TALANTA
·
2018
·
IF 4.244
Li Yang,Yonghai Song,Mulan Zeng,Yue Du,Bingxian Peng,Zhenzhong Huang,Li Wang
It is of great significance for superoxide anion (O 2 •− ) detection due to its important role in regulation of biological function. The nanoscale coordination polymers (NCPs) core-shell nanostructures have attracted increasing interests for their nanosized-dependent properties. In this study, SiO 2 @Tb/guanosine 5′-monophosphate (GMP) NCPs with core-shell nanostructures was designed for O 2 •− detection. The SiO 2 @Tb/GMP NCPs core-shell nanostructures were produced by using SiO 2 nanoparticles (NPs) as template to control their nano-size. First, Tb 3+ was adsorbed on the surface of SiO 2 NPs by coordination with -COOH of SiO 2 NPs. Then the Tb/GMP NCPs shells were grown along the surface of SiO 2 NPs. The SiO 2 @Tb/GMP NCPs core-shell nanostructures were characterized with scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy and Zeta potential. The resulted SiO 2 @Tb/GMP NCPs core-shell nanostructures displayed strong Tb/GMP emission which decreased linearly with the increased O 2 •− concentration in the range from 5.3 nM to 6.0 μM with a limit detection of 2.18 nM. And the SiO 2 @Tb/GMP NCPs core-shell nanostructures also exhibited good selectivity and high sensitivity in HEPES buffer at pH 7.4.
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PubMed
高影响因子
CRYSTENGCOMM
·
2018
·Vol. 20
·期 40
·6351-6357
·
IF 3.304
Kui-Suo Yang,Yi-Lian Li,Yang-Yang Ma,Li-Na Feng,An-Ping Wu,Yan Qiao,Jin-Rong Bao,Wen-Xian Li,Xiao-Wei Zhu,Ran-Bo Yu
A novel core–shell–shell SiO2@CePO4:Tb@SiO2 submicro-sphere was controllably synthesized by a bridging ligand organosilane HOOCC6H4N(CONH(CH2)3Si(OCH2CH3)3)2 (MABA-Si) connecting the silica core and rare earth ions. The as-synthesized samples were investigated using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and infrared spectroscopy (IR). It is found that SiO2@CePO4:Tb@SiO2 has a ∼25 nm outermost shell, a ∼4 nm intermediate shell, and a ∼200 nm core. SiO2@CePO4:Tb@SiO2 exhibits stable photoluminescence properties in aqueous solution: its photoluminescence intensity was unquenched even after 15 days. The core–shell–shell submicro-spheres were found to have better photoluminescence than the core–shell submicro-spheres because the SiO2 shell protected the phosphor materials and then improved its photoluminescence intensity and biocompatibility. A formation mechanism of the core–shell–shell SiO2@CePO4:Tb@SiO2 submicro-spheres was proposed. Thus, the low-cost preparation of the core–shell–shell SiO2@CePO4:Tb@SiO2 submicro-spheres could be rationally achieved using SiO2.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2013
·Vol. 48
·期 15
·5140-5147
·
IF 2.163
Gai Guangqing,Wang Liyan,Dong Xiangting,Xu Shuzhi
Fe 3 O 4 /PVP//Tb(BA) 3 phen/PVP magnetic–photoluminescent bifunctional bistrand aligned composite nanofibers bundles based on Fe 3 O 4 nanoparticles (NPs) and terbium complex Tb(BA) 3 phen (BA = benzoic acid) were fabricated by employing a parallel axial electrospinning setup and were characterized by X-ray diffraction, field-emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS), transmission electron microscopy, fluorescence spectroscopy, and vibrating sample magnetometer. It is found that Fe 3 O 4 NPs were only dispersed into one strand of the bistrand aligned composite nanofibers bundles, but no nanoparticles in the other strand. And the average diameter of the individual strand fiber was 200 ± 25 nm. The bistrand aligned composite nanofibers bundles exhibit strong green emissions under the excitation of 275 nm ultraviolet light, and the 5
D
4 → 7
F
5 hypersensitive transition at 545 nm was the predominant emission peak of Tb 3+ ions. The newly obtained bifunctional nanofibers bundles exhibit excellent magnetism and high fluorescence intensity and are expected to apply in biology cell separation, magnetic resonance imaging, drug deliver, and fluorescence immunoassays/imaging.
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高影响因子
LUMINESCENCE
·
2017
·Vol. 33
·期 1
·119-124
·
IF 1.509
Nan Liu,Juan Hao,Keying Cai,Mulan Zeng,Zhenzhong Huang,Lili Chen,Bingxian Peng,Ping Li,Li Wang,Yonghai Song
A novel ratiometric fluorescence nanosensor for superoxide anion (O 2 •− ) detection was designed with gold nanoparticles-bovine serum albumin (AuNPs-BSA)@terbium/guanosine monophosphate disodium (Tb/GMP) nanoscale coordination polymers (NCPs) (AuNPs-BSA@Tb/GMP NCPs). The abundant hydroxyl and amino groups of AuNPs-BSA acted as binding points for the self-assembly of Tb 3+ and GMP to form core-shell AuNPs-BSA@Tb/GMP NCP nanosensors. The obtained probe exhibited the characteristic fluorescence emission of both AuNPs-BSA and Tb/GMP NCPs. The AuNPs-BSA not only acted as a template to accelerate the growth of Tb/GMP NCPs, but also could be used as the reference fluorescence for the detection of O 2 •− . The resulting AuNPs-BSA@Tb/GMP NCP ratiometric fluorescence nanosensor for the detection of O 2 •− demonstrated high sensitivity and selectivity with a wide linear response range (14 nM–10 μM) and a low detection limit (4.7 nM).
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高影响因子
JOURNAL OF LUMINESCENCE
·
2024
·
IF 3.3
Tianshe Yang,Peilin Wu,Ruifeng Chen,Jingfei Ni,Chao Xu,Xiangmei Liu,Shi Wang,Shujuan Liu
Scintillators are of significance for X-ray excited luminescence (XEL) imaging from scientific research to medical diagnostics application. Rare earth fluoride nanocrystals possess distinctive luminescent properties originated from the abundant energy level of lanthanide activators, showing potential applications as next-generation scintillators. Herein, high Z atomic rare earth element lutetium was chosen to synthesized NaLuF 4 -based nanoscintillators by Tb doping. Core-shell structure was fabricated to further enhance the XEL emission intensity. The NaLuF 4 -based nanoscintillators was demonstrated more efficient XEL emission with 3-folds increase compared to NaYF 4 nanocrystals. NaLuF 4 nanocrystals with a 25 mol% Tb doping and an inert shell coating exhibited excellent scintillation performance with detection limit as low as to 57.05 nGy air s −1 . X-ray imaging demonstrated a high spatial resolution of 10.5 lp mm −1 using a scintillator film made from as-prepared NaLuF 4 -based nanoscintillators. Finally, such NaLuF 4 -based scintillators film have been applied in X-ray imaging application for a chip and a biological specimen. This study proposed an effective strategy to enhance XEL for rare earth fluoride, providing the ability for high-quality X-ray imaging.
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高影响因子
ACS ES&T Water
·
2024
·
IF 4.8
Meiou Zhang,Bing Yan,Yong Li,Xianjun Xie
The excessive presence of ammonia and ammonium in groundwater poses potential hazards to human health and ecosystems; thus, accurate measurement of the ammonia nitrogen concentration is very important. Herein, a stable and highly luminescent decorated Tb-MOF was prepared by a hydrothermal and substitution reaction. Under the optimized detection conditions, the decorated Tb-MOF can detect ammonia nitrogen with an exceptional fluorescence enhancement in a wide detection range. The detection limit was determined to be 1.5514 × 10–2 μM in the lower concentration range from 0 to 0.0021 M. In addition, the as-prepared nanosensor also exhibited superior detection selectivity and anti-interference with respect to ammonia nitrogen, and the detection mechanism was investigated as the formation of an isoindole complex from dialdehyde with ammonia nitrogen to induce the energy transfer process. Furthermore, its practical ability was studied in groundwater with a decorated Tb-MOF. The detection in actual groundwater samples proves that this material can be used for practical applications. Our research provides a new method for visual, rapid, and in situ detection of ammonia nitrogen in groundwater.
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高影响因子
BIOSENSORS & BIOELECTRONICS
·
2024
·
IF 10.7
Qiulin Chen,Sheng Li,Xiaoyan Tu,Xinfeng Zhang
The pH of human sweat is highly related with a variety of diseases, whereas the monitoring of sweat pH still remains challenging for ordinary families. In this study, we developed a novel dual-emission Tb-MOF using DPA as the ligand and further designed and constructed a skin-attachable Tb-MOF ratio fluorescent sensor for real-time detection of human sweat pH. With the increased concentration of H + , the interaction of H + with carbonyl organic ligand leads to the collapse of the Tb-MOF crystal structure, resulting in the interruption of antenna effect, and correspondingly increasing the emission of the ligand at 380 nm and decreasing the emission of the central ion Tb 3+ at 544 nm. This Tb-MOF nanoprobe has a good linear response in the pH range of 4.12–7.05 (R 2 = 0.9914) with excellent anti-interference ability. Based on the merits of fast pH response and high sensitivity, the nanoprobe was further used to prepare flexible wearable sensor. The wearable sensor can detect pH in the linear range of 3.50–6.70, which covers the pH range of normal human sweat (4.50–6.50). Subsequently, the storage stability and detection accuracy of the sensors were evaluated. Finally, the sensor has been successfully applied for the detection of pH in actual sweat samples from 21 volunteer and the real-time monitoring of pH variation during movement processing. This skin-attachable Tb-MOF sensor, with the advantages of low cost, visible color change and long shelf-life, is appealing for sweat pH monitoring especially for ordinary families.
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高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2025
·
IF 4.6
Yifan Yao,Zuyao Fu,Xiaojun Hu,Jing Xie,Zhaoyang Ding
As dairy consumption increases, antibiotic residues in milk pose a serious threat to public health. Developing simple, rapid, and highly sensitive detection technologies is crucial for ensuring food safety. In this study, a novel fluorescent sensor, Tb/UiO-66, was synthesized by coordinating terephthalic acid ligands with terbium and zirconium ions (Tb 3 + /Zr 4+ ). This sensor enables ratiometric fluorescent detection of tetracycline (TC), exhibiting characteristic emission peaks at 394 nm, 490 nm, and 594 nm. TC quenches the emission of UiO-66 at 394 nm via the inner filter effect (IFE) and quenches the fluorescence at 490 nm through coordination with Tb 3+ . The sensor, based on the F 394 /F 490 ratio, achieves a linear range of 10–90 μg/mL and a detection limit of (LOD)0.097 μg/mL (3σ). In real milk samples, recovery rates ranged from 95.87 % to 102.44 %, with a relative standard deviation below 2.88 %. This fluorescent sensor features a simple design, rapid response, and high sensitivity, establishing a reliable platform for assessing antibiotic contamination in food safety.
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高影响因子
DYES AND PIGMENTS
·
2025
·
IF 4.2
Yuqing Yang,Shicong Pei,Mingdi Yang,Kehua Zhang,Jie Jin,Yunsheng Ding,Xianhai Hu
Full-color fluorescent tunable materials have attracted much attention due to their broad application prospects in fields such as lighting, display devices, and biological imaging. However, it remains challenging to prepare environmentally friendly full-color fluorescent tunable materials through simple and efficient methods. Herein, a series of amino-functionalized complexes were synthesized, and, via covalent bonding, a color-tunable waterborne polyurethane system (WPU-Eu 1-x-y Tb x Zn y ) was developed, exhibiting both full-color and white fluorescence. In addition, due to the inherent differences in the ultraviolet absorption properties of each complex, the emission color can be further adjusted by changing the excitation wavelength. This dual mechanism enables both preset and dynamic color adjustments, providing various possibilities for applications such as anti-counterfeiting and display technologies. More importantly, WPU-Eu 1-x-y Tb x Zn y uses water as a dispersant, has a low VOC content, and is particularly safe and environmentally friendly.
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高影响因子
LUMINESCENCE
·
2017
·Vol. 32
·期 7
·1277-1282
·
IF 1.509
Keying Cai,Mulan Zeng,Fenfen Liu,Nan Liu,Zhenzhong Huang,Yonghai Song,Li Wang
An easy and effective strategy for synthesizing a ratiometric fluorescent nanosensor has been demonstrated in this work. Novel fluorescent BSA–AuNPs@Tb–AMP (BSA, bovine serum albumin; AMP, adenosine 5′-monophosphate; AuNPs, Au nanoparticles) metal–organic framework (MOF) nanostructures were synthesized by encapsulating BSA–AuNPs into Tb–AMP MOFs for the detection of 2,6-pyridinedicarboxylic acid (DPA) and Hg 2+ . DPA could strongly co-ordinate with Tb 3+ to replace water molecules from the Tb 3+ center and accordingly enhanced the fluorescence of Tb–AMP MOFs. The fluorescence of BSA–AuNPs at 405 nm remained constant. While the fluorescence of BSA–AuNPs at 635 nm was quenched after Hg 2+ was added, the fluorescence of Tb–AMP MOFs remained constant. Accordingly, a ratiometric fluorescence nanosensor was constructed for detection of DPA and Hg 2+ . The ratiometric nanosensor exhibited good selectivity to DPA over other substances. The F 545 /F 405 linearly increased with increase of DPA concentration in the range of 50 nM to 10 μM with a detection limit as low as 17.4 nM. F 635 /F 405 increased linearly with increase of Hg 2+ concentration ranging from 50 nM to 1 μM with a detection limit as low as 20.9 nM. Additionally, the nanosensor could be successfully applied for the determination of DPA and Hg 2+ in running water.
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高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Jian He,Bowen Wang,Changshuai Gong,Xuejiao Wang,Qiushi Wang,Ji-Guang Li
Gd 3+ co-doping is effective to enhance the photoluminescence of rare earth activators in various host due to energy transfer, however, it is rarely reported via such strategy to regulate persistent luminescence properties. In this work, Gd 3+ was co-doped into the SrLaAlO 4 : Tb persistent luminescence phosphors, and it is found that the photoluminescence and persistent luminescence of the products can be simultaneously improved. The results indicate that as the doping concentration of Gd 3+ increases, the particle diameters increase which contributes the increased luminescence. Additionally, an energy transfer process from Gd 3+ to Tb 3+ ions was observed, which enhances the emission of Tb 3+ ions. Furthermore, the persistent luminescence properties of the synthesized phosphors were improved. When the UV light source is turned off, the persistent luminescence of SrLaAlO 4 : 0.03Tb 3+ , x Gd 3+ ( x = 0.00–0.97) can last for more than 2 h, which is 100 % enhanced compared to SrLaAlO 4 : 0.03Tb 3+ . The trap distribution of SrLaAlO 4 : 0.03Tb 3+ , x Gd 3+ ( x = 0.00–0.97) phosphors was analyzed by thermoluminescence. It is found that after the substitution of La 3+ with Gd 3+ , the trap position shifted towards higher temperatures and the trap concentration increased. The initial intensity of the persistent luminescence was also enhanced after Gd 3+ co-doping. Based on the experimental findings, the luminescence and persistent luminescence mechanism of SrLaAlO 4 : 0.03Tb 3+ , x Gd 3+ ( x = 0.00–0.97) phosphors were described and discussed.
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高影响因子
Current Analytical Chemistry
·
2025
·Vol. 21
·期 1
·57-67
·
IF 1.7
Mengfei Yang,Jing Shi,Taiming Luo,Xiaozhan Yang
Aims By using terephthalic acid, 2, 5-furandicarboxylic acid, and terbium nitrate hexahydrate, a Tb-MOF with a core-shell structure was successfully designed and prepared. Methods A one-pot method was employed to design and synthesize core-shell Tb-MOF. The morphology, luminescence performance, and stability were well characterized. Results Tb-MOF demonstrated good water stability, acid and alkali resistance, and thermal stability. Tb-MOF was found to have high sensitivity to detect Cr3+, Bi3+, and acetone in an aqueous solution, and the LOD of Cr3+, Bi3+, and acetone were calculated to be 0.18 μM, 4.22 μM, and 0.26%, respectively. The sensing mechanism of Cr3+ and acetone was explained as energy-competitive absorption, and the sensing mechanism of Bi3+ was explained as ion replacement. Conclusion The prepared Tb-MOF can be developed as a multifunctional light-emitting sensor with high selectivity.
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高影响因子
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