TALANTA
·
2019
·
IF 4.916
Jiaqi He,Hui Zhi,Qi Hu,Hu Meng,Jihui Wang,Liang Feng
Detection of trace manganese (Ⅱ) ion (Mn 2+ ) is crucial to water safety. Here, commercially available PS-DVB microspheres were sulfonated and then filled into the SPE column in order to separate Mn 2+ from complex matrices. Meanwhile, europium (III) complex was prepared with a simple “one pot” method, and its fluorescence intensity was quenched gradually with the increase of Mn 2+ concentration. Europium (III) complex combined with home-made SPE column was utilized for highly selective and sensitive measurement of Mn 2+ . The detectable concentrations of Mn 2+ can be low as 0.2 μM, which was less than the drinking water guidelines. Consequently, this new method is promising to assess the content of Mn 2+ rapidly and accurately in real-world water samples.
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高影响因子
Materials Horizons
·
2023
·Vol. 11
·期 5
·1294-1304
·
IF 13.3
Xu Li,Bibo Lou,Xu Chen,Meng Wang,Huifang Jiang,Shuailing Lin,Zhuangzhuang Ma,Mochen Jia,Yanbing Han,Yongtao Tian,Di Wu,Wen Xu,Xinjian Li,Chonggeng Ma,Zhifeng Shi
Lead halide perovskite nanocrystals (NCs) are highly promising for backlighting display applications due to their high photoluminescence quantum yields (PLQYs) and wide color gamut values. However, the practical applications of blue emitters are limited due to the toxicity of lead, unstable structure, and unsatisfactory PLQY. Herein, we report the successful synthesis of divalent europium-based perovskite CsEuBr3 NCs using a modified hot injection method. By optimizing the reaction conditions, the CsEuBr3 NCs display a deep-blue emission at 443 nm with a full width at half maximum (FWHM) of 28.5 nm, a color purity of 99.61%, and a record high PLQY of 93.51% for deep-blue narrow-band emissive lead-free perovskite NCs as far as we know. The emission mechanism of CsEuBr3 NCs is proved through first-principles calculations and spectral analysis. Notably, the CsEuBr3 NCs exhibit remarkable stability when exposed to high temperature, UV irradiation, and long-term sealed storage. The incorporation of CsEuBr3 NCs into polydimethylsiloxane (PDMS) serving as a converter is utilized for white light-emitting devices (WLEDs). WLEDs for backlight displays achieves a wide color gamut of 127.1% of the National Television System Committee standard (NTSC), 94.9% coverage of the ITU-R Recommendation BT.2020 (Rec.2020), and their half-lifetime is up to 1677 h, providing a promising pathway for highly efficient, environment-friendly and practical liquid crystal display backlights.
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高影响因子
Journal of Physical Chemistry C
·
2023
·
IF 3.7
Xinyu Fu,Yao Li,Huwei Li,Jing Feng,Hongjie Zhang
Lead-free halide perovskites (LFHPs) have been intensively studied due to their characteristics of nontoxicity, unique structure, and tunable photoluminescence properties by replacing lead ions. Here, we report a special quasi-two-dimensional (quasi-2D) RbEu2Cl5 through a self-reducing hot-injection method. The as-prepared RbEu2Cl5 shows two sharp blue emissions (430 and 470 nm) and a shoulder broad emission (510 nm), which could be attributed to the 4f65d1 → 4f7 electronic dipole transition of Eu2+ in different coordination structures (CN = 8 and 7) and self-trapped excitons (STEs), respectively. Then, Ce3+ ions are introduced into RbEu2Cl5 to enhance the STEs luminescence by crystal lattice distortion and heighten photoluminescence quantum yields. At the optimal doping concentration of 10%, RbEu2Cl5:Ce3+ NCs could exhibit excellent self-activated warm white emission. Furthermore, the corresponding white light-emitting diodes device with the CIE color coordinate (0.36, 0.38) was fabricated by combining RbEu2Cl5:10% Ce3+ NCs with an ultraviolet light-emitting diodes chip. This work not only develops a new LFHPs structure, but also provides potential LFHPs for self-activated white light-emitting applications.
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高影响因子
RSC Advances
·
2013
·Vol. 3
·期 43
·20077-20084
·
IF 2.562
Jing Cuan,Bing Yan
Benzoate (4-hydroxybenzoate, 4-mercaptobenzoate and 4-aminobenzoate) functionalized polymer resin (Merrifield resin (MR) or Wang resin (WR)) and mesoporous silica SBA-15 are connected to assemble photofunctional hybrids by bridging lanthanide ions (Gd3+, Eu3+) through coordination bonds. The organically functionalized mesoporous SBA-15 are synthesized by co-condensation of tetraethoxysilane (TEOS) and modified by organic coupling agent 3-methacryloxypropyltrimethoxy-silane (denoted as MPTMS) in the presence of Pluronic P123 surfactant as a template. Europium polyoxometalates (Na9EuW10O36·32H2O, abbreviated as Na9EuW10) are encapsulated into the composite host through an ionic liquid (1-methyl-3-(trimethoxysilylpropyl) imidazolium) as a double linker, which is fixed on the surface of mesoporous SBA-15. The detailed physical characterization of these photofunctional hybrids are characterized by Fourier Transform Infrared (FTIR), X-ray diffraction (XRD), Thermo-gravimetric Analysis (TGA), Transmission Electron Micrographs (TEM), N2 absorption and desorption and luminescent performance. It is worth pointing out that some hybrids possess high luminescent output (quantum yields) and long decay time (reaching the millisecond scale) and cool-white light (from CIE diagrams). The research provides a strategy to assemble multi-component hybrids to realize the cool-white integration.
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高影响因子
ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Tianhong Liu,Ziyi Xu,Shuiyuan Zhang,Long Yu,Junting Mo,Mingtai Sun,Suhua Wang
Background Trace water contamination in organic solvents severely hampers chemical synthesis, pharmaceutical manufacturing, and electronic device fabrication; however, existing detection methods lack portability, adequate sensitivity, or stability. While MOF-based fluorescent sensors show promise, most are limited by single-signal outputs, weak anti-interference capability, and poor solvent tolerance. Results To address these challenges, we report an amino-functionalized europium-doped zirconium MOF (Eu@MOF-NH 2 ), synthesized via a one-step solvothermal method, serving as a robust ratiometric fluorescent probe for trace water detection. The material exhibits dual emissions: ligand-based (435 nm) and Eu 3+ -centered (614 nm). Upon water exposure, strong hydrogen bonds with the ligand activate intramolecular charge transfer (ICT) to intensify the blue emission. Concurrently, high-frequency O–H vibrational coupling quenches the red emission by blocking ligand-to-metal energy transfer, causing a rapid (<30 s) pink-to-blue visual transition. The fluorescence intensity ratio (I 435 /I 614 ) demonstrates excellent linearity with water content (0–10% v/v) and achieves ultralow limits of detection in ethanol (0.1643%), THF (0.0311%), methanol (0.3355%), and acetonitrile (0.0148%). Furthermore, this probe maintains consistent sensing performance across 11 diverse organic solvents with highly varying polarities. Integrated with a smartphone-assisted RGB colorimetric platform based on the blue-to-red intensity ratio, Eu@MOF-NH 2 enables portable, on-site, and quantitative visual detection. Significance This work overcomes the traditional limitations of sensitivity and stability, providing reliable material design and sensing strategies for industrial trace water monitoring and quality control.
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高影响因子
JOURNAL OF LUMINESCENCE
·
2020
·
IF 3.28
Chao Bai,Feng-Han Wei,Huai-Ming Hu,Lei Yan,Xiaofang Wang,Gang-Lin Xue
Herein the novel luminescent europium(Ⅲ) hybrid material (denoted as Eu(tta) 3 cptpy-TiO 2 ) was designed and synthesized. With the coordination interaction between europium(Ⅲ) ions and the organic ligands, the as-synthesized Eu(tta) 3 (H 2 O)(EtOH) complex was covalently grafted to the titania host backbone. The materials were characterized by FT-IR and Raman spectra , 13 C SSNMR, X-ray diffraction, SEM, XPS , thermogravimetric analysis and photoluminescence spectra . The results reveal that Eu(tta) 3 cptpy-TiO 2 possesses the combined superior properties of the complex and the inorganic matrix, which not only realized better thermal stability but also obtained more excellent luminescence performance than that of the complex. Moreover, this material performs reasonably long lifetime of 1.02 ms because of the efficient energy transfer from the ligands or titania host to Eu 3+ ion. Furthermore, the application in detecting organic solvents and metal ions was investigated systematically. Meanwhile, Eu(tta) 3 cptpy-TiO 2 presents superior detection for nitrobenzene molecule and Fe 3+ ion. In addition, the limit of detection (LOD) of Eu(tta) 3 cptpy-TiO 2 for nitrobenzene molecule and Fe 3+ ion can be counted as 6.162 × 10 −5 M and 2.371 × 10 −5 M, respectively. The results demonstrate that Eu(tta) 3 cptpy-TiO 2 bears potential for highly sensitive sensing of nitrobenzene and Fe 3+ ion.
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高影响因子
Journal of Food Measurement and Characterization
·
2023
·
IF 3.4
Jie Mingsha,Lan Shengkai,Lu Congran,Guo Ruipeng,Qu Xuanxuan,Zheng Qiuchen,Xiang Qisen
Considering the excessive residue and serious harm of sulfamethazine (SM 2 ), the sensitive determination of SM 2 has attracted wide attention in ensuring food security and human health. Herein, using the unique fluorescence property of aggregation-induced emission (AIE), we reported a simple and sensitive detection approach of SM 2 residues in milk and drinking water. Firstly, luminol-europium nanocomposites (luminol-Eu NCs) were self-assembly synthesized via AIE strategy. Then, the fluorescence emission of luminol-Eu NCs could be quenched by SM 2 due to the inner filter effect (IFE). As a result, the fluorescent sensor based on luminol-Eu NCs displayed a wide linear response for SM 2 in a concentration range of 0.1–500 µmol/L and a detection limit of 90 nmol/L was obtained. Furthermore, semi-quantitative detection of SM 2 on test papers was realized via a smartphone-assisted visual sensing device. Therefore, this fluorescent sensor shows a potential value in the field of food safety assessment. Graphical abstract
An aggregation-induced emission fluorescent
sensor based on luminol-europium nanocomposites was developed and applied for
sensitive and visual detection of sulfamethazine in milk and drinking water.
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高影响因子
FOOD CHEMISTRY
·
2021
·
IF 7.514
Ziyu Gan,Xuetao Hu,Xuechao Xu,Wen Zhang,Xiaobo Zou,Jiyong Shi,Kaiyi Zheng,Muhammad Arslan
Residual tetracycline (TC) in animal food caused by abuse of antibiotics leads to many chronic diseases in the human body. The development of a simple and on-site visualization method for TC detection is need of the hour. Herein, a fluorescent europium-based metal–organic framework (Eu-MOF) sensor for visual and rapid detection of TC was developed. Eu-MOF displays a red emission being excited at 260 nm. Upon exposure to TC, significant fluorescence quenching was observed due to the inner filter effect and photoinduced electron transfer. Moreover, the developed sensor was applied for the detection of TC in milk and beef samples with recoveries of 96.1% to 106.3%, respectively. More importantly, a portable test strip based on Eu-MOF was manufactured. It is a highly selective and sensitive portable device for TC detection. The results can be distinguished immediately by naked eyes, making it become an excellent choice to detect TC in real-time application.
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PubMed
高影响因子
JOURNAL OF LUMINESCENCE
·
2020
·
IF 3.28
Yingjian Sun,Qingfeng Li,Shuai Wei,Ruichun Zhao,Jingfen Han,Guichen Ping
Herein we manifested an alternative route to synthesize water-soluble biopolymers from natural polysaccharides by chemically modifying aminated curdlan with succinic acid (SA) or ionic liquid (IL), and a series of flexible self-standing films were made from the homogeneous solutions consisting of europium(III) complexes in nanoclay and the above biopolymers under aqueous conditions, which are transparent and luminescent . Compared to film without curdlan derivatives, the presence of water-soluble decorated curdlan can significantly enhance the luminescence efficiency and improve photoluminescent stability of the films. Enhancements of the luminescent intensity were further remarkable when exposing the films to triethylamine vapor, while obvious luminescence quenching occurred upon exposure to HCl vapor. The films are encouraging optoelectronic detectors and vapor-sensitive luminescent sensors.
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高影响因子
MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 2
·1-8
·
IF 6.232
Chen Lili,Xu Hui,Wang Li,Li Yong,Tian Xike
A novel ratiometric fluorescent probe for the determination of oxytetracycline (OTC) was developed. The method is based on the use of adenosine monophosphate/Eu(III) nanoscale coordination polymers doped with carbon dots (CDs) (CD@AMP/Eu NCPs). These were fabricated by self-assembly of Eu 3+ and AMP on the surface of CDs containing large amounts of hydroxyl and carbonyl groups. Under the excitation at 310 nm wavelength, the doped NCPs display strong pink emission of Eu 3+ at 615 nm and blue emission of the CDs at 430 nm on exposure to OTC. The ratio of fluorescence intensity (F 615 /F 430 ) of such NCPs displays excellent linear relationship with OTC concentration ranging from 0.2 to 60 μM and the limit of detection (LOD) is 25 nM (3σ). The doped NCPs were evenly immobilized on common filter paper to prepare a visual ratiometric probe for the determination of OTC. Assisted by a digital camera with an APP color detector, the paper-based test strip was applied for the quantitative determination of OTC with a LOD of 0.5 μM and a wide linear scope of 1–100 μM. The method was applied to the determination of OTC in milk samples.
Schematic representation of the principle for oxytetracycline (OTC) determination using carbon dots (CD)@adenosine monophosphate (AMP)/Europium (Eu 3+ ) paper-based ratiometic probe.
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PubMed
高影响因子
Journal of Physical Chemistry C
·
2024
·
IF 3.3
Faming Xia,Hongbo Li,Rao Wu,Xuelian He,Xuejiao J. Gao,Junnan Li,Shengliang Zhong
Integrating nanomaterials with different properties into a single nanoplatform is an ingenious strategy to obtain multifunctional nanocomposites. Herein, we report an experimental strategy to encapsulate a two-dimensional structured vanadium sulfide (VS2) in a europium-based hyaluronic acid coordination polymer to obtain a high photothermal conversion efficiency nanocomposite (VS2@EuCP) while addressing the limitations of VS2 due to hydrophobicity for application under physiological conditions. The photothermal conversion efficiency of VS2@EuCP nanoparticles under 980 nm (0.5 W/cm2) laser irradiation was as high as 49.2%, and the material exhibited excellent resistance to photobleaching. The intrinsic paramagnetism, strong and broad absorbance in the near-infrared region, and downconversion fluorescence properties of VS2@EuCP materials enable VS2@EuCP to perform four-mode imaging functions, namely, conventional downconversion fluorescence imaging, magnetic resonance imaging, photoacoustic imaging, and photothermal imaging. This highly integrated functional VS2 nanocomposite structure has a promising future in the field of contrast-guided applications of photothermal materials.
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Lin-Lin Zhang,Zeng Chen,Li Li,Wuying Yang,Dan Wang,Yanping Hong,Kaijie Tang,Jiaxin Hong,Lu-Ying Duan,Limin Lu
Developing a multifunctional sensor that can detect food-related multi-analytes is significant for food safety but remains challenging due to the difficulty of integrating multiple functions into one sensor. Herein, a dual-luminescent europium metal-organic framework (EuMOF) was elaborately synthesized through a simple self-assembly process, during which Eu 3+ coordinated with 2-hydroxyterephthalic acid (HTPA) and 1,10-phenanthroline that delivered strong characteristic fluorescence of HTPA and Eu 3+ . The resultant EuMOF exhibited good detection performance toward Sn 4+ and amitraz with different response behaviors. As for target Sn 4+ , the remarkably enhanced fluorescence from HTPA was observed and the fluorescence for Eu 3+ decreased significantly, which was attributed to the structural disintegration of EuMOF caused by Sn 4+ . Whereas, the presence of amitraz weakened both luminescence of HTPA and Eu 3+ owing to the synergistic function of inner filter effect and photoinduced electron transfer. Furthermore, an intelligent and miniature sensor that incorporated EuMOF-based test paper with color recognition application was exploited for portable visual analyzing Sn 4+ and amitraz in real samples, affording great possibilities for on-site monitoring of food hazards.
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PubMed
高影响因子
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