Analytical Methods
·
2023
·Vol. 15
·期 26
·3233-3239
·
IF 3.1
Jian Song,Xiaoqin Yang,Sida Xie,Guolei Zhu,Xiaoping Rao,Ping Zhao,Qian Jiang
The specificity detection of Al3+ is important for monitoring life health and environmental pollution. A fluorescence enhancement probe based on caffeic acid HAM was synthesized for detecting Al3+ with high sensitivity and good selectivity. When Al3+ was added in the aqueous solution of HAM, the formation of HAM–Al3+ complexes inhibited the PET process, which led to great enhancement of fluorescence. The addition of other metal ions cannot induce the change of fluorescence intensity. The sensing mechanism was proved by 1H NMR titration, MS, and Job's plot. Moreover, probe HAM exhibited excellent properties, such as high sensitivity (LOD = 0.168 μM), fast response time (30 s), wide pH range (3–11), and good interference ability. Based on the above results, probe HAM was used to explore its bioimaging application in biological samples.
研究领域:
分析化学
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生物医学
·
环境科学
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DOI
PubMed
高影响因子
JOURNAL OF APPLIED PHYSICS
·
2021
·Vol. 129
·期 5
·
IF 2.546
Jiao Yan,Guo Mengting,Wang Renle,Shao Chongyun,Hu Lili
In this study, Er 3+ /Al 3+ co-doped silica glasses with various Al/Er ratios ranging from 0 to 200 and a constant Er 2 O 3 amount were prepared using the sol-gel method combined with high-temperature vacuum sintering. The absorption, emission spectra, and fluorescence lifetime of Er 3+ ions were recorded and the absorption and emission cross sections were calculated. Using Raman, 27 Al and 29 Si magic angle spinning nuclear magnetic resonance (MAS-NMR), 27 Al triple-quantum (TQ)-MAS-NMR, and electron paramagnetic resonance (EPR) spectroscopies, the physical and optical properties were correlated with the glass structural modifications due to the Al/Er ratio change. With the increase in the Al/Er ratio, the content of Al 3+ ions around the Er 3+ ions gradually increased. Meanwhile, the AlO 5 and AlO 6 polyhedrons increased at the expense of the AlO 4 and SiO 4 tetrahedrons, which resulted in an improved symmetry and better ionic Er–O bonds. These structural changes led to the site-to-site variations in the Er 3+ local environment and the changes in the ligand field strength of the Er–O bonds. This, in turn, resulted in the inhomogeneous broadening of the absorption and emission spectra, with a blue shift of both absorption and emission peaks and a decrease in both absorption and emission at 1.53 μ m. With the increase in Al/Er ratio, the full width at half maximum (FWHM) of the emission increased from 27.2 to 54.3 nm. The FWHM × emission cross section ( σ e m i ) parameter for evaluating broadband amplification behavior was 30.1 × 10 −20 cm 2 · nm. This work reveals the close relationship between the glass structure and the spectroscopic properties of Er 3+ ions and provides an important reference for the design of broadband amplifier materials in the field of optical communication.
研究领域:
材料科学
·
光学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Binbin He,Ying Fu,Yun Zu,Yunxiang Nie,Yi Mei
Fluorine (F) is a high-value resource that has been overlooked in the production of wet-process phosphoric acid (WPA) due to its high susceptibility to complexation with metal cationic impurities, hindering F efficient recovery and subsequent phosphoric acid purification. In this paper, a co-precipitation strategy is proposed for recovering F from the WPA. Varieties of combinations between metal cation (Na + , Mg 2+ and Al 3+ ) and F - with different molar ratios in aqueous and phosphoric acid systems are designed to explore the co-precipitated regulation. Results show that the simultaneously removal efficiencies of Al 3+ , Mg 2+ and F - can be higher than 90 % in the form of NaAlMgF 6 and Na 3 AlF 6 precipitations as the n(Na + ): n(Al 3+ ): n(Mg 2+ ): n(F - ) = 5: 1.5: 1: 6 in pure systems. DFT calculations further confirm that the NaMgAlF 6 precipitation is the most stable structure identified by using XRD Rietveld refinement. Based on this fact, extra Na + and F - are added into the industrial WPA, so that the Na + , Al 3+ , Mg 2+ and F - are co-precipitated in the form of NaAlMgF 6 , and the ultimate removal efficiencies can exceed 90 % under the optimal conditions. Besides, low-cost cycling recovery of Na + and F - are also investigated. These findings are promising for the efficient utilization of F resources from phosphate rock and other ores, which is of great economic and environmental significance.
研究领域:
化学工程
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环境科学
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产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2026
·
IF 5.2
Yaran Wen,Yani Yao,Haichuan Bian,Yudong Xu,Mengru Xu,Yaxiao Li,Bo Zhang,Yifei Song,Saisai Chen,Dongdong Li
Al 3+ -added Cs 2 AgInCl 6 and Cs 2 AgBiCl 6 catalysts were prepared by co-precipitation method. It is shown that the incorporation of high concentration of Al 3+ in Cs 2 AgInCl 6 (20% Al 3+ or above) and in Cs 2 AgBiCl 6 (with 50% Al 3+ or above) causes obvious phase separation and formation of secondary phase (AgCl). And the optical bandgaps of Al 3+ -added Cs 2 AgInCl 6 and Al 3+ -added Cs 2 AgBiCl 6 are about 3.5 eV and 2.7 eV, respectively. Benefiting from the enhanced carrier transfer in AgCl/Cs 2 AgInCl 6 heterojunction, Cs 2 AgInCl 6 :0.9Al 3+ exhibits excellent degradation performance for Sudan Red III with a rate above 97% within 16 min and catalytic cycles above 4 times. And Cs 2 AgBiCl 6 :0.7Al 3+ can degrade Sudan Red III at a rate higher than 96% within 14 min. And a new degradation pathway of Sudan Red III in ethanol solutions was proposed firstly. The Al 3+ -added Cs 2 AgInCl 6 and Cs 2 AgBiCl 6 catalysts also exhibit good cyclic and storage stabilities, showing potential applications in the photodegradation of organic pollutants.
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DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Xiaoxu Cui,Zherui Wan,Zhonghao Li,Fengxia Wang,Pengshuai Wei,Guang Yang
Herein, intelligent N, S-doped fluorescent carbon dots (N, S-CDs) were constructed by using l -cysteine and carboxymethyl cellulose (CMC) polymer as precursors through a one-step hydrothermal method. The designed N, S-CDs displayed strong fluorescence (FL) emission with a FL quantum yield of 44.48 % and could be utilized for the quantitative tracing of TCs and Al 3+ via the “On-OFF-ON” FL transition with wide linear detection range (1.66–104.5 μM for TCH, 1.66–163.2 μM for OTC, 1.66–69.5 μM for DOX and 33–104.3 μM for Al 3+ ). The detection limits (LODs) of TCH, OTC, DOX and Al 3+ were calculated to be 53.02 nM, 95.61 nM, 41.87 nM and 57.69 nM, respectively. On the basis of the FL “On-OFF-ON” strategy, multiple logical gate operations including “NOR” and “INHIBIT”, were constructed successfully. Additionally, N, S-CDs uploaded to hydrogen bars were utilized for the recognition of TCs and Al 3+ in a portable manner, which revealed great application potential in the field of anti-counterfeiting and encryption.
研究领域:
分析化学
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材料科学
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环境科学
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产品关联
DOI
高影响因子
SYNTHETIC METALS
·
2020
·
IF 3.286
Yi-lin Mu,Cui-jiao Zhang,Zhi-lu Gao,Xian Zhang,Qian Lu,Jin-shui Yao,Shu Xing
Aluminum is the most affluent metal element in many living organisms. However, excessive Al 3+ is considered to be harmful for biological activities. In the past decades, many of sensing techniques and probes were widely developed for Al 3+ detection. But the low sensitivity and nonquantitative detection still need to be improved. Multi-signal probes may sweep away the obstacle. In this article, a Schiff base based on carbazole and triphenylamine as a multi-signal (colorimetric, absorption and fluorescence) probe was successfully designed, prepared and characterized. This newly designed probe, 4, 4-(9-ethyl-carbazol) methylenimine-triphenylamine(L), exhibited a “turn-on” fluorescence mode for the qualitative and quantitative detection of Al 3+ . The color of L changes from light yellow to orange, and the limit of detection (LOD) is 2 × 10 −6 mol/L. The LODs by absorption and fluorescence methods were found to be 6.7 × 10 −7 mol/L and 6.3 × 10 −8 mol/L, respectively. The data of the Job’s plot, 1 H NMR and LC–MS imply that L will be hydrolyzed in the presence of Al 3+ , and a new complex is formed based on the carbazole amide molecule and Al 3+ to push the “turn-on” fluorescence. Furthermore, the fluorescence image of HeLa cells facilitating intracellular detection of Al 3+ was successfully captured by the probe of L.
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Yixin Xu,Wenqin Liu,Zenghui Li,Hanfeng Cui,Pingnan Wan,Yan Lin
Dual-mode sensing of Al 3+ /Cu 2+ by a novel ferrocene derivative SH-Fc. • SH-Fc detects Al 3+ via a fluorescence turn-on response. • SH-Fc shows colorimetric and electrochemical responses to Cu 2+ . • SH-Fc detects Al 3+ /Cu 2+ in real samples via dual channels. • Smartphone-based platform realizes on-site quantification of metal ions. A novel multichannel fluorescent probe SH-Fc based on ferrocene, salicylaldehyde hydrazone and benzothiazole moieties was synthesized and fully characterized. The probe exhibits highly selective recognition of Al 3+ and Cu 2+ through dual-mode responses. Specifically, it shows significant fluorescence enhancement toward Al 3+ , while displaying distinct colorimetric and electrochemical changes upon addition of Cu 2+ . Furthermore, SH-Fc[Al 3+ ] complex allows for subsequent determination of Cu 2+ through the fluorescence model. Al 3+ and Cu 2+ exhibited calculated detection limits as low as 1.7 × 10 −7 M and 9.6 × 10 −8 M, respectively. SH-Fc and SH-Fc[Al 3+ ] were successfully applied for the detection of Al 3+ and Cu 2+ in real samples (including water, food, and traditional Chinese medicines) through fluorescence and electrochemical channels. Importantly, a smartphone-based color recognition application was employed for quantitative on-site analysis, providing a portable and practical approach for Al 3+ and Cu 2+ monitoring in daily life. Download: Download high-res image (217KB) Download: Download full-size image
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高影响因子
ChemistrySelect
·
2022
·Vol. 7
·期 46
·e202203635
·
IF 2.307
Mei Shi,Jinghan Jiang,Xiao Gao,Yining Li,Keren Xiao,Qi-an Han,Weifu Kong,Qingliang Liu,Zhiyi Yao
Graphical A water-soluble PDI, N, N′ -bis (L-phenylalanine)-3,4,9,10-perylene tetracarboxylic diimide (PDI-Phe) is designed and synthesized for rapid and selective fluorescent detection of Al 3+ in aqueous solution. In the presence of Al 3+ , non-covalent interactions such as electrostatic and π-π interactions would promote supramolecular self-assembly between PDI-Phe and Al 3+ , making the aggregation and fluorescence quenching of PDI-Phe, thereby realizing the quantitative detection of Al3+ between 100 nM and 900 nM. The limit of detection (LOD) of Al 3+ was as low as 6.54 nM. Aluminum (Al) is widely used in food industry, but excessive absorption of Al 3+ causes many serious health problems. Therefore, it is of great significance to determine the specificity of Al 3+ . In this study, we designed and synthesized a water-soluble perylene diimide derivative (PDI-Phe) for monitoring Al 3+ rapidly and visually. Through absorption and emission spectroscopy techniques, we systematically explored the properties and mechanism of the sensor to Al 3+ . The limit of detection (LOD) of Al 3+ was as low as 6.54 nM. And with the existence of Al 3+ , electrostatic interaction and intermolecular π-π stacking promoted the aggregation and fluorescence quenching of PDI-Phe. Even in the presence of other analytes, PDI-Phe still had excellent selectivity and sensitivity for Al 3+ detection. Besides, it also had the characteristics of low cost, good water solubility, excellent chemical and optical stability, and easy synthesis. Finally, this method can be further applied to tap water samples.
研究领域:
分析化学
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材料科学
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环境科学
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DOI
高影响因子
RSC Advances
·
2024
·Vol. 14
·期 3
·1944-1951
·
IF 3.9
Changdao Han,Huan Yang,Yan Fan,Zhikun Wang,Pei Li,Jie Jiang,Mohan Huang,Jing Xu,Junlang Chen,Liang Chen
Regulating the photoluminescence (PL) of carbon quantum dots (CQDs) through ion modification is a well-established and effective approach. Herein, we report the opposite regulation effects of Al3+ ions on the PL properties of two distinct types of CQDs (graphene quantum dots, GQDs, and nitrogen-doped carbon quantum dots of 2,3-diaminophenazine, DAP), and elucidate the underlying mechanism of the binding of Al3+ ions to different PL sites on CQDs by employing ultraviolet-visible spectroscopy, X-ray photoelectron spectroscopy, and density functional theory calculations. Specifically, Al3+ ions are primarily situated around the oxygen-containing groups, which do not impact the π–π regions of GQDs. However, Al3+ ions are preferentially adsorbed on the top of pyridine nitrogen in the phenazine rings of DAP, thus reducing the PL regions of DAP. Based on the opposite PL effects of Al3+ on GQDs and DAP, we explore potential applications of information encryption and successfully realize multi-level information encryption and decryption, which may provide new strategies for CQDs in information security.
研究领域:
材料科学
·
化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xinyu Cheng,Tianqi Li,Chi Zhang,Qing Zhang,Shaoning Wang,Enqing Zhu,Lili Zhang,Zhiguo Wang
The mechanical flexibility and high conductivity of hydrogel electrolytes are crucial for their application in supercapacitors. In this study, we developed hydrogel electrolyte based on lignocellulose nanofibers (LCNFs) through nanofibrillation and self-catalytic gelation in a glycerinum/choline chloride/aluminum chloride hexahydrate (Gly/ChCl/AlCl 3 ·6H 2 O) metal-based neutral deep eutectic solvent (DES) system. The lignin-Al 3+ self-catalytic mechanism offered an eco-friendly and sustainable method for synthesizing hydrogel electrolytes, while enhancing their ionic conductivity. The high aspect ratio of LCNFs significantly improved the mechanical strength of the hydrogel electrolyte by facilitating the intertwining of LCNFs with acrylamide molecules. The resulting hydrogel electrolyte demonstrated exceptional mechanical strength (485 kPa), high ionic conductivity (26.1 ms/cm), strong adhesion (225 kPa), and excellent environmental stability (up to −80 °C). A supercapacitor assembled with this hydrogel showed a remarkable specific capacitance (200 F/g) and exhibited high sensitivity in electrical signal applications. This work demonstrates the transformation of wood fiber into functional lignocellulose-based materials, highlighting the high-value utilization of lignocellulose resources for energy storage and other applications.
研究领域:
材料科学
·
能源存储
·
可持续化学
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产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2018
·
IF 2.88
Jia Feng,Li Xin Duan,Zhuo Bin Shang,Jian Bin Chao,Yu Wang,Wei Jun Jin
A new julolidine based Schiff base receptor (L) was synthesized and characterized. L forms a 1:1 complex with Al 3+ in methanol, resulting in an immediate color change from chartreuse to orange and a remarkable enhancement in its emission intensity along with a bathochromic shift from 540 nm to 570 nm. Addition of trace amounts of water significantly quenches the fluorescence emission , where a decomplexation of Al 3+ from the L-Al 3+ complex takes place. The significant quenching effect indicated that the L-Al 3+ ensemble system can be used to detect trace water in commercial methanol. From the fluorescence titration, the detection limit for sensing water in methanol was estimated to be 0.0047%. We have also made an easy-to-prepare test strip of L-Al 3+ to detect water in methanol through naked-eye observation, which is possible to realize in situ monitoring.
研究领域:
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2021
·
IF 5.279
Jian Wang,Hui Xie,Haoyang Li,Rong Wang,Bo Zhang,Tianrui Ren,Jianli Hua,Nan Chen
Hydrogen sulfide (H2S) is one of the typical reactive sulfur species, which exhibits an important role in regulating both physiological and pathological processes. Recent studies indicate that H2S also serves as a key signaling molecule in a broad range of regulatory processes in plants. However, in situ imaging and detection of the levels of H2S in plant tissues remains a challenge. In this work, a NIR fluorescent probe (HBTP-H2S) was synthesized to achieve H2S imaging in living plant tissues. HBTP-H2S exhibited high sensitivity toward H2S with a large Stokes shift (250 nm). HBTP-H2S could be applied to HeLa cells to detect the fluctuation of endogenous H2S levels in response to physiological stimulations. Importantly, HBTP-H2S was utilized for direct H2S imaging of rice roots and revealed the upregulation of H2S signaling in response to aluminum ions and flooding stresses. Our work thus provides a new tool to investigate H2S-involved signal interaction and protective resistance of crops under environmental stresses.
研究领域:
植物生理学
·
环境胁迫
·
生物成像
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DOI
PubMed
高影响因子
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