ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Liting Xu,Fengyun Shi,Jinghua Zhao,Limin Wu,Hongkun Li,Yi Li,Wei Liu,Yonggang Yang
A coordination complex, Eu(C12C12dbm)3(phen), with strong emission and a high quantum yield (QY ∼ 51.9%) was synthesized. The EuIII complex, as a fluorescent emitter, was embedded in cholesteric liquid crystal polymer networks (CLCNs). A series of free-standing EuIII-CLCN films were obtained, generating a typical sharp emission band corresponding to the EuIII complex. Tunable handedness of circularly polarized luminescence (CPL) with high |glum| values (up to 0.63) was observed. A series of CPL-active CLCN-coated PET films were also prepared (|glum| values up to 0.63), which can be used for large-area preparations. Moreover, by stacking an emitter-embedded PMMA layer and a CLCN layer, a composite system was built, and a large |glum| value (∼1.42) was achieved. Fluorescence patterns were prepared, and distinct images of CLCN films were recognized under both daylight and UV light. This work not only demonstrated that coordination compounds could be incorporated with CLCN films to prepare CPL-active materials with high |glum| values but also provided a new perspective for emissive CLCN materials used for anticounterfeiting and encryption.
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高影响因子
MATERIALS RESEARCH BULLETIN
·
2017
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IF 2.446
Yaoming Xiao,Gaoyi Han,Yunzhen Chang
Ytterbium and europium ions co-doped stannic oxide nanofibers ( SYE NFs) are prepared by a simple electrospun method, which are applied in the photoanode for the dye-sensitized solar cell (DSSC). Comparing to the pure TiO 2 photoanode, the TiO 2 photoanode with SYE NFs demonstrates a broadened light absorption range and an enhanced electrons transport rate. The DSSC based on the TiO 2 photoanode with SYE NFs achieves a greatly improved short-circuit current density, leading to an enhanced photoelectric conversion efficiency of 8.74% under full sunlight illumination (100 mW cm −2 , AM 1.5 G), which is almost 20.89% higher than that of the DSSC based on the pure TiO 2 photoanode without SYE NFs (7.23%). Moreover, the novel strategy of preparation SYE NFs is an universal method to adjust rare-earth species to achieve other materials with up- or down-conversion functions.
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RSC Advances
·
2016
·Vol. 6
·期 26
·21725-21734
·
IF 3.289
Kun Ge,Wentong Sun,Shaohan Zhang,Shuxian Wang,Guang Jia,Cuimiao Zhang,Jinchao Zhang
Applications of europium-doped NaYF4 (NaYF4:Eu3+) nanoparticles in biomedical fields will inevitably increase their exposure to humans, therefore, the assessment of toxicities must be taken into consideration. It was reported that NaYF4:Eu3+ nanoparticles could accumulate in the bone. However, the potential effect of NaYF4:Eu3+ nanoparticles on bone marrow stromal cells (BMSCs) has not been reported. In this study, NaYF4:Eu3+ particles with diameters of 50 and 200 nm (NY50 and NY200) were prepared and characterized by scanning electron microscopy, transmission electron microscopy, powder X-ray diffraction, photoluminescence excitation and emission spectra, and dynamic light scattering. The cytotoxicity of NaYF4:Eu3+ particles on BMSCs and the associated mechanisms were further studied. The results indicated that NaYF4:Eu3+ particles could be uptaken into BMSCs and primarily localized in the lysosome. NaYF4:Eu3+ particles effectively inhibited the viability of BMSCs in a size-dependent manner at 24 and 48 h. After cells were treated with 20 μg mL−1 of NY50 and NY200 for 24 h, NaYF4:Eu3+ particles could trigger cell necrosis in a size-dependent manner. The percentage of necrotic BMSCs (PI+/Annexin V−) increased to 15.93 and 14.73%. Necrosis was further verified by increased lactate dehydrogenase leakage. Meanwhile, both NY50 and NY200 induced an increased cell population in the S and G2/M phases. The following mechanism is involved in NaYF4:Eu3+ particle-induced BMSCs necrosis: the NaYF4:Eu3+ particles lead to lysosomal rupture by lysosomal swelling, permeabilization of lysosomal membranes, and increased cathepsins B and D. In addition, NaYF4:Eu3+ particle-induced BMSCs necrosis is also directly caused by the overproduction of ROS through injury to the mitochondria. This study provides novel evidence to elucidate the toxicity mechanisms for bone metabolism and may be beneficial to more rational applications of these nanomaterials in the future.
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JOURNAL OF LUMINESCENCE
·
2016
·
IF 2.693
Chaolong Yang,Pan Zhang,Hualin Zhou,Jing Xu,Youbing Li,Mangeng Lu,Lei Lei,Qiang Zhang,Yi Zhang,Shaopeng Chen
A series of environment friendly Eu/PHB fluorescent films through doped the Eu-complex precursor Eu(TTA) 2 (Tpy-OCH 3 )(2H 2 O) into polymer matrices poly-β-hydroxybutyrate (PHB) with doping percentage at 1, 3, 5, and 7 (mass) were designed, fabricated and characterized. TGA and PL results indicated the Eu-complex precursor was immobilized in PHB matrix through the interaction between the Eu-complex. DSC results indicated the crystallinity of Eu/PHB films decreased with the increase of Eu-complex doping percentage. The emission spectra of the Eu-complex and Eu/PHB films recorded at room temperature exhibited the characteristic bands arising from the 5 D 0 / 7 F J . The fact that the quantum efficiencies ( η ) of the doped film increased significantly revealed that the PHB matrix acts as an efficient co-sensitizer for Eu 3+ ions luminescent center and therefore enhances the quantum efficiency of the emitter 5 D 0 level. In particular, all Eu/PHB films can be excited by visible light (410 nm), and also showed good photoluminescent properties. So the new Eu/PHB fluorescent films showed considerable promise for polymer light-emitting diode, active polymer optical fiber and biomedical analysis applications.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jiazhen Wang,Ting Du,Menghuan Sun,Yiya Ping,Ruilei Yang,Sitong Zhang,Guangjun Huang,Jianlong Wang
Perishable food spoilage poses an increasing threat to public health, necessitating intelligent systems that integrate real-time freshness monitoring with active preservation. Herein, we constructed a smart dual-mode (fluorescence-colorimetric) sensor through coordination-driven assembly of europium ions (Eu 3+ ) with natural anthocyanin pigment (beet red, BR) forming flower-like nanostructures (Eu-BR) with photodynamically enhanced antimicrobial activity. Capitalizing on chromophore properties of BR and antenna effect of Eu 3+ , Eu-BR achieves ratio fluorescence/colorimetric sensing of pH to detect food freshness. The hierarchical material architecture amplified photodynamic potential of Eu-BR with enhanced light harvesting and electron transfer, achieving higher bacterial inhibition of S. aureus ATCC 29213 (99.62 %) and E.coli O157:H7 (99.39 %) under visible light-induced. Leveraging the biochemical principle that microbial metabolism generates volatile amines during meat decomposition, we developed a paper-based smart Eu-BR labels, achieving tripartite freshness classification of meat (fresh → medium fresh → spoilage) by detectable variations in fluorescence intensity and colorimetric responses. Notably, Eu-BR-functionalized labels achieve active light-activated preservation, effectively inhibiting bacterial growth (54.18 ± 1.9 % within 48 h). This mitigates spoilage indicators in shrimp and meat-including TVB-N accumulation, pH fluctuations, and weight loss-thereby extending product shelf-life.
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RSC Advances
·
2025
·Vol. 15
·期 32
·25885
·
IF 4.6
Qiuping Li,Hongxia Ouyang,Xinghui Yang,Qi Wang,Yonghong Ding,Haichao Yu,Zhi Rao
Lanthanide organic–inorganic hybrid fluorescent materials are considered as promising candidates for next-generation lighting materials due to their unique optical properties and potential applications. In this work, commercialized silica materials (fumed silica) were selected as the carrier. By means of the bridging function of silane coupling agents, Eu(TTA) 3 (Phen) was covalently grafted onto the surface of fumed silica to synthesize lanthanide hybrid phosphors. Subsequently, the phosphor was dispersed into the MMA polymerization system, and a monolithic fluorescent organic glass was fabricated via in situ polymerization. Both the obtained europium hybrid phosphor and the europium complex-doped organic glass exhibited intense red fluorescence under UV light and possessed the characteristics of broad absorption, narrow emission, and long fluorescence lifetime. The design and synthesis process is straightforward and cost-effective, making this approach highly valuable for the development and advancement of novel rare earth hybrid luminescent materials. A novel Europium organic–inorganic hybrid fluorescent materials with excellent luminescent properties were successfully synthesized using commercialized silica materials as the carrier and PMMA as the matrix.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Shuyuan Guo,Miao Liu,Hanlin Liu,Jingru Mao,Yongfeng Zou,Li-Peng Sun,Yan Huang,Dandan Sun,Jie Ma
A reflective microfiber biosensor with fiber Bragg grating (FBG) is presented for detecting flumequine (Flu) concentration through successive surface modification with polydopamine (PDA) and europium-incorporated covalent organic framework (Eu@COF). The detection mechanism relies on refractive index (RI) changes induced by Flu adsorption, which are monitored by tracking of interference wavelength shifts. Experimental results demonstrate that the sensor exhibits a significant response within a concentration range of 0.1–100 μM, achieving a sensitivity of 0.732 nm/μM in the 0.1–1 μM range with a limit of detection (LOD) of 0.1 μM. Furthermore, the biosensor demonstrates the exceptional specificity for Flu detection among various quinolone antibiotics, while delivering reliable detection in real samples. With the integrated advantages of high sensitivity, superior selectivity, and long-term stability, this sensing platform shows the promising potential for on-site monitoring applications in food safety supervision and veterinary drug residue analysis.
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JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Ruiyu Fu,Jiawei Liu,Yongpeng Ma,Hongbo Li,Xiaoqin Hai,Jiaxiao Niu,Xiaoli Guo,Xin Di
Tetracyclines (TCs) residues pose a significant threat to the aquatic environment and human health, therefore this study aims to develop a simple, rapid, and sensitive TCs detection method. Herein, a dual-responsive gel probe (LDH-CES@N) was designed, consisting of the intercalation of graphene quantum dots into europium-doped layered double hydroxide (LDH). In the presence of TCs, the as-prepared probe exhibited dual emission fluorescence at 504 nm and 616 nm due to the synergistic effect of aggregation-induced emission and antenna effect. Meanwhile, the density functional theory was employed to validate the mechanism underlying TC-induced electron transfer from graphene quantum dots. The dual-signal response fluorescence probe has excellent detection ability of oxytetracycline, including a wide detection range (0–60 μM), low detection limit (0.145 μM), and rapid response time (120 s). Furthermore, combined with the smartphone, a portable and real-time detection platform was established for the visual detection of oxytetracycline in tap water and honey samples with desirable recovery rates (97.8 %-105.4 %). Therefore, this work provides a new strategy for fluorescence detection of trace pollutants, demonstrating considerable practical application potential.
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ANALYTICA CHIMICA ACTA
·
2021
·
IF 6.558
Yu-Fei Zhong,Guang-Ming Bao,Yi-Fan Xia,Xiong-Xin Peng,Jin-Feng Peng,Jia-Xin He,Shuai Lin,Lintao Zeng,Qing Fan,Wei Xiao,Hou-Qun Yuan
An europium functionalized metal-organic fluorescent probe , Eu 3+ @UiO-66-FDC was constructed by post-synthetic modification through coordination interactions. Eu 3+ @UiO-66-FDC displayed high selectivity and sensitivity toward Tryptophan (Trp) among all the 20 natural amino acids and other general compounds in food and biological samples, with a wide linear concentration range (0–1000 μM), low detection limit (0.29 μM), and a rapid response (<1 min). Besides, this probe was utilized to detect Trp in rabbit blood serum and milk samples with good recoveries, which were verified by high-performance liquid chromatography (HPLC). Notably, this fluorescent probe proved to be a recyclable material. Hence, this work provides a reliable and recyclable fluorescent probe applicable toward the detection of Trp in biological fluids and/or food products.
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2021
·
IF 4.098
Wen-Jie Wu,Qi Zhao,Rui Zhou,Ya-Chuan Liang,Wen-Bo Zhao,Chong-Xin Shan
An europium functionalized ZnO quantum dots (QDs) ratiometric fluorescent nanoprobe is designed to establish a real time, on-site visual, and highly sensitive probe method for tetracycline (TC). The yellow-emitting ZnO QDs serves as the internal reference, while the Eu 3+ chelated on the surface of ZnO QDs is used as the signal reporting unit. This nanoprobe exhibits rapid response, excellent selectivity, and high sensitivity with a detection limit of 4 nM in detecting the levels of TC. In addition, fluorescence of the nanoprobe can change from yellow to red as the concentration of TC increases. Thus, naked eye detection of TC was realized using the test paper processed by nanoprobe, followed by RGB value analysis function on the mobile phone APP.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Jiaqi Dang,Yutao Cao,Zengxi Li,Hong Zhao
Hypochlorite (ClO − ) is the most commonly used disinfectant on various occasions, the development of high-performance approaches for the reliable determination of hypochlorite is of great significance in human health and public safety. Moreover, visually analyzing ClO − in the water environment is more convenient. The ratiometric fluorescent approach based on lanthanide-based metal-organic frameworks is an effective way for the detection of ClO − . In this approach, an amorphous europium metal-organic framework with dual ligands was applied to detect ClO − . Amorphous dual-ligand europium-organic frameworks were prepared by using Eu 3+ as metal nodes, 2-aminoterephthalic acid (NH 2 BDC) and enoxacin (ENX) as dual ligands (denoted as amEu-ENX/NH 2 BDC). The amEu-ENX/NH 2 BDC displayed a dual emission derived from NH 2 BDC and Eu 3+ at 427 and 611 nm, respectively. In the presence of ClO − , static quenching weakened the blue fluorescence at 427 nm, while the antenna effect emission from Eu 3+ kept stable, thus a ratiometric fluorescent detection of ClO − was realized with a fast response time of less than 40 s. The synthesized amEu-ENX/NH 2 BDC presented a great detection performance for ClO − with a wider linear concentration range from 0.50 to 15 μM and 15–40 μM. The detection limit was 30 nM (3 σ /k = 3). The color changes of amEu-ENX/NH 2 BDC enabled the concentration of ClO − to be detected by smartphone conversion of RGB. Importantly, the proposed fluorescence sensor can successfully monitor ClO − in real samples.
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DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 17
·5443-5452
·
IF 4
Zhichao Meng,Yan Gao,Ji'an Song,Zelong Jiang,Wei Lv,Qingguang Zeng,Dawei Wen,Tao Hu
Mixed-valence europium-activated phosphors are receiving attention in many fields, such as lighting, anti-counterfeiting, optical recording, encryption, and temperature sensing. However, it remains difficult to construct mixed-valence europium-activated compounds due to the reductive and oxidative synthesis conditions required to obtain Eu2+ and Eu3+ ions, respectively. Herein, mixed-valence Eu2+/Eu3+ was realized in the CaBPO5 built by rigidly connected BO4 and PO4 tetrahedrons by partial Eu3+ → Eu2+ self-reduction in the air atmosphere. Commendably, the CaBPO5:Eu2+/Eu3+ phosphor exhibits excellent ratiometric temperature sensing performance with the maximum absolute and relative sensitivity being as high as 0.184 K−1 and 3.444% K−1 with good signal discriminability, due to the high and low, respectively, temperature-dependence of Eu2+ and Eu3+ emissions. The rapid dropping intensity of Eu2+ in CaBPO5 with increasing temperature was due to the small energy gap (∼0.48 eV) between the Eu2+-5d state and the conduction band. Our work not only provides a novel thermometer candidate but also enlightens researchers to a method of effectively designing new mixed-valence metal-ion activated luminescent thermometers via selective tetrahedrally coordinated rigid crystal structure.
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