OPTICAL MATERIALS
·
2024
·
IF 3.8
Jiadong Li,Xudong Zhao,Weiwei Li,Ping Lu,Mengling Xia,Xianghua Zhang,Yinsheng Xu
The terbium (Tb) ions doped magneto-optical glasses have attracted significant attention due to their high Verdet constant and excellent optical properties . In the Tb ions doped glass, +3 and + 4 valence states of Tb ions coexisted. However, only the +3 valence is favorable for magneto-optical performance. This study proposed a strategy to increase the concentration of Tb 3+ ions ( C Tb 3+ ) in the glass. The high optical basicity Na 2 O is beneficial for enhancing the Verdet constant. The lower melting temperature suppresses the oxidation of the Tb 3+ to Tb 4+ , leading to the increase of C Tb 3+ . As a result, the Verdet constant at 650 nm was achieved as high as 78.6 rad/(T·m), representing a 42.8 % improvement compared to glasses melted at 1450 °C. This approach avoids glass crystallization at high concentrations of Tb doping and provides a new solution for preparing high-performance magneto-optical glasses.
研究领域:
材料科学
·
光学材料
·
磁光学
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DOI
高影响因子
CRYOGENICS
·
2022
·
IF 2.134
Yuwei Chen,Wang Liu,Jingcheng Feng,Ruixin Guo,Feidi Fan,Jun Shen,Guochun Zhang,Heng Tu
A series of lanthanide-rich oxyborates LiLn 6 O 5 (BO 3 ) 3 (LLnOB, Ln = Gd, Tb, Dy, and Ho) have been synthesized using high temperature solid state method. Their magnetic and magnetocaloric properties were investigated upon magnetic susceptibility ( χ ), magnetization ( M ), and isothermal magnetic entropy change ( −ΔS m ) measurements. The maximum − ΔS m, max of LiGd 6 O 5 (BO 3 ) 3 is 44.7 J kg −1 K −1 at 4 K and Δμ 0 H = 9 T, which is higher than the one of commercial Gd 3 Ga 5 O 12 (GGG, −ΔS m, max = 41.8 J kg −1 K −1 at 2 K for Δμ 0 H = 9 T). For LiHo 6 O 5 (BO 3 ) 3 , −ΔS m, max is 14.12 J kg −1 K −1 at 3 K and Δμ 0 H = 2 T, which is also larger than that of Ho 3 Ga 5 O 12 (HoGG, − ΔS m, max = 4.38 J kg −1 K −1 at 2 K for Δμ 0 H = 2 T) and Dy 3 Ga 5 O 12 (DGG, − ΔS m, max = 11.0 J kg −1 K −1 at 2 K for Δμ 0 H = 2 T). These results indicate that LiGd 6 O 5 (BO 3 ) 3 and LiHo 6 O 5 (BO 3 ) 3 may be competitive candidates for applications as magnetic refrigerants. Moreover, thermal stability, infrared spectrum (IR), and ultraviolet–visible-near-infrared diffuse reflectance spectrum (UV–Vis-NIR) were carried out to characterize the title compounds.
研究领域:
材料科学
·
物理学
·
化学
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Mingbing Yi,Wenjun Liu,Cong Wang
Lactate, a critical biomarker for various physiological and pathological conditions, necessitates precise quantification methods for effective disease diagnostics and monitoring. Traditional detection techniques, though effective, are often hampered by the need for complex instrumentation and procedures. Here, this study introduces a highly sensitive and selective electrochemiluminescence (ECL) aptasensor for the detection of lactate, leveraging the unique properties of DNA-terbium (Tb) nanoparticles (NPs) and aptamer technology. Specifically, in this label-free ECL sensor, DNA-Tb NPs were utilized as both ECL probes and recognition unit, which were synthesized by a simple coordination driven self-assembly of lactate aptamer ligand with terbium ions metal center. The biosensor exhibits a remarkable limit of detection (LOD) of 2.9 μ M across a linear range of 0.01 to 10 mM, demonstrating high selectivity, stability, reproducibility, and practical application potential. The work not only underscores the efficacy of DNA-Tb NPs in enhancing ECL signals but also showcases the aptamer’s role in achieving high specificity towards lactate detection. The optimization of assay conditions further elevates the biosensor’s performance, establishing it as a promising tool for the rapid, simple, and sensitive detection of lactate in various settings.
研究领域:
生物传感
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分析化学
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医学诊断
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产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2019
·Vol. 48
·期 22
·7910-7917
·
IF 4.052
Xue-Ying Wu,Qi Zhao,Dong-Xue Zhang,Ya-Chuan Liang,Kui-Kui Zhang,Qian Liu,Lin Dong,Chong-Xin Shan
Luminescent hybrid materials based on nanodiamonds (NDs) and rare earth ions have been successfully synthesized by covalently modifying NDs with pyromellitic acid (PMA) which is capable of coordinating to Eu3+ and Tb3+ ions. With NDs acting as a host matrix, the PMA and rare earth ions serve as an organic sensitizer and activator, respectively, yielding a highly bright hybrid composite. Interestingly, for the co-doped hybrid composites ND-PMA-Eu/Tb, the intensity ratio of the two emissions, 5D4 → 7F5 transition (Tb3+) to 5D0 → 7F2 transition (Eu3+), is linearly related to temperature in the range from 77 K to 277 K. Therefore, the hybrid could be developed as a self-calibrated ratiometric luminescent thermometer due to its temperature-dependent luminescence performance.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Long Chen,Yanhua Song,Qiwen Yu,Hao Dong,Chenying Pan,Di Wang,Jun Liu,Xing Chen
Gas sensing requires precise gas detection, hence the need for the development of semiconductors with highly selective and sensitive properties. Herein, different amounts of Tb-doped Fe 2 O 3 nanotubes (NTs) are successfully fabricated for detecting acetone gas using electrospinning followed by calcination at 550 °C. Specifically, the gas sensing investigation indicated that 5% Tb–Fe 2 O 3 NTs to 50 ppm acetone reached 53.2 at 170 °C, which is 13 times higher than that of pure Fe 2 O 3 NTs. In addition, the sensor also displays good selectivity and a low detection limit (200 ppb) for acetone. The significant increase in acetone sensing performance could be ascribed to hollow structures with a high specific surface area and the increase in oxygen vacancies by Tb doping. The proposed Tb-doped Fe 2 O 3 NTs offer an effective strategy for fabricating a highly sensitive acetone sensor, which can work well at a relatively low temperature.
研究领域:
材料科学
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纳米技术
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传感器与执行器
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化学工程
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产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2022
·Vol. 24
·期 14
·2551-2557
·
IF 3.756
Xi Chen,Hao Lu,Qi Gu,Nan Zhang,Shuaihua Wang,Shaofan Wu
Scintillators can convert high-energy rays into ultraviolet or visible light and are widely used in medical diagnosis, safety inspection, and industrial flaw detection. Nowadays, conventional scintillation materials have certain limitations, including the extreme synthesis conditions and complex synthesis process of bulk scintillators, as well as toxicity and poor stability of perovskite quantum dots (QDs). Fluoride has high stability and simple synthesis, which can effectively solve these problems. LiYbF4 has the advantages of a larger atomic number and density, and the synthesis of LiYbF4:Tb nanocrystals (NCs) exhibited good stability to thermal injection. X-ray tests showed that Tb3+-doped LiYbF4 NCs were more sensitive to X-rays than the commercial scintillator BGO, and the detection limit was 360 nGy s−1, which was 1/15 of the medical X-ray detection dose rate. Our self-made scintillation film with a load of 40 wt% and a thickness of 150 μm had excellent X-ray imaging capabilities with a spatial resolution of up to 20 LP mm−1 (MTF = 0.35), which shows great application potential in the X-ray imaging of biological and non-biological structures.
研究领域:
材料科学
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医学影像
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纳米技术
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DOI
高影响因子
MICROCHIMICA ACTA
·
2023
·Vol. 190
·期 9
·1-11
·
IF 5.7
Liu Yujie,Gao Ran,Liu Xingcen,Zheng Jinhua,Wu Xia
Curcumin (Cur) possesses diverse biological and pharmacologic effects. It is widely used as a food additive and therapeutic medicine. A study to determine a sensitive detection method for Cur is necessary and meaningful. In this work, double rare earth ions co-doped fluorescent coordination polymer nanoparticles (CPNPs) were developed for the Cur detection. The CPNPs were synthesized by using adenosine monophosphate (AMP) as bridge ligands via coordination self-assembly with Ce 3+ and Tb 3+ . The AMP-Ce/Tb CPNPs exhibited the characteristic green fluorescence of Tb 3+ and had high luminescence efficiency. Under the optimal conditions, the fluorescence intensity of AMP-Ce/Tb CPNPs could be significantly quenched by Cur. The fluorescence quenching extent at λ ex / λ em of 300 nm/544 nm showed a good linear relationship with the Cur concentration in the range of 10 to 1000 nM. The detection limit was as low as 8.0 nM ( S/N = 3). This method was successfully applied to the determination of Cur in real samples with satisfactory results. The luminescence mechanism of AMP-Ce/Tb CPNPs and the fluorescence quenching mechanism of the CPNPs by Cur were both examined. Graphical abstract
研究领域:
分析化学
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生物医学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Baoxia Liu,Haoshuang Shen,Daosheng Liu,Yuanqiang Hao,Xu Zhu,Qi Shen,Peng Qu,Maotian Xu
Metal-organic coordination polymers have emerged as attractive functional materials due to their tunable structures and unique properties. In this work, by the self-assembly of citrate (Cit) and lanthanide ions, we developed lanthanide coordination polymer nanoparticles (LCPNPs), Cit/Tb, for fluorescence sensing of guanosine-5-monophosphate (GMP). The LCPNP-based Cit/Tb sensor alone displayed weak luminescence, however, the addition of GMP to Cit/Tb led to the formation of a ternary LCPNP, Cit/Tb-GMP, with a significantly enhanced luminescence (15-fold) owing to the intramolecular energy transfer from GMP to Cit/Tb and the hydrophobic environment in the polymer interior. This luminescence turn-on assay exhibited excellent selectivity and high sensitivity for GMP with detection limit of 100 nmol L −1 . Furthermore, the Cit/Tb LCPNP possesses a long luminescence lifetime of up to a millisecond, which is important for detecting GMP in complicated samples of infant formula and ham by time-resolved fluorimetry. We believe that the presented Cit-based nanosensor would inspire the development of various new LCPNP-based fluorescent assays by utilizing Cit or other water-soluble, non-toxic organic ligands for a variety of applications in fluorescence sensing, bio-imaging, drug delivery and so on.
研究领域:
化学
·
生物分析
·
材料科学
✓ 已验证
DOI
高影响因子
Advanced Science
·
2026
·
IF 14.1
Lingzhi Chen,Jiaqi Yu,Jing Xu,Lingqi Chen,Ninghao Zhang,Wenrui Li,Runmin Zeng,Xiaomin Luo,Yiqun Chang,Jiayin Lai,Wenshi Huang,Xiaochen Liang,Ting Zhao,Shanze Chen,Huaihong Cai,Yanguang Cong,Pinghua Sun,Jiang Pi,Xueqin Huang,Haibo Zhou,Junxia Zheng
Rapid and sensitive diagnostic strategies are crucial for the prevention and control of tuberculosis (TB). Unlike the invasive TB diagnostic strategy in the clinic, here we introduce a convenient, portable, and non-invasive system that is constructed by Ag@Au nanoflower (NF) array-based sensing facemask and catalytic/plasmonic urchin-shaped Au─Ag embedded covalent organic framework (U@COF) sensor. This system detects TB antigen ESAT-6/CFP-10 complex in droplet or sputum samples from a variety of clinical settings. Practical analysis of clinical samples demonstrates this assay is capable of classifying the negative ( N = 12 ) and positive ( N = 17 ) TB patients with satisfactory sensitivity (76.5%) and specificity (100%), among whom two TB-infected patients (TB3 and TB5) missed by droplet analysis are successfully identified by sputum analysis. More importantly, two cases with abnormally elevated ESAT-6/CFP-10 levels are screened out from close contacts of TB patients ( N = 6 ), which is highly suggestive of TB infection (Close contacts 3 and 4). This portable mask is suitable for rapid diagnosis of TB infection in patients with cough, particularly for screening of TB close contacts.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Pengjun Zhang,Yifei Xu,Shuwei Hao,Chongqiang Zhu,Chunhui Yang
The conventional random co-doping of Tb 3+ and Eu 3+ leads to spatial separation that severely limits energy transfer efficiency between these ions, which is critical for minimizing non-radiative losses in white LEDs. To address the limitation, we designed BaTb 4- x Si 3 O 13 : x Eu 3+ , breaking through the bottleneck by occupying Tb 3+ sites with Eu 3+ . Rietveld refinement and ionic radius analysis confirmed site occupancy selectivity, enabling 71.59 % Tb 3+ →Eu 3+ energy transfer efficiency, which is higher than conventional random doping systems. Under 380 nm excitation, the phosphor yielded red emission with CIE coordinates of (0.6153,0.3838) and 86.64 % color purity, and exhibited exceptional thermal stability with 70 % intensity retention at 473 K. Fabricated wLEDs using a NUV chip with commercial blue phosphor, green phosphor, and the developed phosphor produced warm white light with a correlated color temperature of 4519 K and CIE coordinates of (0.3478, 0.3868), achieving a high color rendering index of 87.4. These results demonstrate BaTb 4 Si 3 O 13 :Eu 3+ as a highly promising red phosphor candidate for solid-state lighting applications.
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产品关联
DOI
高影响因子
POLYMER INTERNATIONAL
·
2024
·
IF 2.9
Fang Wu,Xinfei Zhang,Qi Wang,Dayang Yu,Pan Zheng,Rongli Zhu,Xu Wang,Zejun Pu,Jiachun Zhong
In order to expand the application of biobased polycarbonate in optical components, a series of isosorbide polycarbonate (PICC)/rare earth ion complex fluorescent composites were prepared by using PICC as a macromolecular ligand and Eu 3+ and Tb 3+ as rare earth luminescence centers. The coordination system between rare earth ions and PICC was investigated by Fourier transform infrared spectroscopy, DSC and TGA. On adjusting the ratio of Eu 3+ and Tb 3+ , a PICC/rare earth ion composite with adjustable fluorescence color was obtained. Also, the thermal, mechanical and optical properties of a series of PICC/rare earth ion fluorescent films with different ratios were tested. A transparent fluorescent composite material with excellent mechanical properties and tunable fluorescent colors has been prepared. © 2024 Society of Industrial Chemistry.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
You Li,Sai Xu,Yuefeng Gao,Yongze Cao,Xizhen Zhang,Hongquan Yu,Yichao Wang,Tianshuo Liu,Baojiu Chen
The intrinsic challenge to thermally responsive photoluminescent materials is pertaining to the limited thermal stability and reproducibility. Most prevailing photoluminescent agents suffer from constraints imposed by their frail chemical structure , rendering them fail to work at elevated temperatures for a long time. This inherent limitation curtails their utility within domains in anti-counterfeiting and encoded information storage. Herein, a series of double perovskite Cs 2 NaInCl 6 : Sb 3+ /Ln 3+ (Ln = Er, Dy, Tb, Ho) phosphors were synthesized using the high-temperature hydrothermal method . Upon ultraviolet light illumination, the blue emission band of self-trapped excitons (STEs) and intrinsic emissions of Ln 3+ are observed. In light of the variations in thermal quenching levels of the two emission centers and the effect of temperature on the lifetime of Ln 3+ , multi-mode thermometers with superior sensitivity are established. Moreover, they also can be used in anti-counterfeiting and encoding information storage, relying on the significant temperature-dependent color variation, excellent thermal stability and repeatability. The unique thermochromic properties and satisfactory stability of Cs 2 NaInCl 6 : Sb 3+ /Ln 3+ (Ln = Er, Dy, Tb, Ho) phosphors bring forward a new concept of developing multi-mode thermometers and reliable information encryption systems with the application of thermochromic materials.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）