INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Wenxue Wang,Rong Fan,Ming Zhu,Rui Zhang,Siyue Yuan,Pengtao Liu
Developing sensitive and reliable methods for detecting antibiotics in water solutions is essential for protecting public health and the environment. Here, we report a novel fluorescent film with superior mechanical properties and detection response to ciprofloxacin (CIP), achieved through the in-situ growth of europium-based metal-organic frameworks on TEMPO-oxidized cellulose nanofibrils (TOCNF). Firstly, Eu(III) and 2,6-pyridinedicarboxylic acid (DPA) served as precursors, and a simple self-assembly strategy was employed to grow the composite film material (Eu-DPA@TOCNF) in situ on TOCNF, which exhibited characteristic emission peaks. Benefiting from the growth balance and control of Eu-DPA by TOCNF, the sensor based on Eu-DPA@TOCNF showed higher stability and practicability, allowing sensitive and selective detection of CIP, with a good linear relationship in the range of 0–200 μM, showing an inverse relationship between the fluorescence intensity at 619 nm and CIP concentration. The quenching mechanism of CIP on Eu-DPA@TOCNF could be attributed to the combined effects of both static and dynamic quenching processes. Consequently, the Eu-DPA@TOCNF fluorescent film provides a novel strategy for developing pollutant detection sensors based on fluorescent specificity.
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ACS Applied Polymer Materials
·
2025
·
IF 4.7
Shijie Liao,Zhou Li,Lumin Ren,Tengfei Lin,Cong Lin,Chunlin Zhao,Min Gao,Xiao Wu
The coordination of multiple luminescent centers in a simple and efficient way is a difficult challenge for realizing the tunable multicolor function of fluorescent hydrogels. In this work, we synthesized a fluorescent hydrogel with multicolor conversion via a “one-pot method,” which greatly simplifies the tedious steps of preparing fluorescent hydrogels. The luminescence intensity and color of the synthesized DPA-Eu/TPE@PVA hydrogel can be modulated by various stimuli, such as the excitation wavelength, pH, and presence of Fe3+ ions. The entire work centers on the rational introduction of the light-emitting molecule tetrakis(4-hydroxyphenyl)ethylene (TPE-4OH) and the lanthanide ionic complex 2,6-pyridinedicarboxylic acid-Eu (DPA-Eu) into the poly(vinyl alcohol) (PVA) polymer network. Since the luminescence mechanisms of these two molecules differ, with the former emitting light with the aid of the aggregation-induced emission (AIE) effect and the latter emitting light through energy transfer via metal dynamic coordination bonds, individual luminescent molecules can be controlled independently under specific stimuli. The realization of this tunable multicolor fluorescence function has contributed to its application in fields such as sensors, probes, and information encryption.
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JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Boyu Yang,Luning Sun,Zheng Peng,Qing Zhang,Mei Lin,Zhilin Peng,Jue Yang,Lan Zheng
Rare earth elements are integral to modern technology, but their increasing environmental distribution due to anthropogenic activities poses potential health risks to humans. This study utilized zebrafish as a model to assess developmental and locomotor performance effects of europium and samarium. Exposure to Eu or Sm induced a reduction in heart rate, growth inhibition, and morphological deformities. RNA-Seq revealed gene expression alterations linked to critical biological processes and functions following Eu or Sm exposure. Impaired organogenesis in liver and exocrine pancreas, evident through fluorescence imaging, was confirmed transcriptionally. Exposure to Eu or Sm significantly impaired the burst and spontaneous swimming behaviors of zebrafish larvae, characterized by pronounced reductions in movement distance, frequency, and velocity. These observations indicate severe locomotor dysfunction in zebrafish exposed to Eu and Sm. The comprehensive downregulation of the oxidative phosphorylation pathway is likely a primary factor contributing to these motor impairments. Apoptosis induced by Eu and Sm, confirmed through acridine orange staining, was accompanied by the upregulation of the intrinsic apoptosis pathway. Our findings contribute critical insights into the health risks of rare earth elements, informing risk assessment and management strategies.
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INORGANICA CHIMICA ACTA
·
2025
·
IF 3.2
Zhi Shen,Qi-Yang Li,Lin-Xi Qin,Meng-ting Fan,Qiang Zhao
In order to better study the properties of rare earth europium complexes in terms of fluorescence and probes, in this work, 5-(4-carboxyphenoxy)isophthalic acid (H 3 cpipa) and rare metal ion Eu 3+ were used to synthesize metal complex by solvothermal reaction. Then complex [(Eu 2 (cpipa) 2 ·4H 2 O)·8H 2 O] n (1) was synthesized. Data on the structure acquired via an X-ray single-crystal diffractometer indicates that complex 1 is a three-dimensional network structure with a hollow structure. Moreover, solid-state fluorescence tests were carried out on H 3 cpipa and complex 1 . Fluorescence recognition studies were conducted on complex 1 in dispersed systems. The solid-state fluorescence results show that complex 1 has excellent fluorescence properties, with higher fluorescence intensity than the ligand, and it exhibits the bright characteristic red light of europium under fluorescent lamp. Fluorescence recognition studies have shown that complex 1 in dispersed systems serves as a fluorescent probe for both solvent molecule recognition and cation recognition. In solvent molecule systems, complex 1 exhibits good recognition of acetone, while in cation systems, complex 1 shows good selectivity for Fe 3+ ions
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OPTICAL MATERIALS
·
2024
·
IF 3.8
Zhuoyuan Li,Yulin Wang,Jinting Chen,Li Zhang,Yongbiao Hua,Donglan Huang,Huishi Guo,Xiuzhen Qiu
Tetracycline (TC) is a typical emerging pharmaceuticals and personal care products (PPCPs) pollutants in the environment. However, TC residues cause severe effects on human health. It is crucial to exploit simple, rapid and sensitive methods to detect TC in water samples. A ratiometric fluorescent probes (CDs-Eu 3+ ) is constructed using carbon dots (CDs) and europium ions (Eu 3+ ) for the visual detection of tetracycline (TC). Under 390 nm excitation, CDs-Eu 3+ shows a strong yellow fluorescence at 545 nm and a weak red fluorescence at 619 nm, respectively. In the presence of TC, the fluorescence intensity at 545 nm decreased while the fluorescence intensity at 619 nm increased, which attributed to the internal filtering effect (IFE) and “antenna effect”, respectively. Sensing performance of CDs-Eu 3+ probes is further evaluated with respect to various conditions, including salt concentration, Eu 3+ concentration, pH, and reaction time. Results reveal that the proposed ratiometric fluorescent probes exhibits a specific recognition ability toward TC. An excellent linear relationship is observed between the fluorescence intensity ratio (F 619 /F 545 ) and TC concentrations (1⁓100 μM), with a low detection limit (LOD) of 31 nM. The solution (CDs-Eu 3+ -TC) color gradually changes from yellow to red after adding TC. The probes are successfully applied to determine TC in water with recoveries of 85.43⁓97.53%. Finally, a fluorescent test strip is prepared and used for rapid visual semi-quantitative TC detection.
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SPECTROSCOPY LETTERS
·
2025
·
IF 1.6
Yuting Jiang,Deyan Tai,Zhiyuan Xiao,Jinshui Liu
A ratiometric luminescent probe for detecting Bi(III) in water using a functionalized Eu(III) coordination polymer was developed. The raw materials guanosine monophosphate (GMP), Eu(III), and 2,6-pyridine dicarboxylic acid (DPA) were used to synthesize the GMP-Eu-DPA polymer, which contained Eu(III) coordinated with GMP and DPA and gave red emission at a wavelength of 614 nm when excited at a wavelength of 282 nm. Adding Bi(III) decreased the intensity of luminescence of the GMP-Eu-DPA coordination polymer at 614 nm and caused a GMP–Bi complex that strongly luminesced at 373 nm under excitation at 282 nm to form. Under optimal conditions, the luminescence intensity ratio I373/I614 had a good linear relationship with the Bi(III) concentration in the range 1.0–230 μM, and the detection limit was low (0.6 μM). The dual emission reverse rate of change luminescent probe can eliminate environmental influences, making the proposed detection method highly selective. This method has been successfully used to detect Bi(III) in water samples.
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TALANTA
·
2013
·
IF 3.498
Lin Zhang,Lu Tian,Zhiqiang Ye,Bo Song,Jingli Yuan
By using a visible-light-excited ternary Eu 3+ complex, BHHBCB-Eu 3+ -BPT (BHHBCB: 1,2-bis[4′-(1“,1“,1“,2“,2“,3“,3“-heptafluoro-4″,6″-hexanedion-6″-yl)-benzyl]-4-chlorosulfobenzene; BPT: 2-( N , N -diethylanilin-4-yl)-4,6-bis(pyrazol-1-yl)-1,3,5-triazine), as a luminophore, two kinds of novel visible-light-excited europium materials, the silica-encapsulated BHHBCB-Eu 3+ -BPT (Eu@SiO 2 ) nanoparticles and BHHBCB-Eu 3+ -BPT-conjugated bovine serum albumin (BSA–BHHBCB-Eu 3+ -BPT), were prepared for biolabeling and time-resolved luminescence cell imaging applications. The Eu@SiO 2 nanoparticles, prepared by the copolymerization of 3-aminopropyl(triethoxy)silane–BHHBCB-Eu 3+ -BPT conjugate, free 3-aminopropyl(triethoxy) silane and tetraethyl orthosilicate in a water-in-oil reverse microemulsion , are monodispersed, spherical and uniform in size, and strongly luminescent with an excitation peak at ∼400 nm and a long luminescence lifetime of 346 μs. The BSA–BHHBCB-Eu 3+ -BPT, prepared by covalent binding of BHHBCB-Eu 3+ -BPT to BSA, shows also strong visible-light-excited luminescence with a excitation peak at ∼400 nm and a long luminescence lifetime of 402 μs. The two materials were used for labeling transferrin and folic acid . Using the time-resolved luminescence imaging of living HeLa cells, the cell-surface receptors of transferrin and folic acid were successfully visualized by the prepared biolabels based on the ligand–receptor affinity binding interaction. The results demonstrated the feasibility of the new materials as visible-light-excited biolabels for the time-resolved luminescence cell imaging.
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MATERIALS & DESIGN
·
2022
·
IF 9.417
Zi-You Ding,Qing-Guo Xing,Yi-Ran Fan,Qi-Fa Song,Chun-Hui Song,Yingchao Han
Nano calcium phosphate (nCaP), a bone mineral in mammals, shows a promising prospect in biomedicine. Herein, we report a biomimetic mineralization strategy, based on stoichiometric polyacrylic acid (PAA) complexation-precipitation process, to facilitate the development of nCaP as bioimaging agents. As a result, the monodisperse and sub-10 nm europium-doped calcium phosphate nanodots (PAA-Eu:CaP NDs) is controllably obtained with enhanced fluorescence properties, tumor passive targeting and bioimaging ability. Compared with europium-doped calcium phosphate nanoparticles (Eu:CaP NPs), the fluorescence emission, quantum yield and lifetime of PAA-Eu:CaP NDs are significantly improved up to 3.84, 4.48 and 5.59 times, respectively. Deriving from the synergy of surface effect and organic/inorganic hybrid crystal field effect, such CaP matrix brings to local asymmetry environment and distinguished anti-quenching for Eu 3+ ion. The strongest radiance signal is improved to 117 % for in vivo imaging; moreover, the tumor accumulation is obviously increased to 5.15 times, and 7.09 times for tumor permeability. The accumulation is decreased 80.2 %, 79.4 % and 70.2 % in liver, spleen and lung suggesting lower clearance by mononuclear phagocyte system, while it’s increased up to 15.4 times in kidney indicating higher renal clearance. Eventually, it’s convinced that this study can provide help for promoting CaP application in nanomedicine.
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高影响因子
Science China-Chemistry
·
2013
·Vol. 57
·期 2
·243-247
·
IF 1.327
Zhang XuePeng,Zhang GuoQing
Poly(ethylene glycol)-modified β-diketone macroligand is developed to sensitize europium(III) ions in water. High luminescence intensity characteristic of Eu 3+ was achieved due to spontaneous formation of micelle-like structure in which the hydrophobic core prevents luminescence-quenching by water molecules. The pH is found to induce a quantitative ratio change in two fluorescence bands from both ligand and Eu 3+ .
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ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
·
2016
·Vol. 22
·期 8
·1147-1155
·
IF 1.87
Habimana Fabien,Huo Yanxia,Jiang Sai,Ji Shengfu
Europium metal organic framework (Eu-MOF) was synthesized using Europium as metal ion center and 1,3,5-trimesic acid (H 3 BTC) as organic ligand under hydrosolvothermal conditions. The dynamic performance of the Eu-MOF material in adsorption desulfurization processes was investigated using a solution of thiophene/n-octane as sulfur containing quality model oil. The adsorption desulfurization kinetics equations and adsorption desulfurization isotherms of Eu-MOF were also studied. The results have shown that Eu-MOF catalyst has very good adsorption desulfurization abilities under optimum desulfurization conditions of m adsorbent : m model oil ratio of 1:100 and reaction temperature of 303 K. After 4 h of desulfurization reaction, the adsorption rate and the adsorption desulfurization capacity has reached 64.70% and 24.59 mgS/gMOF respectively. The Eu-MOF adsorption desulfurization process of thiophene on Eu-MOF fits well the quasi two level dynamic model using Langmuir isotherm, Freundlich isotherm and Dubinin–Radushkevich isotherm equations. The Dubinin–Radushkevich isotherm can be a suitable description of adsorption process for Eu-MOF absorbent on thiophene/n-octane mode oil. However the Freundlich isotherm equation model with fitting R
2 value closer to 1, can be a better description for the adsorption of thiophene. The adsorption of thiophene over Eu-MOF absorbent has two types of adsorption that occur simultaneously. These are the monolayer physical adsorption and the multilayer chemical adsorption.
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Journal of Materials Chemistry C
·
2023
·Vol. 12
·期 4
·1430-1439
·
IF 6.4
He Yuan,Shilin Jin,Song Zheng,Rong Xie,Tao Pang,Bin Zhuang,Feng Huang,Daqin Chen
In the last five years, significant progress has been achieved in incorporating trivalent lanthanide (Ln3+) ions into CsPbX3 halide perovskite nanocrystals (PeNCs), combining superior optoelectronic performance of semiconductors with abundant Ln3+: 4f–4f transitions. However, doping divalent europium (Eu2+) with parity-allowed 5d–4f transition inside CsPbX3 remains unexplored. Herein, we develop a new class of dual-emitters based on Eu2+-doped CsPbCl3 PeNCs. Narrowband violet emission and broadband orange emission assigned to the respective exciton recombination and Eu2+: 5d → 4f transition are concurrently observed. Steady/transient-state photoluminescence (PL) spectra, time-resolved PL (TRPL) spectra and femtosecond transient absorption (fs-TA) spectra evidence independent dual-emissions without exciton-to-Eu2+ energy transfer, which is attributed to the preferred location of Eu2+ on the surface of CsPbCl3. As a consequence, exciton-longitudinal optical phonon interplay and surface ligand–Eu2+ coupling in the as-prepared Eu:CsPbCl3 PeNCs are verified based on temperature-sensitive spectroscopic analyses, together with first-principles density functional theory (DFT) calculations and crystal-field calculations. These findings provide fundamental insights into the design of novel lanthanide-doped halide perovskite emitters for versatile optoelectronic applications.
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ACS Applied Polymer Materials
·
2025
·
IF 4.7
Chong Wang,Jiayu Liu,Bo Liu,Jiamin Wu,Gengsheng Weng
A Eu3+-containing elastomer (PAMA-Eu), prepared by copolymerizing acrylic acid, 2-(2-methoxyethoxy)ethyl methacrylate, and 2-(acetoacetoxy)ethyl methacrylate (AAEM), was reported. In this system, the Eu3+ ions and the fluorescent ethyl acetoacetate (EAA) ligand from AAEM serve as dual emission centers, yielding luminescence colors tunable by controlling the Eu3+–EAA coordination. The Fourier transform infrared (FT-IR) analysis confirmed the coordination of Eu3+ ions with the EAA and COOH groups. The change in absorption intensity at larger wavelengths of the UV–vis spectra demonstrates the formation of Eu3+ coordination cross-linking within the polymer network. The EAA ligand as a binding motif on the AAEM monomer is blue-emissive in the absence of Eu3+ ions under 365 nm UV light. A small amount of Eu3+ ions (Eu:AAEM molar ratio ≤0.025:1) can significantly change the emission intensity and the luminescence color of EAA. Upon introducing Eu3+ ions, the luminescence color of the elastomer under 254 nm UV light shifts sequentially from blue to teal, yellow, and ultimately to a Eu3+-dominated red, whereas under 365 nm UV light, the luminescence color changes from blue to teal, green, and finally to yellow. At moderate and high Eu3+ concentrations, the elastomer shows quite different luminescence colors under 254 and 365 nm UV light. This broad and easily tunable fluorescence color enables the application of the PAMA-Eu elastomer in fluorescent anticounterfeiting. By incorporating Tb3+ ions in the PAMA-Eu elastomer, bimodal anticounterfeiting controlled by both excitation wavelength and temperature is achieved. We expect that this coordination-manipulated dual emission center design strategy will provide opportunities for manufacturing anticounterfeiting fluorochromic polymers.
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