MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 1
·1-7
·
IF 6.232
Fan Chuan,Lv Xiaoxia,Tian Meng,Yu Qingcai,Mao Yueyuan,Qiu Wanwei,Wang Hua,Liu Guodong
A terbium(III)-functionalized zinc(II)-organic framework (Tb-MOF-Zn) is shown to be a viable fluorescent probe for phosphate. The organic ligands 4,4′,4″-[((2,4,6-trimethylbenzene-1,3,5-triyl)tris(methylene))tris(oxy)]tribenzoic acid (H 3 L 3 ) contains multiple carboxyl groups that can react with zinc(II) to yield tubular MOF-Zn. The MOF-Zn was further functionalized with Tb(III) to produce a lanthanide composite of type Tb-MOF-Zn which displays strong fluorescence with excitation/emission maxima at 285/544 nm. Fluorescence is quenched by phosphate because of the specific interaction with Tb(III) in Tb-MOF-Zn. The concentration of Tb-MOF-Zn, reaction time and pH value of the solution were optimized. Fluorescence drops linearly in the 0.01 to 200.0 μM phosphate concentration range, and the detection limit is 4.0 nM. The fluorescent probe was also used to prepare a microdot array on a glass slide for visual detection of phosphate under illumination with UV light.
A terbium(III) functionalized zinc(II)-organic framework was synthesized and used as fluorescent probe for determination of phosphate ions.
研究领域:
分析化学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
·
2022
·
IF 4.171
Xiaolin Tian,Zhefeng Fan
Rare earth-carbon dots (RE-CDs) nanomaterials combine the merits of both RE and CDs, which have been the promising candidates in the biochemical sensing field. Owing to the diversity of synthetic methods and precursors, the electronic structure, optical properties and sensing performances of RE-CDs vary greatly. Nevertheless, a comparing study focusing on the synthetic methods of RE-CDs using same precursors has not been reported to date. To facilitate the exploration of the interaction mechanisms for RE–CDs, same precursors (folic acid and terbium nitrate) were used to synthesize RE-CDs via two most common fabrication methodologies (doping and direct coordination) in this study. The morphologies, surface groups, and optical properties of the as-prepared terbium-doped CDs (Tb-CDs) and terbium functionalized CDs (Tb@CDs) were comprehensively compared and analyzed. The anthrax biomarker (dipicolinic acid, DPA) sensing performances of both RE-CDs were also evaluated. Taking the original CDs without terbium as control, the Tb-CDs had higher quantum yield (QY) and longer fluorescence lifetime , and the fluorescence emission peak was red-shifted, suggesting the effective passivation of surface defects . On the contrary, QY and fluorescence lifetime of Tb@CDs decreased, and the emission peak remained unchanged, indicating that interaction between free Tb 3+ and CDs led to the less excited electrons, similar to the fluorescence quenching behavior of metal ions on CDs. Further characterization also helped in demonstrating the different interaction mechanisms. Moreover, for the superior performance in DPA detection, Tb-CDs was chosen as the probe for the follow-up application. The Tb-CDs exhibited a sensitive response to DPA in the concentration range of 0.05–8 μM with the detection limit of 44 nM. In addition, it was successfully applied to real samples of running water and lake water.
研究领域:
纳米材料科学
·
生物传感技术
·
光化学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2017
·Vol. 184
·期 7
·2275-2280
·
IF 4.58
Chen Muhua,Zheng Yuhui,Gao Jinwei,Li Chen,Yu Chufang,Wang Qianming
A hybrid organic-inorganic optical probe was developed by using silylated precursors (including tetraethoxy silane and aminopropyltriethoxysilane), ferroferric oxide (Fe 3 O 4 ) and lanthanide coordination units. Cross-linking condensation warrants chemical stability. The shape and size of the resulting nanoparticles can be adjusted to around 40–60 nm. On photo-excitation at 313 nm, they display green fluorescence (peaking at 545 nm) which is strongly enhanced on addition of dopamine in tris-buffer solution (pH = 8.5). Spectroscopic studies demonstrate that this assay exhibits good selectivity for dopamine and has a 0.82 μM detection limit. The hybrid structures can be separated and recycled due to the magnetic properties of Fe 3 O 4 . The feasibility of dopamine analysis in human serum sample has been assessed.
Schematic presentation of a terbium organic-inorganic material whose fluorescence is selectively enhanced by dopamine. The material can be repeatedly used because it can be regenerated by treatment with acids and magnetic separation.
研究领域:
分析化学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Jun Ye,Mingming Zhang,Jian Xiong
A novel, rapid, high selective and sensitive probe, carboxymethyl cellulose (CMC)/Tb(III) with green fluorescence, for detecting Mn 2+ in aqueous solution during pH = 4–10 was proposed in this work. The probe’s synthesis had benefits of mild reaction condition, organic solvent-free and facile operation. A linear relationship between the fluorescence intensity of CMC/Tb(III) probe at 544 nm with 0.046 μM detection limitation and the concentration of Mn 2+ in the range of 0.1–100 μM was obtained. The probe was also used to detected Mn 2+ in tap water and the recoveries were between 97.10% and 101.61%, and the relative standard deviations (RSD, n = 5) of all samples were less than 2.04%. The results by UV absorption spectrum and fluorescence quenching suggested that there might be a dynamic quenching occurred to the fluorescence of CMC/Tb(III) probe when Mn 2+ was involved.
研究领域:
分析化学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2016
·
IF 4.035
Qiang Chen,Junfeng Zuo,Xue He,Xiujuan Mo,Ping Tong,Lan Zhang
In this paper, a simple, rapid and sensitive fluorescence method based on the formation of terbium (Tb 3+ ) complex has been developed for the rapid detection of Tb 3+ in water. The fluorescence sensor has been studied by using terbium complexed with thiabendazole (TBZ) while acetonitrile (MeCN) as solvent. The complex was made up of TBZ as small-molecule ligand and Tb 3+ as central ion. Fluorescence spectroscopy and UV spectroscopy together were used to study the behavior of the complexation of TBZ-Tb in this medium. Enhancement fluorescence was observed due to the efficient energy transfer process from TBZ to Tb 3+ . And the affecting factors of the enhancement fluorescence were also studied in detail. Under optimal conditions, a linear relationship was obtained between the enhanced fluorescence intensity and the concentration of Tb 3+ in a range of 5.0×10 −6 M–3.0×10 −5 M. The sensor was used for the detection of Tb 3+ in river water samples, and the result was satisfactory. In the meantime, a linear relationship was also obtained between the enhanced fluorescence intensity and the concentration of TBZ in a range of 8.0×10 −6 M–4.0×10 −5 M. Moreover, the method was successfully extended for the detection of TBZ in juice samples.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 43
·15312-15321
·
IF 6.4
Rui Rui Yang,Fangrui Cheng,Bang Lan
Trivalent rare earth Eu3+-doped luminescent materials have been used successfully for illumination and displays due to their narrow emission lines and extreme stability. Extending the excitation band to the UV, near UV and blue region via doping lanthanide ions as a sensitizer is highly desired for white LED application. However, the complex redox reaction and forward/backward energy-transfer pathway between the sensitizer ion and Eu3+ ion in the same lattice of the phosphor host limits the potential of this strategy. Herein, we present the luminescence properties of hierarchical porous composite materials with the formula Tb(C12H8N2)2(NO3)3@Ca0.9Eu0.1MoO4 and report how interfacial energy-transfer enhanced the absorption range of the Eu3+-doped material in the UV region. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images illustrated that the obtained Ca0.9Eu0.1MoO4 had a hierarchical porous structure, and the Tb(C12H8N2)2(NO3)3 was evenly filled inside the holes or the surface. The photoluminescence and decay data indicated the existence of interfacial forward energy transfer from Tb3+ → Eu3+. Furthermore, the thermal stability of the composited Tb(C12H8N2)2(NO3)3 was improved, indicating the potential of the composite materials for application in UV light-emitting diodes.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry C
·
2019
·
IF 4.309
Hui Cheng,Qi Sun,Shiping Wang,Yunbo Zhang,Donghua Fan,Jan J. Huang,Shengye Jin
The fundamental understanding of energy-transfer dynamics in lanthanide metal–organic frameworks (Ln-MOFs) is essential for their application as light-emitting materials. In this work, we report time-resolved spectroscopic studies on the energy-transfer (ENT) process within mixed-metal Ln-MOFs based on Tb3+ and Eu3+ (Tb/Eu-MOF) as well as the ENT process from Ln-MOFs to methylene blue (MB+) that encapsulated the MOF. We show that the Tb/Eu-MOF not only exhibits an extended emission spectrum with respect to the single-metal Ln-MOF but also shows a tunable emission lifetime by altering the atomic ratio of Tb3+ and Eu3+, which can be attributed to the additional ENT pathway from Tb3+ to Eu3+. Moreover, in the presence of MB+, ENT can occur from Tb3+ but not from Eu3+ in the mixed-node Ln-MOF, which provides a viable approach to tune the ENT rate and efficiency to MB+ by altering the atomic ratio of Tb3+ and Eu3+.
研究领域:
材料科学
·
光物理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2016
·Vol. 28
·期 7
·5615-5622
·
IF 1.798
Chu Yang,Hao Haixia,Xie Hongde,Chen Cuili,Cai Peiqing,Seo Hyo Jin
In this work, we report the preparation of lanthanide (Eu 3+ , Tb 3+ )-complex-grafted copolymer of methyl methacrylate and maleic anhydride films. The lanthanide complex with three amino groups was used to react with poly(methyl methacrylate-co-maleic anhydride) (P(MMA-MAH)) via the amidation method. Fourier transform infrared (FT-IR), Transmission electron microscope (TEM), Scanning electron microscope (SEM), Thermogravimetric analysis (TGA) were employed to characterize those polymers. Luminescent properties were evaluated through conducting Photoluminescence (PL) excitation spectra, emission spectra and fluorescence decay curves measurements. The infrared analysis reveals the amidation between amino groups and anhydride rings. The comparatively uniform morphology can be observed in the images of TEM and SEM. These polymers can emit intense characteristic lights including red light from Eu 3+ ions and green light from Tb 3+ ions under 294 nm excitation. The lifetimes of polymers are short (about 1 ms). Meanwhile, these luminescent polymers exhibit high thermal stability (T 5 > 200 °C). We also stimulate a lamp to illustrate the possible application. All these approved interesting results suggest that they hold significant promising applications as luminous layers for optoelectronic devices.
研究领域:
材料科学
·
光学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2022
·
IF 8.008
Baoxia Liu,Yaoyao Zhang,Yuanqiang Hao,Xu Zhu,Yintang Zhang,Yanli Zhou,Hongliang Tan,Maotian Xu
This study developed a novel luminescent assay for kinase activity using metal–organic coordination polymer nanoparticles (Tb/ATP-Zn) as the probe. Tb/ATP-Zn, self-assembled by adenosine triphosphate (ATP), Zn2+, and Tb3+, is non-luminescent. Protein kinase A (PKA) can catalyze the transformation of ATP within Tb/ATP-Zn nanoparticles to adenosine diphosphate (ADP), which in turn effectively sensitizes the luminescence of Tb3+. Based on this mechanism, Tb/ATP-Zn can realize the facile luminescent “turn-on” sensing of protein kinase activity without the use of external ATP and substrate peptide. Under optimized conditions, the fluorescence intensities of Tb/ATP-Zn at 550 nm are linear with the PKA activity within a range of 0.3–1.5 U·μL–1. The LOD (S/N = 3) of this method is down to 0.001 U·μL–1. The presented assay also features high selectivity, long-term stability, fast response, and convenient operation. Furthermore, Tb/ATP-Zn was successfully employed for monitoring PKA activity in cell lysis solutions. Probe Tb/ATP-Zn is thus expectable to be a powerful tool for the practical study of PKA in relevant biological events.
研究领域:
生物化学
·
分子生物学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Xinxin Wang,Shan Sun,Ke Cheng,Tao Lin,Henggang Wang,Haoyi Sun,Hengwei Lin,Peng Wang
Pathogenic bacterial spores pose a considerable threat to human health due to their ability to survive extreme environmental conditions. Thus, sensitive detection and efficient inactivation of these spores are essential for preventing disease transmission. However, most existing studies have predominantly concentrated on detection alone. Herein, we developed a versatile nanoplatform that integrates sensitive bacterial spore sensing and in situ spore inactivation capabilities by assembling terbium ions (Tb 3+ ) with photosensitizing carbon dots (CDs), referred to as Tb-CDs nanoassemblies (NAs). By leveraging the unique optical properties of CDs and Tb 3+ ions, along with the antenna effect of lanthanides, Tb-CDs NAs demonstrated highly sensitive visual detection of the key bacterial spore biomarker, pyridinedicarboxylic acid (DPA), achieving a low detection limit of 0.68 μM and excellent selectivity. Additionally, Tb-CDs NAs exhibited practical sensing capabilities in various environments, including spore suspensions and real samples, while monitoring bacterial spore germination. Further studies confirmed that the DPA-triggered disassembly of Tb-CDs NAs led to the release of CDs, enabling higher affinity for spores and in situ inactivation through singlet oxygen generation. This work underscores the potential of CDs-based assemblies for simultaneous pathogen detection and inactivation, providing promising tools for preventing bacterial spread and contamination.
研究领域:
生物传感
·
微生物学
·
纳米医学
✓ 已验证
产品关联
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2024
·Vol. 26
·期 46
·28971-28979
·
IF 2.9
Yuhan Fan,Yongze Cao,Meiling Li,Sai Xu,Yichao Wang,Xizhen Zhang,Jinsu Zhang,Baojiu Chen
A series of Tb3+, Pr3+ and Dy3+ monodoped CaTa4O11(CTO) persistent luminescence (PersL) phosphors have been successfully synthesized using the molten salt method with KCl flux. The PersL color is green and orange for Tb3+ and Pr3+ or Dy3+ doped samples, respectively. The trap depth of Tb3+, Pr3+ and Dy3+ monodoped CTO is 0.33, 0.31 and 0.30 eV, respectively. The PersL time of 3 mol% Tb3+, 1 mol% Pr3+ and 1 mol% Dy3+ monodoped samples is 52.20, 35.00 and 59.46 s, respectively. Tb3+, Pr3+ and Dy3+ monodoped CTO phosphors can be used in luminescence displays and anti-counterfeit labels under commercial 254 nm UV light.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Chemistry
·
2022
·
IF 7.613
An Li,Laihui Luo,Peng Du,Weiping Li,Marcin Runowski,Jun Zhou
The polychromatic emission and wide-range color tuning in the luminescent nanoparticles are currently of crucial importance, due to the development of color and white light-emitting diode (LED) devices, based on such lanthanide-doped nanostructured materials . By utilization of precipitation method, Tb 3+ -doped and Tb 3+ /Eu 3+ -codoped NaYbF 4 nanoparticles ( i . e . NPs) are synthesized. For Tb 3+ -doped NaYbF 4 NPs excited by 377 nm, green emission originating from Tb 3+ is observed, where its optimum state is obtained when Tb 3+ content is 25 mol% and the concentration quenching mechanism is found by electric dipole-dipole interaction. Moreover, due to the existence of energy transfer between Tb 3+ and Eu 3+ , polychromatic emissions are realized in Tb 3+ /Eu 3+ -codoped NaYbF 4 NPs as Eu 3+ content increases. Through analyzing emission decay times and emission spectra , it was confirmed that the energy transfer mechanism in the synthesized NPs is governed mainly by electric dipole-dipole interaction. Furthermore, the resultant NPs also own strong resistance to temperature, which is verified by temperature-dependent emission spectra , and the activation energies of Tb 3+ and Eu 3+ are 0.206 and 0.207 eV, respectively. In addition, by employing designed NPs as yellow-emitting components, the fabricated white-LED emits brightness warm white light with color coordinate of (0.385, 0.380), high color rendering index of 84.3 and low correlated color temperature of 3903 K. This work does not only offer an available route to develop NPs with polychromatic emissions but also devise promising luminescent materials for improving the performance of the phosphor-converted white-LED.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
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