched by TC via an internal filtering effect, while an antenna effect triggers a strong red fluorescence of a TC-Eu 3+ chelate. The ratiometric fluorescence changes in CDs@ZSM-5:Eu 3+ endow a self-calibrated sensing mechanism for TC, offering a low detection limit of 5.04 nM and a broad detection range of 0.01–50 μM. Demonstrated in real milk samples, the probe exhibits high selectivity and accuracy in detecting TC. The nanocomposite also displayed an impressive TC removal capacity of 238.1 mg g −1 in water, ascribing to the enrichment and electrostatic attraction effects of ZSM-5 toward TC molecules. This research offers a facile strategy for constructing multifunctional zeolite-based hybrids for simultaneous TC detection and removal from aqueous solutions.
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高影响因子
Photonics and Nanostructures-Fundamentals and Applications
·
2025
·
IF 2.9
Xin Li,Yangyang Guo,Huibing Mao,Ye Chen,Jiqing Wang,Weifeng Fang
The TiO 2 :Eu 3+ inverse opals have the anatase structure and can be analyzed approximately by the two-dimensional photonic crystal. The emission spectra of the Eu 3+ ions in the TiO 2 :Eu 3+ inverse opal demonstrate that the inverse opal has significant manipulation effect on the emission of the Eu 3+ ions. With the polystyrene (PS) microsphere size of 300 nm, the emission intensity ratio of the magnetic dipole transition 5 D 0 → 7 F 1 to the electric dipole transition 5 D 0 → 7 F 2 increases by about 4.9 times in the TiO 2 :Eu 3+ inverse opal in comparison with the reference TiO 2 :Eu 3+ nanomaterials sample, meanwhile the electric dipole emission 5 D 0 → 7 F 4 at 695 nm also increases significantly. With the deviation of the PS microsphere size, the above manipulation effect also decreases. The theoretical analysis implies that the above manipulation is mainly due to the forbidden photonic band of the TE mode in the TiO 2 :Eu 3+ inverse opal, which results in the decrease of the electric local density of state in the forbidden photonic band and the decrease of the emission 5 D 0 → 7 F 2 , on the contrary, the corresponding emissions 5 D 0 → 7 F 1 and 5 D 0 → 7 F 4 will increase.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Yougui Yang,Junhao Li,Yusheng Xu,Ling He,Meng Wu,Qiudong Duan,Cang Zhang,Kunpeng Shi,Yong Yang,Qi Wang,Zhangwen Long,Dacheng Zhou,Jianbei Qiu
All-inorganic perovskite QDs, such as CsPbX 3 (X = Cl, Br, I), have garnered significant attention in the field of optoelectronics as emerging photonic materials. Rare-earth (RE) doping is an effective strategy for enhancing the optical properties of CsPbX 3 perovskite quantum dot glasses. Therefore, investigating the crystallization behavior of rare-earth ion-doped CsPbX 3 glass and the energy transfer mechanisms between rare-earth ions and CsPbX 3 is crucial for advancing the development of rare-earth-doped perovskite glass materials. The paper systematically introduces the preparation methods, structural characteristics, and applications of CsPbBr 1.5 Cl 1.5 QDs in optoelectronic devices. Firstly, the detailed effects of Eu 3+ and F⁻ doping on the structure and optical properties of CsPbBr 1.5 Cl 1.5 quantum dot glass are discussed. Subsequently, the crystal structure, size distribution, and morphology of CsPbBr 1.5 Cl 1.5 QDs are characterized using X-ray diffraction (XRD) and transmission electron microscopy (TEM). Furthermore, the application of CsPbBr 1.5 Cl 1.5 QDs in LEDs and temperature sensing optoelectronic devices is explored, highlighting their performance and potential value in these applications. This study provides important references and guidance for further research and application of CsPbBr 1.5 Cl 1.5 QDs in the field of optoelectronics.
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RSC Advances
·
2017
·Vol. 7
·期 87
·55489-55495
·
IF 3.108
Yumei Bu,Bin Cui,Weiwei Zhao,Zhenfeng Yang
A carrier possessing simple structure and composition, but with microwave-targeted-fluorescence multifunctional properties to precisely control the delivery of the drug was prepared. Herein, we have constructed the multifunctional Fe3O4@ZnAl2O4:Eu3+@mSiO2–APTES core–shell drug-carrier via direct precipitation method and sol–gel process with surfactant-assistance approach. This carrier is a monodisperse microsphere with an average particle size of 325 nm. Fe3O4 in the core has a high saturation magnetization and provides the Fe3O4@ZnAl2O4:Eu3+@mSiO2–APTES with good drug targeting properties. The ZnAl2O4:Eu3+ interlayer has the characteristic of fluorescent luminescence and can be used to monitor the transport of drugs in the body in real time. In addition, the ZnAl2O4:Eu3+ as a dielectric loss microwave absorbing material combines with the high magnetic loss Fe3O4 to form a composite material, which improved the microwave thermal response. Over 78.2% of VP16 molecules were released under microwave trigger. In addition, mesoporous silica nanoparticles in the outer layer improve the drug loading efficiency through organic modification. The results indicated that this multifunctional drug-carrier with simple structure and composition is a potential controlled drug delivery system in cancer therapy.
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Journal of the Taiwan Institute of Chemical Engineers
·
2017
·
IF 4.217
Long Huang,Weihua Luo,Meiying Liu,Jianwen Tian,Qiang Huang,Hongye Huang,Junfeng Hui,Yuanqing Wen,Xiaoyong Zhang,Yen Wei
The luminescent hydroxyapatite nanorods co-doped with Eu 3+ and F − (named as FAp:Eu 3+ ) were synthesized through liquid-solid-solution strategy to control their size and morphology as well as improve their fluorescence. However, these luminescent FAp:Eu 3+ nanorods are hydrophobic nature and cannot be directly used for biomedical applications. In this work, we developed a novel strategy for surface modification of FAp:Eu 3+ nanorods with the combination of the surface ligand exchange reaction and photo-initiated reversible addition-fragmentation chain transfer (photo-RAFT) polymerization using the biocompatible and hydrophilic poly(ethylene glycol) methacrylate (PEGMA) as the monomer. We demonstrated that the photo-RAFT polymerization is a facile and efficient route to fabricate hydrophilic FAp:Eu 3+ -polyPEGMA composites based on a series of characterization techniques. The FAp:Eu 3+ -polyPEGMA composites still well maintained the morphology and luminescent properties. Furthermore, the resultant FAp:Eu 3+ -polyPEGMA composites showed low cytotoxicity and desirable cell uptake behavior. These features suggested that the FAp:Eu 3+ -polyPEGMA composites are of great potential for biological imaging applications. More importantly, the photo-RAFT polymerization should be promising for preparation of many other luminescent nanocomposites owing to their advantages of photo-RAFT polymerization such as low polymerization temperature, high efficiency, absence of metal catalysts and good monomer applicability. It is therefore, the photo-RAFT could be extended for fabrication of many other multifunctional fluorescent composites for different biomedical applications.
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Materials Today Chemistry
·
2024
·
IF 6.7
Hanyu Xu,Yanling Wei,Rong Wang,Guiying Liang,Tianqi Sheng,Zuoling Fu
The cesium-based fluoride Cs 3 YF 6 has increasingly attracted curiosity due to its potential in up-conversion luminescence applications, signifying a possible revolutionary change in the next generation of lanthanide-doped luminescent functional materials. However, the nature of the photoluminescence process involving Cs 3 YF 6 has still not been studied in detail. Developing Cs 3 YF 6 luminescence applications is an intricate endeavor. Herein, we present the optimal doping concentration required for Eu 3+ and Tb 3+ doping in Cs 3 YF 6 . Meanwhile, by spectra analyses and theoretical model simulations, we have been able to decipher the intricacies of the energy transfer interaction that transpires between Tb 3+ and Eu 3+ ions. Furthermore, a water-sensitive fluorescence response system tailored for anti-counterfeiting applications was designed, which relied on the superior luminescence characteristics of Cs 3 YF 6 doped with Tb 3+ /Eu 3+ under excitation at 254 nm, whilst simultaneously exploiting the easily deliquescent nature of Cs 3 YF 6 . This work not only enhances the understanding of Cs 3 YF 6 materials in the field of rare-earth luminescence but also introduces a novel anti-counterfeiting strategy, that propels the development of applications for rare-earth-doped fluoride materials.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 12
·1-13
·
IF 2.8
Wang Leilei,Ji Xiaohui,Xiao Kefeng
A series of red-luminescence bismuthate phosphors of double perovskite BaBiNaTeO 6 doped with trivalent europium (Eu 3+ ) were prepared by the solid-state diffusion method. The crystal structure and phase purity of the phosphors were analyzed. The photoluminescence (PL) properties of BaBiNaTeO 6 :Eu 3+ were studied in detail. Upon blue light (466 nm) excitation, the powders showed brilliant red light at around 619 nm, and it was attributed to the electric dipole (ED) 5 D 0 → 7 F 2 transition of Eu 3+ . The optimal dopant concentration ( x ) of the as-prepared phosphor was x = 0.60 mol and the concentration quenching mechanism was evaluated as the electric quadrupole–quadrupole interaction. The BaBiNaTeO 6 :Eu 3+ exhibited good thermal stability and the corresponding activation energy ( E a ) was obtained to be 0.27 eV. The chromaticity points of phosphors were near the edge of the red region of the Commission Internationale De L’Eclairage (CIE) 1931 chromaticity diagram. As-prepared white LED based on the GaN blue chip exhibited relatively low correlated color temperature (CCT) of 5042.5 K and high color rendering index (CRI) of 91.6. All characterizations suggest that these double perovskite BaBiNaTeO 6 :Eu 3+ red-emitting phosphors have promising applications in illumination and display field based on blue LEDs.
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ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Tao Zhang,Zerun Zhang,Haolan Yao,Luoyao Lian,Tianhan Kai,Xiangzhu Wang,Ping Ding
Ciprofloxacin (CIP) residues in environmental and food matrices lead to potential public health and safety issues, necessitating the development of a sensing platform for ultra-sensitive detection of CIP residues to achieve rapid on-site detection. Here, a high-performance fluorescence sensing platform based on Eu 3+ -functionalized metal-organic framework (Eu 3+ @UiO-(COOH) 2 ) was developed for the sensitive detection and visual analysis of CIP in environmental and food samples. First, ligand screening was achieved through theoretical calculations (ligand excited-state energy levels, frontier molecular orbitals, and electrostatic potential distribution) to probe the ligand modulation of fluorescence properties. Subsequently, based on the ligand engineering strategy for synthesizing Eu 3+ @UiO-(COOH) 2 with excellent fluorescence performance and CIP self-fluorescence, a smartphone-integrated ratiometric fluorescence sensing platform was constructed to achieve rapid quantification of CIP via the blue/red light intensity ratio (B/R), with a limit of detection (LOD) as low as 36 nM, along with a mobile phone-based rapid visualization and quantification function. The systematic study demonstrated that the quenching effect of CIP on Eu 3+ @UiO-(COOH) 2 fluorescence originated from a synergistic multipath mechanism: photoinduced electron transfer (PET) between the ligand and CIP was dominant, supplemented by dynamic quenching and inner filter effects (IFE). In addition, the sensing platform demonstrated reliability in complex matrices. This study provides a novel solution for antibiotic contamination monitoring with both laboratory accuracy and field applicability.
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Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 26
·9606-9616
·
IF 5.7
Shilei Yan,Dongming Pi,Yingzhu Zi,Heping Zhao,Rongbao Feng,Keliang Ruan,Jianbei Qiu,Zhiguo Song,Anjun Huang,Yue Liu,Yangke Cun,Zhengwen Yang
The demand for accurate temperature readings in harsh high-temperature environments includes miniaturization, flexibility, visualization, and integrability of temperature sensors with the growing need for human development. Rare earth-doped non-contact fluorescence intensity ratio (FIR) temperature sensors have received widespread attention due to their high detection accuracy and fast response ability. However, the limitations of thermal quenching (TQ) and thermal coupling energy level differences restrict their applications. In this work, a novel temperature sensing method in Eu3+/Tb3+-doped Y2Mo3O12 negative thermal expansion (NTE) materials is proposed, which depends on different energy transfer characteristics of Eu3+- and Tb3+-doped NTE materials. Under a 295 nm excitation laser, the Y2Mo3O12:Eu3+ phosphor achieved 600% enhancement due to the charge-transfer band (CTB) absorption between O2− and MoO42−. At 573 K, the luminescence intensity of Y2Mo3O12:Tb3+ is reduced by 30 times due to the absence of energy transfer between the Tb3+ ions and Y2Mo3O12 NTE materials. The Y2Mo3O12:Eu3+/Tb3+ mixing materials enhance the relative luminescence intensity and solve the thermal coupling energy level differences, achieving high sensitivity and resolution (maximum Sr = 2.56% K−1 at 453 K). The Y2Mo3O12:Eu3+/Tb3+ flexible thin film achieves multiple naked-eye color spans, breaking free from the limitations of optical detection instruments and demonstrating strong potential for robust and direct temperature reading without equipment. This demonstrates their superior advantages for visualizing real-time high-temperature sensing with nonplanar surfaces, thermal defect diagnosis systems, intelligent battery monitoring systems, and other high-temperature sensing fields.
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JOURNAL OF RARE EARTHS
·
2025
·
IF 7.2
Weilong Qin,Xu Chen,Xiaowei Deng,Meng Wang,Dongyang Zhu,Jibin Zhang,Ying Liu,Maochen Jia,Xinjian Li,Wen Xu,Zhifeng Shi
White light-emitting diodes (WLEDs) have garnered significant attention due to their key applications in lighting and display technologies, especially in the development of single-component white-light-emitting materials. Herein, we synthesized Cs 3 TbCl 6 nanocrystals (NCs) with tunable white light emission by introducing Eu 3+ ions. The single-component white-light emission comprises blue, green, and red components, originating from self-trapped exciton, Tb 3+ , and Eu 3+ emissions, respectively. Through precisely controlled Eu 3+ doping, we achieve a high energy transfer efficiency of 48.3% from Tb 3+ to Eu 3+ , which is attributed to the enhanced spatial overlap between electrons and holes as revealed by spectroscopic analysis and density functional theory calculations. The fabricated WLED devices based on Cs 3 TbCl 6 :Eu 3+ NCs exhibit excellent performance with a half-life exceeding 330 h, Commission International de l’Eclairage (CIE) coordinates of (0.316, 0.330), and a high color rendering index (CRI) of 89.4. Furthermore, the excitation-dependent emissions enable effective anti-counterfeiting and information encryption functionalities. This study presents a robust ionic doping strategy for modulating energy transfer in single-component white light-emitting nanomaterials, offering promising potential for applications in lighting, display, and information security technologies.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Hongbo Liu,Xu Wang,Chaoyong Deng,Min Zhang
In this investigation, the photoluminescence properties, energy transfer phenomenon of BaY 2 ZnO 5 :Sm 3+ /Eu 3+ doped/co-doped phosphor are reported and synthesized by high temperature solid state reaction method. The crystal structure, micromorphology, optical diffuse reflectance and photoluminescence properties of the samples were studied. The results show that concentration quenching phenomenon is found. With the increase of Eu 3+ ion concentration, the emission peaks of Sm 3+ gradually decrease, indicating that energy transfer between Sm 3+ and Eu 3+ . The optimal concentrations are 0.05 mol and 0.2 mol for single doping Sm 3+ and Eu 3+ , respectively. The energy transfer efficiency is calculated to be 78.47–95.19 %. The BaY 2 ZnO 5 phosphors have potential application value in the fields of white light LEDs and anti-counterfeiting.
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JOURNAL OF FLUORESCENCE
·
2022
·Vol. 33
·期 3
·965-972
·
IF 2.525
Zheng Yabin,Li Chen,Li Quan,Zhang Taoyi,Chen Jing,Ji Wenxi,Wei Yun
Sodium tripolyphosphate, a food additive, is applied broadly in food industry. However, excessive accumulation of sodium tripolyphosphate can result in electrolyte abnormality of the body. Therefore, it is of great importance to investigate an effective method for the detection of sodium tripolyphosphate. In this work, nitrogen-doped carbon dots (NCDs) with constant fluorescence were fabricated using a domestic microwave oven. A ratiometric fluorescent probe was constructed in which NCDs were as internal standard, calcein & Eu 3+ were as the detection signal. The fluorescence of calcein at 515 nm was quenched by Eu 3+ , whereas the emission peak of NCDs at 446 nm was almost unchanged. Additionally, the fluorescence of calcein was recovered because of the strong interaction of sodium tripolyphosphate and Eu 3+ . The linear range for sodium tripolyphosphate was 0.5-6 µmol/L with detection limit of 0.12 µmol/L. Furthermore, the ratiometric fluorescent probe was applied for sodium tripolyphosphate detection in real milk samples.
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