MOLECULES
·
2026
·Vol. 31
·期 19
·3412
·
IF 5.1
Xinyao Su,Wen Guo,Qunming Zhou,Tingting Xie,Lingyan Wu,Shangyang Wang,You Fu,Shurong Li,Wei Peng,Peijun Meng
Cancer theranostics urgently demands multifunctional nanomaterials capable of simultaneously enabling high-sensitivity imaging and multimodal synergistic therapy. In this study, a three-layer core–shell nanocomposite, NaYF4:Yb,Tm@NaGdF4:Eu@NH2-MIL-53(Fe), was designed and synthesized. The NaYF4:Yb,Tm nanoparticle core provides upconversion luminescence upon near-infrared (NIR) excitation and can serve as an excitation source for photodynamic therapy. An epitaxially grown NaGdF4:Eu intermediate shell was introduced to enhance luminescence and provide T1-weighted magnetic resonance imaging (MRI) capability. The outermost NH2-MIL-53(Fe) metal–organic framework shell was subsequently coated to provide potential chemodynamic therapy (CDT) capability. The effects of the Eu3+doping concentration, reaction temperature, reaction time, and oleic acid (OA)/1-octadecene (ODE) ratio on the anisotropic growth into a dumbbell-like morphology were examined to determine the optimal conditions. Under the optimal conditions (10 mol% Eu3+, 300 °C, 60 min, OA/ODE = 4:16), core–shell nanocrystals with regular morphology, uniform size, and the strongest upconversion luminescence were obtained. Polyvinylpyrrolidone (PVP)-mediated surface functionalization successfully induced the in situ growth of the NH2-MIL-53(Fe) outer shell, thereby constructing a three-layer core–shell nanocomposite as a potential theranostic platform. Various characterizations confirmed that the resulting composite integrates upconversion luminescence, paramagnetism, and hydroxyl radical generation capability, suggesting potential for NIR-driven dual-modal imaging-guided synergistic therapy.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Hui Liu,Yude Niu,Xuanyi Yuan,Zhanglin Chen,Yuzhen Wang
Optical information encryption has critical importance for protecting property security, thus triggers great demands for exploring multi-color emission luminescence materials. In this work, we proposed a novel strategy for optical information encryption based on the thermal-responsive color-tunable emission phosphors. The information can be carried and enciphered by phosphors, then identified only by simultaneous heating and ultraviolet light irradiation, demonstrating higher security in the application. Given the thermal stability of luminescence and feasible regulation of emission spectra by temperature, we developed various concentrations of europium ions doped ScZr(VO 4 )(WO 4 ) 2 phosphors by introducing vanadate with self-excited emitting performance through co-substitution of [Zr 4+ -V 5+ ] for [Sc 3+ -W 6+ ] in Sc 2 W 3 O 12 negative thermal expansion phosphors. When the temperature increases from 298 K to 523 K, the lattice contraction can be observed due to the transverse vibration of bridging oxygen for [Sc/ZrO 6 ] octahedral and [W/VO 6 ] tetrahedron. As a result, the energy transfer efficiency from [VO 4 ] 3- to Eu 3+ is improved, and the spectra regulation is realized by different responses of green and red emissions to temperature. Under 275 nm excitation, the luminescence color of ScZr(VO 4 )(WO 4 ) 2 : 5 mol% Eu changes from green to white, to orange and to red. Moreover, the color-tunable performance is reversible for alternated heating and cooling cycles. To verify the practicality, simple experiments were designed and successfully executed. It is believed that the ScZr(VO 4 )(WO 4 ) 2 : Eu phosphors can be promising candidates for optical information encryption.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2023
·
IF 3.8
Xinlin Wang,Rudong Zhu,Xiangkui Wang,Fengjiao Liu,Yan Gao,Rongfeng Guan,Yalei Chen
In this paper, the application of metal organic frameworks (MOFs) doped with carbon dots in fluorescence detection was studied.CDs@Eu-MOF/PVDF thin films were prepared by simple solvothermal method, carbon dots modification and in-situ growth process.The structure and morphology of the film was characterized by XRD, SEM, FT-IR and XPS.The results show that CDs@Eu-MOFs membrane has strong red fluorescence, good stability in methanol solvent, and high selectivity and sensitivity to nitrobenzene and 4-nitrophenol.The CDs@Eu-MOFs/PVDF film material can be used to detect nitrobenzene and 4-nitrophenol in methanol solvent and gaseous state. The detection limits of nitrobenzene and 4-nitrophenol in liquid are 0.2807 mg/L and 0.0168 mg/L, and the detection limits of nitrobenzene and 4-nitrophenol in gaseous state are 0.346 mg/L and 0.0136 mg/L.
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Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 19
·7633-7640
·
IF 8.067
Haifeng Sha,Bing Yan
As the basic units of proteins, the importance of amino acids in organisms is self-evident and therefore detection of the concentration of amino acids is significant in monitoring human health. Herein, a dual-responsive Eu3+-functionalized metal–organic framework (MOFs) luminescent film (1@SA) was designed and prepared, which not only realizes the simultaneous detection of aspartic acid (Asp) and arginine (Arg) but also has the possibility of being applied in anti-counterfeiting. A portable film sensor is obtained through the cross-linking and solidification of Eu3+ ions and sodium alginate (SA) hydrogel containing uniformly dispersed MOFs. The MOF used in this work is a zinc metal–organic framework (ZnMOF) comprising uncoordinated carboxyl groups that can provide binding sites for Eu3+ ions. Moreover, it is found that the sensor shows unique fluorescence changes under the stimulation of an acidic environment. Therefore, the quantitative detection of Asp and Arg by 1@SA can be achieved, and optical anti-counterfeiting platforms are also designed according to the diversity of fluorescence changes. The new strategy proposed in this work may broaden the scope of lanthanide fluorescence films used in optical fields.
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ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Yongxiang Wang,Guocan Shen,Ting Tang,Jinming Zeng,Rizwan Ur Rehman Sagar,Xiaopeng Qi,Tongxiang Liang
Electrochromic capacitors are attracting a huge attention due to their dual functions in energy-saving and energy storage. Electrochromic and energy storage performance of the films could be effectively improved through regulating their physical phase and morphology. In the present work, the physical phase and morphology of the WO 3 nanofilms were regulated by doping RE ions (RE = Ce, Eu, Sm, Gd) using one-step hydrothermal technology. The three-dimensional (3D) urchin-like crystal WO 3 nanofilm would transfer into the 3D nest-like WO 3 (WO 3 -RE) nanofilms that consisted of crystal and amorphous phase by doping RE ions. Compared with the pure WO 3 nanofilm, the WO 3 -RE nanofilms exhibited higher optical contrast, faster switching speed, longer cyclic stability, and larger areal capacitance owing to faster ions transfer rate and more stable film structure. The optical contrast of WO 3 -Eu and WO 3 -Sm nanofilms were 76.3% and 73.8% at 633 nm, 75.5% and 74.6% at 900 nm wavelength, respectively. Notably, the WO 3 -Eu and WO 3 -Sm nanofilms could retain 99.6% and 99.1% of their original optical contrasts after 1000 cycles, respectively. Additionally, the areal capacitance of ECDs based on the WO 3 /PB, WO 3 -Ce/PB, WO 3 -Eu/PB, WO 3 -Sm/PB, and WO 3 -Gd/PB were 26.15, 49.27, 58.23, 71.46, and 79.52 mF/cm 2 at 0.3 mA/cm 2 , respectively. ECDs based on the WO 3 -RE/PB are promising for energy-saving and energy storage dual functional smart windows.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2022
·
IF 4.831
Jie Xiong,Yunfang Xiao,Jiaman Liang,Jian Sun,Lixia Gao,Qiuju Zhou,Dan Hong,Kejun Tan
As we all know, excessive hypochlorite will be transformed into highly toxic substances, while insufficient hypochlorite can not completely kill bacteria and viruses in water. Therefore, it is desirable to develop a new analytical method to detect ClO - in environmental water. Here, a novel and simple fluorescence sensor was constructed for monitoring ClO - by an effective strategy. An Acriflavine@lanthanide metal-organic framework (Acr@Eu(BTEC)) was designed by covalently integrating amino-rich dye (Acr) and carboxyl-rich Eu(BTEC) via post-synthesis method. The created fluorescence sensor has two emission centers originating from Acr and Eu(BTEC), respectively. In the presence of ClO - , the strong green fluorescence derived from Acr was significantly quenched, while the invariant red emission from Eu 3+ acted as the reference signal. Thus, Acr@Eu(BTEC) with two emissions was developed as a ratiometric fluorescence sensor for highly sensitive and selective detection of ClO - . The limit of detection (LOD) was as low as 10.75 nM. Moreover, visual detection of ClO - by the naked eyes is feasible with obvious fluorescent color changes from green to orange and then red. This method shows excellent performance in practical application, which suggests that it has great potential in water quality monitoring.
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Lijia Dong,Shengbo Li,Yefei Jin,Baowei Hu,Guodong Sheng
In this paper, CaAl hydrotalcite or hydroxyapatite decorated invasive plant ( Solidago canadensis )-derived biochar were synthesized by co-precipitation and high temperature pyrolysis method. The three composites and bare biochar were characterized by Scanning electron microscopy (SEM), X-ray spectroscopy (EDX), the Fourier transform infrared spectroscopy (FT-IR), X-ray diffractometer (XRD), and X-ray photoelectron spectroscopy (XPS) techniques, and employed to remove Eu(III) from wastewater under a series of environmental conditions. The results indicated that the Eu(III) adsorption on BC@LDH@HAP was higher than that on BC, BC@LDH, and BC@HAP, and belonged to multi-layer adsorption, which was different from the monolayer adsorption of biochar. The adsorption could be fitted best by Langmuir model and the maximum adsorption capacity of Eu(III) on BC@LDH@HAP was up to 714 mg/g at pH ~ 6. The characterization results suggested that this excellent adsorption of BC@LDH@HAP arose from the abundant P-, C-, O-containing functional groups rather than larger specific surface area. The spectra of XPS, FT-IR, and XRD uncovered that the adsorption mechanisms of Eu(III) on BC@LDH@HAP involved surface complexation, ion exchange, and precipitation. Moreover, the absorbed Eu(III) was formed into two precipitate induced by P-containing groups and carbonate groups. This research confirmed BC@LDH@HAP is a promising material for the removal of Eu(III) in wastewater.
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JOURNAL OF LUMINESCENCE
·
2020
·
IF 3.28
Xiao-mei Zhang,Wei-long Zhang,Hui Yu,Xiang-ting Dong,Long Xia
The porous Eu(TTA) 3 (TPPO) 2 /SnO 2 (ETTS, TTA: 2-thenoyltrifluoroacetonate and TPPO : triphenylphosphine oxide) composite was prepared via sol-gel method with tetraethyl orthosilicate (TEOS) as catalyst which showed the cumulate litchi shell-like structure. The Eu(TTA) 3 (TPPO) 2 organic complexes (ETT) could be absolutely distributed into the pores of the SnO 2 matrix at the molecular level through sol-gel process. SiO 2 was used as the hard template which was removed to increase porosity during the prepared process. The red emission of ETTS was exhibited under the 368 nm excitation light, and much better luminescence properties was shown after washing off SiO 2 (ETTS-W) which was about 4 times of unwashed ETTS (ETTS-UW) and 15.6 times of ETT for 615 nm emission when Eu content was 6 wt%. The excellent luminescence property of ETTS-W samples was mainly attributed to the organic ligands, the pore structure after removing SiO 2 and stronger ultraviolet absorption capacity of SnO 2 matrix.
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JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
·
2020
·
IF 1.816
Kiran Abdullah,Xia Kong,Muhammad Imran,Ghulam Mustafa,Yanli Chen
A new hybrid material has been developed by mixing a sandwich-type double-decker, Eu[Pc(OC 4 H 9 ) 8 ] 2 = 2,3,9,10,16,17,23,24-octabutoxyphthalocyaninate] with acidified multiwalled carbon nanotubes (aMWCNTs) through non-covalent interactions. The UV-vis spectrum, X-ray diffraction and scanning electron microscope have been employed to reveal the J -aggregate mode and optimized morphology of Eu[Pc(OC 4 H 9 ) 8 ] 2 molecules in the Eu[Pc(OC 4 H 9 ) 8 ] 2 /aMWCNTs hybrid material. The gas-sensing devices based on this hybrid material are fabricated by a simple solvent-processing quasi-Langmuir–Shäfer (QLS) progress. The n -type and p -type response is shown by the Eu[Pc(OC 4 H 9 ) 8 ] 2 /aMWCNTs hybrid film at room temperature. The detection limit of the hybrid for ammonia and nitrogen dioxide gas is 0.5 ppm and 0.3 ppm, respectively.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2020
·Vol. 27
·期 22
·27663-27673
·
IF 3.056
Liu Yuan-zhen,Xu Qi-yan,Guo Rui-tang,Duan Chao-peng,Wu Gui-lin,Miao Yu-fang,Gu Jing-wen
The Cu/TiO 2 catalysts with the addition of Eu were developed by the sol-gel way for the selective catalytic reduction (SCR) of NO x by NH 3 . Activity tests revealed that CuEu/TiO 2 -0.15 catalyst showed the optimal de-NO x performance in a wide temperature range (150–300 °C), along with an admirable SO 2 tolerance. According to characterization analysis, the relationship between the NH 3 -SCR performance and physicochemical characters of samples was explored. The adjunction of Eu on Cu/TiO 2 catalyst can contribute to the formation of a large amount of Cu 2+ , adsorbed oxygen, and acid sites on the catalyst surface. Moreover, the Eu addition on Cu/TiO 2 is favorable to the generation of activated NO x and NH 3 substances adsorbed on the catalyst surface, which would conduce to the NH 3 -SCR process by Langmuir-Hinshelwood (L-H) mechanism effectively.
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高影响因子
Journal of Environmental Sciences
·
2020
·
IF 4.302
Shengbo Li,Lijia Dong,Zuofu Wei,Guodong Sheng,Kui Du,Baowei Hu
Herein, we developed the invasive plant-derived biochar (IPB) functionalized with CaAl-LDH at five mass ratios using a physical mixture method, assessed their adsorption perform for Eu(III), and explored the relative mechanisms. Results show that the IPB successfully loaded CaAl-LDH in five composites and their Eu(III) sorption affinities were strongly affected by solution pH, contact time, temperature, and the mass ratio of LDH and IPB. All the sorpiton process for Eu(III) occurred on the heterogeneous surface of five composites and the boundary layer diffusion limited the chemical sorption rate. Interestingly, the CaAl-LDH/IPB composite with high ratio of IPB had higher sorption capacity than the one with high ratio of LDH due to larger porosity of the former. Three mechanisms containing ion exchange between Al and Eu ions, surface complexation with carboxyl- and oxygen-containing functional groups, and precipitation were involved in the Eu(III) sorption, but the dominant sorption mechanism for each CaAl-LDH/IPB composite differed with different mass ratio of CaAl-LDH and IPB. In composite with more IPB (e.g., CaAl-LDH/IPB-13), both ion exchange and surface complexes dominated the sorption process and the intensity of Eu 3+ was identified with the one of Eu 2 O 3. Whereas in composites with high LDH, ion exchange dominated the sorption and the intensity of Eu 3+ was obviously higher than the one of Eu 2 O 3 . This research will provide a new perspective for the application of the LDH/biochar materials.
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ANALYTICAL CHEMISTRY
·
2026
·
IF 7.3
Min Fan,Jianxu Zhang,Sen Yin,Jingya Li,Ting Gao,Li Li,Yanyan Zhou,Hongfeng Li
Abstract l-Cysteine (Cys) levels are linked to many health issues and serve as critical diagnostic criteria for various diseases. However, their highly specific recognition and determination from complex biological matrices remain challenging due to interference from biothiol-containing analogs, such as homocysteine (Hcy) and glutathione (GSH). Herein, by strategically positioning eight aldehyde groups at the periphery of a dinuclear Eu(III) helicate, we achieved the specific determination of l-Cys via an induced negative circularly polarized luminescence (CPL) signal (gmax ≈ −1.22, 595 nm). 1H NMR and ESI-MS combined with single-crystal X-ray crystallography and DFT calculations revealed that the size match between the periphery pocket in the helicate and the thiazolidine ring formed by l-Cys and aldehyde cyclization contributed to this CPL response, which creates a large energy difference (∼37.6 kcal/mol) between diastereoisomers and a M-helical preference. While the L-Hcy only resulted in a weak and positive signal (glum ≈ 0.15) due to the larger ring size, the GSH was CPL silent due to the non-cyclization reaction. Benefiting from the large glum value, the probe exhibited the high sensitivity for l-Cys in water or bovine serum albumin (BSA), with a detection limit lower than 8.11 × 10–7 M. Additionally, to facilitate commercial applications, a “test strip-like” hydrogel hybrid film was prepared, which still retains sensing capability to l-Cys. This work therefore provides a strategy for l-Cysteine detection by virtue of induced helical chirality of metallosupramolecules and strong lanthanide CPL.
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