SYNTHETIC METALS
·
2016
·
IF 2.299
Li Yuan Qin,Ling Jie Hou,Jia Feng,Jian Bin Chao,Yu Wang,Wei Jun Jin
A reversible fluorescent-colorimetric Schiff-base receptor (L) derived from julolidine and aminourea was developed for the selective sensing of Al 3+ ions in buffered aqueous medium. Sensor L demonstrated the presence of Al 3+ ions by both fluorescence enhancement and an instantaneous color change of solution from colorless to yellow. L forms complex with Al 3+ in 1:1 ratio as supported by Job’s plot analysis and mass spectroscopic measurement. The sensitivity of the fluorescent based assay (4.67 nM) for Al 3+ is far below the WHO acceptable limit (7.41 μM) in drinking water. Furthermore, L was employed for imaging the Al 3+ ion in living biological cells.
研究领域:
分析化学
·
生物医学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Qian Zhao,Jing Wang,Hai-Bo Liu,Long-Hui Duan
The organic–inorganic hybrid material was prepared by embedding 2-amino-3′,6′-bis(diethylamino)spiro[isoindoline-1,9′-xanthen]-3-one (RBH) onto mesoporous SBA–15 silica and coordinating it with Al 3+ (RBH–SBA–15–Al 3+ ). RBH–SBA–15–Al 3+ was used for the selective and sensitive detection of tetracycline antibiotics (TAs) in aqueous media based on the binding site–signaling unit mechanism, in which Al 3+ acted as the binding site and the fluorescence intensity at 586 nm as the response signal. The addition of TAs to RBH–SBA–15–Al 3+ suspensions resulted in the formation of RBH–SBA–15–Al 3+ –TAs conjugates, which realized the electron transfer process and turned-on fluorescence signal at 586 nm. The detection limits for tetracycline (TC), oxytetracycline, and chlortetracycline were 0.06, 0.06, and 0.03 µM, respectively. Meanwhile, the detection of TC was feasible in real samples, such as tap water and honey. In addition, RBH–SBA–15 can operate as a TRANSFER logic gate by using Al 3+ and TAs as input signals and the fluorescence intensity at 586 nm as output signal. This study proposes an efficient strategy for the selective detection of target analytes by introducing interaction sites (e.g. Al 3+ ) with target analytes in the system.
研究领域:
分析化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Teng Su,Huanle Chen,Zhiyang Wei,Mingyuan Hao,Xiaodong Wang,Yufeng Liu,Chao Ma,Yang Miao,Feng Gao
In this study, based on the highly disordered multi-component system with high-entropy and traditional perovskite with high dielectric constant, a series of the Al 3+ -doped high-entropy perovskite (Zn 1/6 Ba 1/6 Ca 1/6 Sr 1/6 La 1/3 )Ti 1-x Al x O 3 (0 ≤ x ≤ 0.1) ceramics was designed and synthesized by using a solid state reaction method to explore the effects of different doping amounts on microwave dielectric characteristics together with the microstructures. The single-phase structure in space group Pm-3m was determined in the sintering temperature range of 1325 °C–1400 °C and both had high dielectric constant (from 74.46 to 93.44). With the increase of Al doping amount, the variation trend of dielectric constant was closely related to the density and ionic polarizability. The Q × f value of doped samples was higher than that of undoped samples, which was mainly due to the interaction of oxygen vacancy content and grain size. Due to the high-entropy effect resulting in [Ti-O6] octahedral torsion, the τ f value was greatly reduced compared with traditional perovskite, which exhibited outstanding microwave dielectric properties (ε r = 74.46, Q × f = 4108 GHz at 4.31 GHz, and τ f = +184 ppm/°C). The present work provided an effective approach to improve the properties of microwave dielectric ceramics .
✓ 已验证
产品关联
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2025
·
IF 8
Yujiao Cui,Xiaofei Li,Qingyan Gu,Zhixiang Xu,Longhua Xu
The residual presence of ciprofloxacin (CIP) in aquatic products raises, increasing concerns regarding bioaccumulation and antimicrobial resistance, necessitating the development of highly sensitive and selective detection methods. Here, we present a novel ratiometric fluorescence sensor based on bovine serum albumin-stabilized copper nanoclusters (BSA-CuNCs) and Al 3+ for CIP detection. CIP complexes with Al 3+ to simultaneously quench the orange-red emission of BSA-CuNCs at 600 nm and enhance its intrinsic blue emission at 490 nm, thereby producing a self-calibrated ratiometric signal (F 490 /F 600 ) with a clear concentration-dependent response and an observable color transitions from orange-red to blue. Benefiting from macromolecular surface modification of CuNCs and the ratiometric sensing strategy, the sensor displays good stability, high selectivity, and strong anti-interference capacity. It achieves a wide linear dynamic range of 0.025–50.0 mg L −1 (R 2 = 0.9935), a low limit of detection (0.01 mg L −1 ), and practical potential in complex matrices. Validation in diverse aquatic food samples has yielded satisfactory recoveries of 87.0%–108.8% with RSD < 2.4%. To further expand its practical applicability, a smartphone-assisted sensing platform has been developed, enabling accurate RGB-based quantification (R 2 = 0.9929). Statistical comparison with HPLC using paired t -test showed no significant difference between the two methods ( p > 0.05), indicating high analytical concordance. This work establishes a reliable and versatile approach for accurate quantification and intuitive visual screening of CIP residues, and also suggests the potential for future extension toward simultaneous detection of Al 3+ and CIP in real-world applications.
研究领域:
分析化学
·
食品安全
·
纳米生物技术
·
药物残留检测
·
环境监测
·
荧光传感
·
转化医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2018
·
IF 2.88
Xiang-yu Kong,Ling-Jie Hou,Xiu-qing Shao,Shao-Min Shuang,Yu Wang,Chuan Dong
A novel fluorescent probe , phenolphthalein‑dialdehyde‑(2‑pyridyl) hydrazone (L), for sequentially detecting Al 3+ and F − in almost 100% aqueous medium was successfully designed and synthesized. The probe offers two binding pockets for Al 3+ to form a 1: 2 ligand/metal complex, leading to a significant fluorescence enhancement at 465 nm. Further, the in-situ formed L-Al complex acts as a secondary fluorescent chemosensor for F − by quenching the fluorescence of the complex with high selectivity. The detection limit for Al 3+ and F − sensing is 2.28 nM and 0.13 μM, respectively, which are far below the World Health Organization (WHO) acceptable limits (7.41 μM for Al 3+ ion and 79 μM for F − ) in drinking water . The probe L was successfully applied to the detection of Al 3+ and F − in cells using fluorescence microscopy .
研究领域:
分析化学
·
生物医学
✓ 已验证
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2022
·
IF 4.831
Xiang-yu Kong,Shao-Min Shuang,Yu Wang,Chuan Dong
Herein, we report a new phenolphthalein appended Schiff base (PASB) as reversible fluorescent sensor for the detection of pyrophosphate (PPi) ions through the metal displacement mechanism. PASB showed sensing exclusively toward Al 3+ ions in DMF/H 2 O (v/v = 1/4, pH 5.5) solution, which resulted in a significant fluorescence enhancement at 540 nm. The 1: 2 binding stoichiometry for the complex formation between PASB and Al 3+ was confirmed by Job’s plot and mass spectroscopic studies. Moreover, a solution of the in situ formed PASB–Al 3+ complex displayed a high selectivity to PPi. The addition of PPi to PASB-Al 3+ ensemble significantly quenched its fluorescence. Thus, a dual response was established based on “Off–On–Off” strategy for detection of both Al 3+ and PPi. The detection limit is 5.86 nM and 26 nM for Al 3+ and PPi, respectively. On this basis, we use PASB to detect Al 3+ in food samples. Furthermore, PASB was successfully applicable to detect Al 3+ and PPi for intracellular imaging in Human liver cancer cells.
研究领域:
分析化学
·
生物医学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
Analytical Methods
·
2024
·
IF 2.7
Rui Jiang,Jinfeng Wang,Bin Feng,Panpan Mou,Shuo Zhou,Xianbo Zhang,Yan Zhou,Guosong Chen,Donghai Lin
We have developed a novel fluorescence sensor based on upconversion nanoparticles (UCNPs) for the rapid and sensitive detection of trace aluminum ions (Al³⁺). The sensor utilizes the inner filter effect (IFE) between the UCNPs and the xylenol orange-aluminum complex (XO-Al³⁺), resulting in significant fluorescence quenching at 543 nm upon Al³⁺ binding. This quenching correlates directly with the Al³⁺ concentration, allowing for quantitative detection within a range of 0–30 µM and achieving an ultra-low detection limit of 0.19 µM. Selectivity of the sensor is enhanced by the incorporation of ascorbic acid, which masks interfering Fe³⁺ ions, thus ensuring accurate determination of Al³⁺ even in the presence of other metal ions. The UCNPs-XO sensor exhibits excellent stability, reproducibility, and minimal interference from commonly co-existing substances. This makes it suitable for the detection of Al³⁺ in various matrices, including food products and environmental water samples. Our work offers a significant advancement in Al³⁺ detection, with potential applications in food safety, environmental monitoring, and public health.
研究领域:
分析化学
·
环境科学
·
食品安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Qihong Cai,Menglin Wang,Zhima Yangcuo,Xiaodan Zheng,Xinyi Zheng,Yaning Qin,Zhexiang Zou,Shiqi Zhang,Zhonghui Chen,Zhangxu Chen
In this study, a new first derivative synchronous fluorescence spectrometry (SFS) for the accurate and sensitive determination of pefloxacin (PFX) and fleroxacin (FLX) in wastewater was established. PFX and FLX were complexed with Al 3+ to significantly enhance their fluorescence intensity. Because the conventional fluorescence spectra of PFX-Al 3+ and FLX-Al 3+ overlap significantly, the wavelength difference (Δλ = 155 nm) was chosen for SFS scanning to narrow spectral band. And the narrowed synchronous fluorescence spectra was subjected to first derivative processing. Finally, the zero intersections of the first derivative synchronous fluorescence spectra at 281.6 nm and 273.6 nm were chosen for the determination of PFX and FLX, cleverly used of spectral parameters to eliminate the serious interference between PFX-Al 3+ and FLX-Al 3+ and the interference of wastewater background. The limits of detection of PFX and FLX were 0.0086 ng·mL −1 and 0.0068 ng·mL −1 with linear ranges from 0.1–40 ng·mL −1 and 0.2–80 ng·mL −1 , respectively. Recoveries of PFX and FLX in wastewater were 88.60 %–98.60 % and 90.00 %–95.60 %. The first derivative SFS established in this study used spectral separation instead of chromatographic separation, so that sample pretreatment was simple and the detection speed was fast. Compared the conventional method of HPLC, the test results of above two methods were close. And the new method had been successfully used for the determination of PFX and FLX residues in wastewater with good results. Therefore, the new first derivative SFS was expected to become a routine detection technology for PFX and FLX residues in wastewater and widely used.
研究领域:
分析化学
·
环境科学
·
药物分析
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Qunfang Lin,Zeyang Li,Zeyuan Zhang,Zhikang Chen,Changxi Yu,Siguo Xiao,Kailing Sun,Tongye Wei
Aqueous aluminum–ion batteries (AAIBs) have attracted considerable attention owing to their high theoretical capacity, high safety, and low cost. However, as a strong Lewis acid, Al 3+ readily coordinates with the lone–pair electrons of water molecules, which significantly polarizes the O H bonds and promotes water dissociation and proton generation. The generated protons can cause severe corrosion of electrode materials, thereby limiting cycling stability and hindering practical applications. In this work, a novel manganese oxide cathode with a hollow hexagonal pyramidal layered nanostructure is successfully synthesized and coupled with 1 M Al₂(SO₄)₃ electrolyte containing 0.06 M K₂SO₄. In situ and ex situ characterizations reveal that the cathode delivers high capacity through a synergistic Al 3+ /H + co–intercalation and deintercalation mechanism. Importantly, the introduction of potassium sulfate induces the formation of a potassium aluminum sulfate passivation layer, which effectively suppresses acid−induced electrode corrosion and enhances cycling stability. As a result, the assembled battery achieves a high specific capacity of 354 mAh g −1 at 0.2 A g −1 and a high discharge voltage plateau of 1.7 V . At 0.5 A g −1 , it maintains 90% of its capacity (based on a maximum activated capacity of 188 mAh g −1 ) over 420 cycles. This work provides a facile and effective strategy for developing high–performance aqueous aluminum–ion batteries.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Qiuhan Cao,Yiting Zhuo,Lei Li,Xiaoyi Dong,Xin Yu,Hu Yao,Yanrong Ren,Kewei Yu,Jing Huang,Wenhua Zhang,Xiaohui Guo,Xun Wang
CuFeAl solid-solution alloy catalysts were constructed via Al 3+ -mediated electrodeposition. • The homogeneous alloy optimizes *NO 2 conversion, while Fe/Al-containing sites promote H 2 O activation and *H supply. • An in-situ generated oxygen-rich amorphous layer suppresses metal leaching and enhances long-term alkaline stability. • The catalyst achieves high NH 3 yield rates (>1.8 mmol h −1 cm −2 ) and FE (> 95%) with 800 h stability in MEA. The electrocatalytic nitrite reduction reaction (eNO 2 RR) to ammonia represents a sustainable alternative to the Haber-Bosch process, yet CuFe alloy catalysts for eNO 2 RR are constrained by insufficient active hydrogen (*H) supply and inevitable leaching of active centers in alkaline electrolytes, particularly under high current densities. Herein, we introduce non-electroactive aluminum ions (Al 3+ ) during electrodeposition to regulate the interfacial deposition environment and enable the formation of a homogeneous CuFeAl solid-solution alloy (CuFeAl−SSAC) from a phase-segregated CuFe system. Experimental and theoretical analyses reveal that the homogeneous Cu − Fe atomic arrangement regulates the adsorption and conversion of *NO 2 intermediates and lowers the energetic requirement of the initial hydrogenation step, while the Al-regulated interfacial environment promotes H 2 O activation and enhances reactive *H generation and utilization. During prolonged electrolysis, an oxygen-rich amorphous reconstructed surface layer forms, with Al-mediated O 2− /OH − interactions contributing to suppressing active sites dissolution. Consequently, CuFeAl−SSAC achieves an NH 3 yield rate of 7.1 mmol h −1 cm −2 with a faradaic efficiency (FE) of 96.2% in H-cell and sustains NH 3 yield rate of 1.8 mmol h −1 cm −2 with 95.0% FE for 800 h in membrane electrode assembly (MEA). This work highlights a strategy of aluminum incorporation for simultaneously enhancing catalytic activity and stability of electrocatalysts. Heterophase CuFe alloy (CuFe−TPAC) was remodeled into a homogeneous CuFeAl solid-solution catalyst (CuFeAl−SSAC) by introducing Al 3+ , which accelerates hydrogenation kinetics and forms a protective oxygen-rich amorphous layer to overcome the activity-stability trade-off in eNO 2 RR. This design achieves an exceptional NH 3 yield rate of 7.1 mmol h −1 cm −2 with 96.2% FE and over 800-h stability in membrane electrode assembly (MEA). Download: Download high-res image (152KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
JOURNAL OF FLUORESCENCE
·
2025
·
IF 3.1
Liu Wenqin,Liu Yanping,Li Zenghui,Zou Santai,Wan Pingnan,Lin Yan
A new Chemosensor, 5-ferrocenylsalicylaldehyde-2-pyridinehydrazone ( SP-Fc ), was designed and synthesized by condensing 5-ferrocenylsalicylaldehyde with 2-hydrazinopyridine. Its structure was characterized by 1 H NMR, 13 C NMR and HRMS. SP-Fc could be used to identify Al 3+ through dual optical and electrochemical responses. Upon addition of Al 3+ , The probe exhibited a significant fluorescence enhancement attributed to CHEF and the inhibition of both PET and ESIPT processes. The probe specifically regonized Al 3 + in a wide pH range and had a well linear range (0-200 µM). Job’s plot analysis revealed that the interaction of SP-Fc with Al 3+ was 1:1 binding stoichiometry. The detection limit of probe for Al 3+ was observed as low as 1.30 × 10 − 7 M. The response mechanism of SP-Fc to Al 3 + was confirmed through NMR titration experiment. Additionally, the electrochemical signals of SP-Fc in the presence of the Al 3+ was shifted significantly compared with those of the other metal cations tested. Moreover, Confocal fluorescence microscopy imaging demonstrated that SP-Fc can monitor Al 3+ in living MCF-7 cells with low cytotoxicity. This showcases SP-Fc ’s promise for biological system and analytical chemistry, providing a robust tool for Al 3 + detection in diverse settings.
研究领域:
分析化学
·
传感器与传感材料
·
无机化学
·
生物无机化学
·
荧光光谱学
·
电分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Yao Lei,Chengli Xie,Tong Xu,Min Wang,Lianzhe Hu,Zhining Xia
Nanozymes have attracted increasing attention in sensors owing to their capacity for catalytically converting substrates into colored or luminescent products. However, the lack of sensing selectivity limits their practical use. Herein, a ligand engineering strategy was proposed to improve the selectivity of UiO-66 nanozyme. Upon the perfluorination of bridging ligands, the resulting UiO-66-F 4 nanozyme exhibited higher phosphatase-like catalytic activity than the pristine UiO-66. More importantly, UiO-66-F 4 exhibited a remarkable specificity towards Al 3+ , which was ascribed to the specific coordination interaction of Al 3+ with F groups and oxygen-containing groups of UiO-66-F 4 . After incubation with Al 3+ , the aggregation of UiO-66-F 4 nanosheets occurred, which further results in the significant decrease in its catalytic activity. Base on this finding, a colorimetric method for selective detection of Al 3+ was proposed. The linear range is 2–30 μM with a detection limit as low as 0.27 μM. In addition, as an adsorbent for Al 3+ , UiO-66-F 4 also exhibited excellent adsorption performance with a capacity of 27.04 mg/g.
研究领域:
分析化学
·
纳米材料学
·
环境科学
·
生物传感器
·
无机化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）