INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Abdur Raheem Aleem,Wei Ding,Jin Liu,Taisen Li,Yaowei Guo,Qian Wang,Yao Wang,Yanxin Wang,Faisal U.L. Rehman,Matt J. Kipper,Laurence A. Belfiore,Jianguo Tang
Water-soluble luminescent lanthanide complexes that can be excited with visible light could enable rapid detection of toxic anions and cations in biological systems. Eu 3+ -induced hyaluronic acid-chitosan aggregates (EIHCA) can improve the stability, biocompatibility, efficiency, and light absorption of luminescent Eu 3+ complexes. Visible-range excitation may avoid phototoxicity associated with overexposure to UV light in biological and ecological applications. In this work, we synthesized and characterized series of EIHCA complexes having three N -donor heterocyclic ligands: 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (Dphen), 2,2′: 6′,2″-terpyridine (Tpy) and 1,10-phenanthroline monohydrate (Phen). These complexes possessed bright red fluorescence with a visible range excitation maximum. The photophysical properties of one formulation (we denote as EDL6) include fast quenching response (20 s) of the fluorescence, multi-selectivity, low limit of detection, and high quenching (K sv ) values, enabling selective, rapid and sensitive recognition of Cr 2 O 7 2− and Fe 3+ in aqueous solution. Furthermore, EDL6 exhibits cytocompatibility with mammalian cells that make these complexes promising biocompatible candidate as a safe replacement of organic fluorophores for fluorescence sensing applications. Thus, these new EIHCA complexes were successfully employed for the selective detection of hazardous materials in biological and aqueous environment samples.
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 27
·55119-55127
·
IF 5.6
Xiaomin Fan,Chaoyong Deng,Min Zhang
A novel Eu 3+ -doped Ca 2 LaNbO 6 (CLN) series phosphors were successfully synthesized using the high-temperature solid-state reaction method, and its properties were investigated. Phase structural analysis and morphological observation suggest successful doping of Eu 3+ ions into the host matrix without alteration of the original phase structure. The prepared phosphors exhibits strongest orange-red emission at 615 nm with 465 nm excitation, which corresponding to the energy level transition form 5 D 0 to 7 F 2 . The optimal doping concentration is 0.07 mol, and the concentration quenching is mainly caused by dipole-dipole interactions. For thermal stability, its intensity maintains the initial 87.14 % at 398 K, which indicats excellent thermal stability. The encapsulated WLEDs show favorable performance with a CTT 3606 K and a color rendering index (CRI) R a is 86. The packaged orange-red LEDs, when soldered onto a PCB board, can display the required letters, suggesting their potential application scenarios in the display field. The packaged orange-red LEDs soldered on PCB for information display. In addition, the excellent application performance in the field of anti-counterfeiting inks were invesitgated.
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高影响因子
CRYSTENGCOMM
·
2024
·Vol. 26
·期 24
·3167-3175
·
IF 2.6
Meifang Liu,Yue Jiang,Huimin Du,Ziwei Zou,Mengtan Ye,Jingyu Chen,Hanying Ren,Jun Yang,Shanshan Hu
Chromium is a common heavy metal element that is harmful to the ecosystem as well as human health, so sensitive detection of chromium ions in solution is important for life and health. In this paper, a series of Eu3+-doped KBi3F10 fluorescent powders were successfully synthesized by a one-step solvothermal method for the selective detection of Cr3+, CrO42− and Cr2O72− ions in an aqueous solution. When adjusting the pH value to 3 and adding PVP as an additive, the obtained KBi3F10:12%Eu3+ phosphor showed excellent red luminescence. Due to the competitive absorption and the inner filter effect of Cr3+, CrO42− and Cr2O72− ions, the red emission from Eu3+ ions produces fluorescence quenching, which can be used to detect them with good selectivity. And the detection limits are as low as 0.19 μM, 0.38 μM and 0.094 μM for Cr3+, CrO42− and Cr2O72− ions, respectively. Other metal ions and common anions showed little interference with chromium ion detection. The obtained fluorescent probe has good recyclability, accurate and reliable detection results, simple operation and low cost and is easy to promote, which make it an excellent three-in-one probe for chromium detection.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2020
·
IF 4.495
Qiang-Qiang Zhu,Peng-Fei Yang,Zai-Yang Wang,Peng-Cheng Hu
To obtain red-emitting luminescent material for high-power UV LED and UV LD applications, an additive-free Y 2 O 3 :Eu 3+ phosphor ceramic was successfully prepared in this work. The nitrate pyrogenation method is applied to obtain raw nanopowders with high reactivity, and a hybrid sintering method combining low-temperature presintering and subsequent hot isostatic pressing (HIP) is then applied to realize full densification of the final ceramic products. The effects of the presintering temperature on the density, microstructural, and optical properties are investigated in detail. The HIP-treated Y 2 O 3 :Eu 3+ ceramic presintered at 1450 °C exhibits a high transmittance near 80 % at 600 nm. Due to the nonuse of sintering additives, the thermal conductivity of Y 2 O 3 :Eu 3+ ceramic product reaches 10.9 Wm −1 K −1 at room temperature. The achieved Y 2 O 3 :Eu 3+ ceramic also exhibits good applicability under the excitation of a UV LED chip and UV laser light, showing promise as a color converter for high-power UV LED and UV LD applications.
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高影响因子
Advanced Materials Technologies
·
2023
·Vol. 8
·期 13
·2202103
·
IF 6.8
Shihai Miao,Ruiqi Shi,Yi Zhang,Dongxun Chen,Yanjie Liang
Trivalent europium (Eu 3+ ) doped phosphors usually radiate orange or red light owing to distinct transitions from the 5 D 0 excited level to the ground states of 7 F 1 and 7 F 2 . However, Eu 3+ activated phosphors with a dominant deep-red emission due to 5 D 0 → 7 F 4 transition are relatively rare. In this work, the synthesis and photoluminescence properties of Ca 3 Al 2 Ge 3 O 12 :Eu 3+ deep-red phosphor with an intense 5 D 0 → 7 F 4 transition are reported. Irradiating this new garnet phosphor with 394 nm near-ultraviolet light generates a dominant deep-red emission band centered at 707 nm. The phosphor has a high internal quantum efficiency of 98.4% and excellent luminescence thermal stability, maintaining 78.8% of the room temperature emission intensity at 150 °C. Based on the unique spectral feature of this new compound, a phosphor-converted deep-red LED prototype device is fabricated, producing an output power of 27.3 mW with a photoelectric conversion efficiency of 4.0% at 200 mA. Plant growth experiments are also conducted to demonstrate the obvious positive effects of the fabricated deep-red LED on plant growth, further indicating that the as-prepared Ca 3 Al 2 Ge 3 O 12 :Eu 3+ deep-red phosphor can act as a promising luminescence converter for plant growth LED bulbs.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Peiyuan Zhuang,Lingxiang Sun,Yunan Lin,Haohao Cao,Jiawei Song,Yanjie Zhang,Bing Li
Nowadays, inorganic metal halide perovskite quantum dots (PQDs) glass ceramics have garnered significant attention due to their high stability and color purity. Their exceptional fluorescence properties confer distinct advantages for forensic sensitive identification, particularly in distinguishing skin ridge characteristics. However, current identification methods suffer from low resolution, cumbersome operational procedures, and limited precision. Therefore, this study designed ultra-stable K + -doped CsPbBr 3 quantum dots capable of local growth within Eu 3+ -doped aluminosilicate glass (ASG) ceramics for efficient and sensitive detection of fingerprints, palm prints, and lip prints. Eu 3+ ions were incorporated into CsPbBr 3 PQDs glass-ceramics to achieve dual emission centers (red emission at 617 nm and green emission at 517 nm). As a green light source with an exceptionally narrow FWHM, CsPbBr 3 PQDs glass-ceramics demonstrate potential applications in sensitive forensic detection due to their high color purity.
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高影响因子
MOLECULES
·
2026
·Vol. 31
·期 13
·2397
·
IF 5.1
Hua Li,Zijun Huang,Yifei Hou,Qiyue Liu,Di Li,Wenyue Zhang,Yi Su,Zhide Wang,Zaifa Yang
Against the backdrop of energy conservation and environmental protection, developing more stable and efficient phosphors has become an urgent challenge. In this study, we have synthesized a series of Ca2.5Hf2.5Ga3O12:Eu3+(CHGO:Eu3+) red phosphors via a high-temperature solid-state method, which exhibit strong red emission at 610 nm under 394 nm excitation, corresponding to the5D0→7F2transition of Eu3+. To improve the lattice vacancies caused by charge imbalance when Eu3+is doped into the CHGO lattice to replace Ca2+, we introduce the charge compensator M+(M = Li, Na, K). The results of the emission spectrum show that the introduction of charge compensators can effectively improve the luminescence intensity. Among them, K+has the most significant effect on increasing the emission intensity of Eu3+, making the emission intensity of the phosphor more than twice that when there are no charge compensation ions. Additionally, the quantum efficiency and thermal stability of these phosphors are significantly improved compared to the CHGO:0.075Eu3+sample before substitution. At 423 K, the emission intensity of the CHGO:0.075Eu3+, 0.075K+sample still remains at 88.7% of that at 298 K. The color rendering index of the prepared white LED is 81.2, and its CIE chromaticity coordinates are (0.3212, 0.3065). This indicates that the prepared CHGO:0.075Eu3+, 0.075K+red phosphor has broad application prospects in solid-state lighting.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Yamin Sang,Ziqing Yin,Xiaolu Wang,Jiye Wang,Shikao Shi,Lianshe Fu
The red-emitting phosphors with superior luminescence performance under the near-ultraviolet excitation play a crucial role in the field of solid-state lighting. Inspired by the idea of high-entropy engineering with multicomponent and microstructural complexities, a novel rare earth (La 0.25 Gd 0.25 Y 0.25 Lu 0.25 ) 2 Zr 2 O 7 : xEu 3+ (x = 1 −9 mol%) compound system was successfully designed and fabricated by solution combustion reaction, in which the Eu 3+ acted as the emission center and urea was used as fuel. The as-prepared high-entropy oxides (HEOs) possess single fluorite phase (space group Fm-3m) with homogeneous rare earth element distribution. Under the excitation with near-ultraviolet 393 nm, the HEO phosphor can generate the strong red-light emission at 613 nm, which corresponds to the 5 D 0 → 7 F 2 characteristic transition of Eu 3+ . The Eu 3+ doping concentration and molar ratio of urea to total metal ion are optimized to be x = 7 mol% and 5:1, respectively. The luminescence internal quantum yield (QY) reaches 37.5% and further increases to 44.0% via a subsequent thermal treatment at 1300 °C, which is dramatically higher than that of Eu 3+ -doped La 2 Zr 2 O 7 (QY = 8.9%), Gd 2 Zr 2 O 7 (QY = 7.7%) low-entropy composites and commercial Y 2 O 2 S:Eu 3+ phosphor. The optical thermal stability of rare earth HEO was also analyzed, indicating the high-entropy compound system with significant potential for the use of near-ultraviolet excited phosphor-converted light-emitting diodes.
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高影响因子
OPTICAL MATERIALS
·
2025
·
IF 4.2
Li Wang,Zhichao Jin,Zhongli Zhu
The SiO 2 –B 2 O 3 –Bi 2 O 3 –CaO (SBBC) luminous glass samples, co-doped with Tm 3+ , Dy 3+ , and Eu 3+ ions, were prepared. Upon 362 nm stimulation, the co-activated SBBC glasses exhibited distinct spectral transitions corresponding to Tm 3+ : 1 D 2 → 3 F 4 , Dy 3+ : 4 F 9/2 → 6 H 15/2 , 13/2 , as well as Eu 3+ : 5 D 0 → 7 F 2 in the 400–700 nm. Moreover, the study identified two significant energy transfer mechanisms, Dy 3+ →Tm 3+ and Dy 3+ →Eu 3+ , which contribute to the enhanced photoluminescence of the glasses. The optimal CIE coordinates were determined to be (0.3312, 0.3436), with CCT of 5552 K, as well as color purity of 2.55 %. Importantly, an investigation into the thermal stability of selected glass revealed an impressive ΔT of 140 °C. This study shows the potential value of glass in the field of W-LED.
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高影响因子
JOURNAL OF LUMINESCENCE
·
2017
·
IF 2.686
Haoyue Hao,Hongyu Lu,Guanghong Ao,Yinglin Song,Yuxiao Wang,Xueru Zhang
The nearly pure green and red emissions of Ho 3+ /Yb 3+ co-doped Gd 2 (MoO 4 ) 3 were realized by tri-doping Eu 3+ and Ce 3+ , respectively. The Ho 3+ /Yb 3+ co-doped Gd 2 (MoO 4 ) 3 powder, radiating intense green and red emissions, was prepared by a typical sol-gel method. Under the excitation of 980 nm laser, the red-to-green ratio was tuned from 0.2 to 4 as the concentration of Eu 3+ changed from 6 to 0 mol%, attributed to the energy transfer processes between Ho 3+ and Eu 3+ . Meanwhile, the red-to-green ratio altered from 4 to 20 as the concentration of Ce 3+ changed from 0 to 20 mol% via the cross relaxing processes between Ho 3+ and Ce 3+ . The prepared phosphors, possessing large tuning range of red-to-green ratio and resisting high temperature, can be potentially applied to colorful display and solid-state lighting.
研究领域:
材料科学
·
光学材料
·
光子学
·
固态照明
·
显示技术
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高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2023
·Vol. 37
·期 6
·e7096
·
IF 3.9
Ping Zhang,Yuchi Zhang,Xianliang Li,Yan Xu
A radial mesoporous silica (mSiO 2 ) supported Eu 3+ -functionalized carbon dots (CDs) nanocomposite (mSiO 2 -CDs-Eu) was successfully prepared using citric acid as CD precursors, showing specific ratiometric tetracycline (TC) fluorescence sensing behavior. The blue fluorescence of CDs is quenched by the internal filtering effect with TC, and the red fluorescence intensity of Eu 3+ ions is improved on account of an antenna effect. The self-calibrated ratiometric fluorescence sensing of TC by mSiO 2 -CDs-Eu showed a minimum detection limit of 30 nM. In addition, a mSiO 2 -CDs-Eu hybridized polyvinylidene fluoride (PVDF) film was developed for optical temperature sensing with a high-temperature sensitivity of 1.69% °C −1 in the physiological temperature range of 25–45°C and a temperature resolution greater than 0.04°C. This work demonstrates a feasible way in fabricating dual-functional mSiO 2 -CDs-Eu nanocomposite with optical ratiometric sensing properties toward both TC and temperature changes, opening its promising applicability for food security and temperature monitoring.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Shaokun Ling,Xiaoyan Qin,Chang chen,Kai Meng,Yifeng Yan,Junyun Ming,Sen Liao,Yingheng Huang,Lei Hou
Despite long-term development of LEDs, problems urgent to resolve is still existing. The most outstanding problem to tackle is luminescent stability at high temperature working situation. In this study, a novel type of β-NaYF 4 based phosphor incorporated with Eu 3+ and Tb 3+ is reported. A series of β-NaYF 4 :0.065Eu 3+ , x Tb 3+ ( x = 0.001, 0.002, 0.003, 0.004, 0.005) phosphors were synthesized by hydrothermal method . The sample β-NaYF 4 :0.065Eu 3+ ,0.002Tb 3+ possesses optimal luminescent property at room temperature. The mechanism of energy transfer from Tb 3+ to Eu 3+ ion is quadrupole-quadrupole interactions. The sample β-NaYF 4 :0.065Eu 3+ ,0.002Tb 3+ demonstrates zero thermal quenching (ZTQ) property at 303 K to 383 K. According to XRD and XPS characterizations, nonequivalent replacement between intrinsic ion Na + and Y 3+ were discovered, which finally leads to production of crystal defects. According to electron paramagnetic resonance (EPR) characterization and density functional theory (DFT) calculation, the type of crystal defect of β-NaYF 4 :0.065Eu 3+ ,0.002Tb 3+ is confirmed to be V Y vacancies which are the predominant defect of crystal. The depths and densities of defects were calculated according to data of thermoluminescence spectra (TL spectra). Crystal defects play the role of electrons traps that could store electrons. Electrons stored in traps will be excited to excitation state of Eu 3+ under the thermal stimulation to offset undesirable impact of thermal quenching (TQ), which leads to ZTQ property of the sample β-NaYF 4 :0.065Eu 3+ ,0.002Tb 3+ . The CRI and CCT of fabricated WLED are 3830 K and 84.1, respectively.
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高影响因子
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