INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Yuan Fu,Yuanhang Li,Jiaqi Wang,Yichang Jing,Jiangbo Pan,Mingjian Ma,Yuan Shen,Di Wang,Shuangying Wei,Chengyu Wang,Jian Li
Carboxymethyl chitosan (CMCh) is a natural polysaccharide derivative with biodegradability, rich in active amino and carboxyl groups. It can act as a ligand to coordinate with rare earth ions, transferring absorbed energy to the central ion to sensitize its luminescence. In this paper, CMCh-Tb 3+ was prepared as a solid fluorescent probe by mixing CMCh solution with Tb 3+ . The morphology, structure and properties of CMCh-Tb 3+ were characterized and analyzed by SEM, IR and XPS, and then the chemical structure of CMCh-Tb 3+ was determined. CMCh-Tb 3+ , as a highly sensitive fluorescent sensor for detecting Cu 2+ , has a detection limit (LOD) of 27.14 nmol/L. Through characterization using fluorescence spectroscopy, ultraviolet absorption spectroscopy, and fluorescence lifetime, we further explored the mechanism of Cu 2+ fluorescence quenching, finding that this process is primarily achieved through dynamic quenching. Additionally, we discovered that glutathione (GSH) can form a strong coordination with Cu 2+ , thereby inhibiting the quenching effect of Cu 2+ on the emission intensity of CMCh-Tb 3+ and restoring its luminescence characteristics. This finding indicates that CMCh-Tb 3+ can not only serve as a fluorescence sensor for detecting Cu 2+ but also as a reversible fluorescence sensor, significantly enhancing its performance in practical applications.
研究领域:
生物化学
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分析化学
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环境科学
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产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 48
·期 4
·1642-1649
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IF 3.3
Xurong Zuo,Pengfei Liu,Qinhao Sun,Jiahui Huang,Yuwei Zhang,Xuecheng Zhu,Runqi Chen,Xiangyu Meng
Because anthrax spores are highly lethal to humans and animals as well as potential biological warfare agents, there is a great need for rapid, sensitive, and selective quantification of dipicolinic acid (DPA) as a biomarker for anthrax spores. Herein, we prepared a novel lanthanide-doped nanoprobe by coordination of Tb3+ ions with tannic acid (TA)-coated zeolitic imidazolate frameworks-8 (ZIF-8) (ZIF-8@Tb–TA). The proposed assay was derived from the unsaturated coordination of Tb3+ ions. In the presence of DPA, Tb3+ ions could be sensitized to emit inherent luminescence due to the energy transfer after coordination with DPA. The results illustrated that ZIF-8@Tb–TA could be used as a sensitive nanoprobe for detecting DPA with a broad linear range (0 μM to 12.0 μM), and the limit of detection (LOD) was 12.3 nM. Moreover, the specific recognition ability of DPA by ZIF-8@Tb–TA was much better than that of other interfering molecules. This study proposed a new strategy to establish lanthanide-functionalized nanoprobes for highly selective and sensitive detection of DPA.
研究领域:
生物化学
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分析化学
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医学检测
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DOI
高影响因子
MATERIALS RESEARCH BULLETIN
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2017
·
IF 2.446
Changlin Liao,Renping Cao,Wudi Wang,Wen Hu,Guotai Zheng,Zhiyang Luo,Pan Liu
NaY(MoO 4 ) 2 :R (R = Sm 3+ /Bi 3+ , Tb 3+ /Bi 3+ , Sm 3+ /Tb 3+ ) phosphors are synthesized by solid-state reaction method in air. The crystal structures, excitation and emission spectra, luminescence properties, the lifetimes, and the dopant concentration influences are investigated. The emission intensity of activators Sm 3+ and Tb 3+ can be enhanced ∼3.04 and 1.64 times due to energy transfer (ET) from Bi 3+ to Sm 3+ /Tb 3+ . NaY(MoO 4 ) 2 :Sm 3+ , Tb 3+ phosphor with excitation 300 nm shows a tunable emission from red to yellow with change Sm 3+ or Tb 3+ ion concentration. Emission intensity of NaY(MoO 4 ) 2 :Sm 3+ phosphor can be enhanced ∼2.24 times via co-doping Tb 3+ ion owing to ET from Tb 3+ to Sm 3+ ions. The results indicate that ET between sensitizer and activator (Bi 3+ → Tb 3+ , Bi 3+ → Sm 3+ , and Tb 3+ → Sm 3+ ) is beneficial to improve the luminescence properties of activator (Sm 3+ and Tb 3+ ). ET and luminous meachanisms are explained by energy level diagrams of Bi 3+ , Tb 3+ , and Sm 3+ ions.
研究领域:
材料科学
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发光材料
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光学物理
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固态化学
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DOI
高影响因子
INORGANIC CHEMISTRY
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2025
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IF 4.7
Feiyan Xie,Junqiang Gu,Shengqian Wang,Shengliang Zhong,Hualan Xu,Junhao Li
Phosphors for white light-emitting diodes (WLEDs) would suffer from inadequate luminescent thermal stability, especially at high temperatures, affecting both the reliability and lifespan of devices. Thus, the development of phosphors with excellent thermal stability is a crucial task. By use of a high-temperature solid-state reaction method, a series of Tb3+ and Eu3+ codoped NaGd2Ga3Ge2O12 (abbreviated as NGGGO) phosphors has been successfully synthesized. With an appropriate doping concentration of Tb3+ and Eu3+, the NGGGO:Tb3+,Eu3+ phosphors can provide color tunable emissions; simultaneously, the energy transfer (ET) efficiency from Tb3+ to Eu3+ can reach nearly 100%. Notably, high-concentration Tb3+ doping in NGGGO could induce oxygen vacancies, giving significant enhancement on the thermal stability of Eu3+ luminescence. For the NGGGO:60% Tb3+,1.6% Eu3+ phosphor, the emission intensity of Eu3+ at 450 K remained even higher than that observed under room-temperature conditions. By use of the as-synthesized phosphor as a red emission converter, a near-ultraviolet pumped WLED device can be fabricated. Under a driving current of 20 mA, the device exhibits high color rendering index (CRI) ∼ 89, low correlated color temperature (CCT) ∼ 4603 K, and bright white light with CIE chromaticity coordinates of (0.3569, 0.3587), which demonstrates the potential of NGGGO:Tb3+,Eu3+ phosphors in WLED application.
研究领域:
材料科学
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光学工程
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Lin Chen,Zhenyu Mao,Yi Ma,Huibo Luo,Suyi Zhang,Danqun Huo,Changjun Hou
The classification and verification of segmented Baijiu hold significant importance as they profoundly influence the blending and overall quality of the Baijiu. Our scholarly investigation yielded a fluorescent sensor with three luminescent modes by integrating Tb 3+ and RHB into UiO-66. The interplay between carboxyl-containing compounds and RHB/Tb@TLU-2 orchestrates a harmonious molecular association, where the convergence of carboxyl groups with Tb 3+ yields a resonating impact on the antenna effect of BDC-SO 3 - . Furthermore, the acidity and alkalinity of reactants induced a charge transfer interaction between BDC-NH 2 and Zr 4+ and led to structural changes in RHB/Tb@TLU-2, resulting in observable fluorescence signal variations across the three emission centers. The sensor array successfully identified eight organic acids, achieving an impressive 97.5 % accuracy in discerning segmented Baijiu samples from four Baijiu pits. This meticulous methodology prioritizes simplicity, swiftness, and effectiveness, paving the path for comprehensive segmented Baijiu analysis in the esteemed realm of Brewing production.
研究领域:
化学
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食品科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
Laser & Photonics Reviews
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2025
·
IF 10
Xinru Huang,Hang Yang,Yi Wei,Haonan Ju,Wei Wang,Dong Tu,Guogang Li
Mechanical quenching (MQ) represents a distinctive mechano-optical response, in which the afterglow intensity is quenched under the applied mechanical stress. Compared with mechanoluminescent (ML) materials, the research on physical mechanism and sensing application of MQ materials is still insufficient. Moreover, existing mechano-optical materials typically respond only to dynamic stress, while ML materials are unable to exhibit luminescence under static stress, restricting their utility in stress-sensing applications. In this work, the MQ characteristics of CaZnOS:Cu + are systematically studied, which displays a linear mechano-optical response to dynamic and static stress. Furthermore, this material shows a sensitive response to micro-strain in stretching tests. Therefore, a novel mechanical switch device is introduced combined with CaZnOS:Cu + and a ML material LiTaO 3 :Tb 3+ . By comparing the alteration in luminescence intensity during stretching, different stages of stress are digitally encoded, achieving both dynamic and static stress sensing and effectively differentiating the information output. These findings provide a new approach for multi-mode dynamic and static stress sensing by utilizing mechano-optical materials and pave a significant avenue for the information integration of mechano-optical materials in the field of stress sensing.
研究领域:
材料科学
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光学
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力学
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产品关联
DOI
高影响因子
Advanced Optical Materials
·
2017
·Vol. 6
·期 2
·1700864
·
IF 6.875
Qingsong Hu,Zha Li,Zhifang Tan,Huaibing Song,Cong Ge,Guangda Niu,Jiantao Han,Jiang Tang
Rare earth ions Eu 3+ and Tb 3+ are doped into CsPbBr 3 nanocrystals (NCs) for the first time, utilizing a one-pot ultrasonication method. As-synthesized NCs exhibit dual emissions from NCs and rare earth ions, further strengthening the competitiveness of perovskite NCs for lighting application.
研究领域:
材料科学
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光学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
·
IF 6.2
Jinrong Gao,He Bai,Xiao Ling,Yunjiang Yang,Xinru Liu,Zhipeng Fan,Jinrong Bao,Wenxian Li,Ying Liu,Xiaowei Zhu
A rare earth organic complex, SiO 2 @ATPA-Si-RE (RE = Eu, Tb), exhibiting a core-shell structure, was synthesized using the ligand (HOOC) 2 C 6 H 3 NHCONH(CH 2 ) 3 Si(OCH 2 CH 3 ) 3 (ATPA-Si) to connect the silica microspheres core and coordinate with rare earth ions. The pH value of the reaction was adjusted to produce organic complex shells with thicknesses of 2.0 nm and 5.0 nm, while the SiO 2 core measured a diameter of 125 nm. Luminescence spectra indicated that the emission intensity of the SiO 2 @ATPA-Si-RE (RE = Eu, Tb) core-shell structure was stronger than that of the ATPA-Si-RE organic complex due to a perfect match between the triplet energy level of SiO 2 @ATPA-Si and the excited energy level of rare earth ions (Eu 3+ , Tb 3+ ). Remarkably, the core-shell structure with a 2.0 nm shell thickness possessed a greater emission intensity compared to the 5.0 nm shell thickness. Moreover, these findings unveiled the tunability of luminescence color, ranging from green or red to white, by adjusting the doping ratio of Eu 3+ and Tb 3+ ions and the coating thickness of complexes. Particularly, a warm white light emission, characterized by CIE coordinates (0.389, 0.347), a color rendering index value of 86.7, and a low correlated color temperature value of 3550 K, was achieved using the organic complex with a 2.0 nm thickness coated on SiO 2 microspheres with a doping ratio of Eu 3+ at 0.7 mmol and Tb 3+ at 0.3 mmol. Conversely, the complexes with a 5.0 nm coating thickness and Tb 3+ doping ratio of 0.3 mmol yielded a cold white light emission. These findings demonstrate the potential applications in next-generation lighting industry and display systems.
研究领域:
材料科学
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光学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 29
·期 24
·20808-20819
·
IF 2.324
Zhao Ji,Zhao Dan,Liu Bao-Zhong,Xue Ya-Li,Fan Yan-Ping,Zhang Shi-Rui,Zong Qiu
A new member of rare-earth orthoborate K 3 Gd 3 B 4 O 12 was prepared by a flux method and structurally characterized by single-crystal structure analysis for the first time. It features a two-dimensional layer structure containing [Gd 8 (BO 3 ) 8 ] ∞ layers parallel to the ab -plane. Gd(3)O 7 groups, B(3)O 3 groups, B(4)O 3 groups and large K + ions distribute in between the[Gd 8 (BO 3 ) 8 ] ∞ layers, and bond adjacent layers. Theoretical researches by density functional theory (DFT) revealed that the compound K 3 Gd 3 B 4 O 12 is an indirect band-gap semiconductor and the optical absorption can be mainly ascribed to O→K, O→Gd and O→B charge transfers. Moreover, a series of K 3 Gd 3− x − y B 4 O 12 : x Tb 3+ , y Eu 3+ phosphors were prepared, their morphology and tunable multicolour emission properties were studied. Under UV or near-UV excitations the luminescence colours will tune from green through yellow, orange to red by simply adjusting the relative Tb 3+ and Eu 3+ concentrations.
研究领域:
材料科学
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光学
·
理论计算
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DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2020
·Vol. 103
·期 5
·3273-3285
·
IF 3.502
Dayu Huang,Yi Wei,Peipei Dang,Xiao Xiao,Hongzhou Lian,Jun Lin
LaScO 3 : x Bi 3+ , y Tb 3+ , z Eu 3+ ( x = 0 − 0.04, y = 0 − 0.05, z = 0 − 0.05) phosphors were prepared via high-temperature solid-state reaction. Phase identification and crystal structures of the LaScO 3 : x Bi 3+ , y Tb 3+ , z Eu 3+ phosphors were investigated by X-ray diffraction (XRD). Crystal structure of phosphors was analyzed by Rietveld refinement and transmission electron microscopy (TEM). The luminescent performance of these trichromatic phosphors is investigated by diffuse reflection spectra and photoluminescence. The phenomenon of energy transfer from Bi 3+ and Tb 3+ to Eu 3+ in LaScO 3 : x Bi 3+ , y Tb 3+ , z Eu 3+ phosphors was investigated. By changing the ratio of x , y , and z , trichromatic can be obtained in the LaScO 3 host, including red, green, and blue emission with peak centered at 613, 544, and 428 nm, respectively. Therefore, two kinds of white light-emitting phosphors were obtained, LaScO 3 :0.02Bi 3+ ,0.05Tb 3+ , z Eu 3+ and LaScO 3 :0.02Bi 3+ ,0.03Eu 3+ , y Tb 3+ . The energy transfer was characterized by decay times of the LaScO 3 : x Bi 3+ , y Tb 3+ , z Eu 3+ phosphors. Moreover absolute internal QY and CIE chromatic coordinates are shown. The potential optical thermometry application of LaScO 3 :Bi 3+ ,Eu 3+ was based on the temperature sensitivity of the fluorescence intensity ratio (FIR). The maximum S a and S r are 0.118 K −1 (at 473.15 K) and 0.795% K −1 (at 448.15 K), respectively. Hence, the LaScO 3 :Bi 3+ ,Eu 3+ phosphor is a good material for optical temperature sensing.
研究领域:
材料科学
·
发光材料
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光学物理
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固态化学
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传感器技术
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2016
·
IF 3.782
Ying Wang,Fuyang Liu,Yingjie Hua,Chongtai Wang,Xudong Zhao,Xiaoyang Liu,Hongdong Li
Tb 3+ doped BiVO 4 has been successfully synthesized by a simple microwave-assisted hydrothermal method at 140 °C for 30 min. The structure, morphology and optical property of the Tb 3+ doped BiVO 4 products have been systematically investigated. This study indicates that the incorporation of Tb 3+ could induce the conversion of structure from monoclinic to tetragonal for BiVO 4 . Furthermore, the as-obtained Tb 3+ doped BiVO 4 samples showed an obvious morphological change: the hollow square rod-like BiVO 4 crystal gradually changed to spindle-like crystal. The Tb 3+ doped BiVO 4 products exhibited extraordinary photocatalytic activity for Methylene Blue (MB) degradation under visible light irradiation. The doped BiVO 4 at a molar ratio of 2 at% (Tb and Bi) with a mixture of monoclinic and tetragonal phases showed and prominent photocatalytic degradation rate, which reached 99.9% in 120 min. The results suggest that the differences in the photocatalytic activity of these BiVO 4 crystals with different Tb 3+ doping concentrations can be attributed to the change of crystalline phases, and the coexistence of the monoclinic/tetragonal phases in BiVO 4 products, which improve the efficient charge separation and transportation.
研究领域:
材料科学
·
环境科学
·
化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Sheng Wu,Puxian Xiong,Dongliang Jiang,Binli Xiao,Yao Xiao,Yan Chen,Yinzhen Wang
When a material is stimulated by external stress, the mechanical energy may be converted into light energy calling mechanoluminescent (ML). The unique excitation method makes it promising for a wide range of applications in the field of stress sensing. However, traditional stress sensing methods based on absolute ML intensity have limitations in unpredictable and complex measurement environment. To address this topic, a ratiometric ML intensity-based stress sensing method has been proposed, which significantly improves the reliability and stability of sensing results. In this paper, a single Tb 3+ ion-doped garnet ML compound is designed. The variation of defect concentration in the material was induced by changing the dopant concentration and the local crystal field intensity. Ratiometric ML stress sensing was achieved through external mechanical stimuli, which causes a change in local positional symmetry. The linear relationship between the luminescence intensity asymmetry ratio and stress was investigated, and the excellent stability and reliability of the ML material were demonstrated under multiple stress cycles. The single-activator ratiometric ML intensity strategy presented in this study provides a new approach for improving stress sensing accuracy, which represents an essential step for the application of ML materials in stress sensing.
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高影响因子
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