CHINESE JOURNAL OF CHEMISTRY
·
2016
·Vol. 34
·期 7
·657-661
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IF 1.872
Zhengyi Li,Jinbei Yan,Yue Yin,Zhihui Zhang,Zhiming Wang,Defeng Xu,Xiaoqiang Sun
A simple and nontoxic fluorescent chemosensor of di- O -methyl curcumin has been prepared from curcumin. The sensor exhibited selective and sensitive fluorescent responses toward Al 3+ over a wide range of metal ions, such as Mn 2+ , Ce 3+ , Pt 2+ , Sn 4+ , Hg + , Sb 3+ , K + , Ca 2+ , Mg 2+ , Ba 2+ , Cu 2+ , Ni 2+ , Na + , NH 4 + , Ag + , Pb 2+ , Zn 2+ , Fe 2+ , Fe 3+ , Hg 2+ and Cr 3+ in ethanol/water. The free ligand showed quite weak fluorescence emission due to the isomerization of CO double bond in the excited state, however, after addition of Al 3+ , fluorescence emission results in a prominent fluorescence enhancement.
研究领域:
分析化学
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生物化学
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DOI
高影响因子
JOURNAL OF FLUORESCENCE
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2017
·Vol. 27
·期 5
·1721-1727
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IF 1.461
Wang Fanwei,Duan Hongdong,Xing Dianxiang,Yang Geng
One novel turn-on fluorescence probe founded on conjugated pyrazole Schiff base for detecting Al 3+ was invented. The UV–vis and fluorescence spectrometer were employed to explore optical properties of this probe. The results got from those experiments indicated that this fluorescence probe manifested excellent sensitivity and selectivity for Al 3+ compared with other cations examined(Ag + , Co 2+ , Mg 2+ , Cu 2+ , Ni 2+ , Pb 2+ ,and Zn 2+ ). In addition, this probe displayed a more rapid response and remained stable between pH 6 and 9 by investigating the fluorescence intensity under different response time and various pH values. Remarkably, the detection limit for Al 3+ could lower to 1.0×10 −9 M. Therefore, the probe could be potentially applied to the environment for the detection of Al 3+ , and the availability in biological range of pH that could be further studied to make this probe apply to biological systems in the future.
研究领域:
分析化学
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环境科学
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生物医学
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DOI
PubMed
高影响因子
CARBON
·
2014
·
IF 6.16
Yu Zou,Fanyong Yan,Linfeng Dai,Yunmei Luo,Yang Fu,Ning Yang,Jingyun Wun,Li Chen
Highly blue fluorescent carbon nanodots (CNDs) were synthesized by the hydrothermal method from citric acid and diethylenetriamine with the quantum yield of about ∼86%. Quercetin (QCT) and its fluorescent metal-ion complex (QCT-Al 3+ ) can efficiently coordinate on the surface of CNDs, the emission of CNDs at 429 nm completely overlapped with the absorption peak of QCT-Al 3+ at 428 nm. Therefore, a ratiometric fluorescence sensor for Al 3+ was developed based on fluorescence resonance energy transfer (FRET) with CNDs as donor and QCT-Al 3+ as acceptor. A linear calibration of F 429 / F 481 versus aluminum ion concentration was obtained within 1–20 and 20–60 μM, along with a detection limit of 558 nM. Moreover, the ESIPT–FRET ratiometric fluorescence system based on the CNDs/QCT-Al 3+ was applied for fluorescent test papers with satisfying resolution.
研究领域:
分析化学
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材料科学
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生物传感
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DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2022
·Vol. 29
·期 13
·e202203554
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IF 5.02
Yi Zhang,Zhangdi Lu,Anrui Feng,Jacky W. Y. Lam,Zhenguang Wang,Yu-e Shi,Ben Zhong Tang
Graphical Green-emissive copper nanoclusters (Cu NCs) were synthesized at a relatively high reaction temperature (80 °C) and an extended reaction time to 144 h. The photoluminescence of Cu NCs could be selectively enhanced by adding Al 3+ , attributed to their aggregation-enhanced emission features. Selective detection of Al 3+ is of great significance both for the benefit of human health and environmental safety considerations. In this work, a sensitive and selective fluorescence assay for Al 3+ was proposed based on the green-emissive Cu nanoclusters (Cu NCs). Different from the commonly reported works, the green emissive Cu NCs showed dual emission bands at 450 and 510 nm, attributed to the reaction product between polyvinyl pyrrolidone and ascorbic acid and the Cu core, respectively. Al 3+ could induce the aggregation of Cu NCs by forming covalent bonds, which results in the enhancement of photoluminescence intensity. This enhancement phenomenon is rather selective to Al 3+ , which endows the detection in real samples. These results provide new insights for the fluorescence mechanisms of metal NCs, which also provided a functional luminescent material for various applications, such as chemical sensing, bioimaging and photoelectric devices.
研究领域:
材料科学
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分析化学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Catalysis Science & Technology
·
2023
·Vol. 13
·期 12
·3558-3567
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IF 5
Lihua Wang,Shuangxiu Ma,Chunhong Chen,Bing Lu,Zhe Wang,Yong Wang,Shanjun Mao
The high-loading, good distribution and stable heterogenization of polyoxometalate (POMs) salts with supports, such as oxides, is rather challenging since the structural integrity of POMs is easily destroyed if strong interactions exist. Here, we developed a novel route to achieve the in situ anchoring of high-loading ammonium phosphomolybdate (APMo, with a mass fraction as high as 49%) on alumina with coordinatively unsaturated Al3+ sites without the deformation of the Keggin structures of POMs. The anchoring effect of Al3+penta to polyoxometalates originating from the strong APMo–alumina interaction effectively promotes the dispersion and stability of APMo compared to the samples made by impregnation. The remaining heteropoly acid structure and synergistic effect between APMo and alumina make the hybrid materials exhibit superior redox and acid catalytic performances, achieving >99% selectivity of benzaldehyde for benzyl alcohol oxidation and double the yield for fatty acid esterification compared with that of the impregnated catalyst. This work offers an alternative to the trade-off problem for the heterogenization of POM catalysts and provides a green and recyclable catalyst for the efficient valorization of biomass-derived feed blocks into value-added chemicals.
研究领域:
化学工程
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材料科学
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催化科学
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DOI
高影响因子
CHINESE CHEMICAL LETTERS
·
2025
·
IF 8.9
Shanshan Wang,Junhao Chen,Kui Qu,Xingyun Li,Hao Wang,Qingchi Xu,Jian Weng,Jun Xu
Unravelling the mechanism of electronic state evolution is ultimately important when attempting to functionalize two dimensional (2D) materials through electronic state regulation. However, there is still a lack of understanding in how the individual local functionalized regions could influence the entire 2D-layered property. Herein, we report the observation of surface electronic behavior during these functionalization process when utilizing the electron-deficient aluminium ion (Al 3+ ) to passivate 2D black phosphorus (BP). Interestingly, the local electron density change in response to a certain functionalization can induce the periodic electron density gradient via inductive integration effect and spread over the entire 2D surface layer. Such 2D coupling effect is evidently supported by the combined investigation of in-situ / ex-situ experimental analysis and theoretical calculation, upon the model Al 3+ -BP modulating process. This work discloses the electron-level relationship between the individual and the whole during the functionalization process and therefore provides a direction for precise manipulation of electronic behavior in functionalized 2D materials.
研究领域:
材料科学
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纳米技术
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凝聚态物理
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表面化学
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DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Chen Zhao,Hongmei Xu,Xiaoran Zhang,Yating Meng,Shaomin Shuang,Chuan Dong
Anions are widely found in humans and the environment. The analysis of its content and distribution shows great potential in the fields of life science, environmental science and biochemical reactions. Herein, a new anthraquinone derivative appended fluorescent probe (HBD) was developed as a reversible fluorescent probe for the detection pyrophosphate (PPi) in methanol/urotropine buffer medium (1:1, v/v, pH 4.5). The probe displayed fluorescence “turn-on” response towards Al 3+ with high specificity. Due to the cleaving of the -C N bond and subsequent creation of complex caused by coordination with Al 3+ , the chelation-enhanced fluorescence (CHEF) effect was activated, resulting in a significantly enhancement fluorescence response. Further, 1 H NMR titration and HRMS analysis revealed that the Al 3+ induced hydrolysis occurs on one side of the Schiff base and led to the formation of free primary amine compound. Moreover, the binding mechanism was also recognized density functional theory (DFT) studies. Due to the strong binding ability of PPi and Al 3+ , PPi could remove Al 3+ from the complex, causing fluorescence quenching. The specific determination of Al 3+ and PPi with the detecting limit of 31.6 nM and 56.8 nM. Due to its good biocompatibility, the sensor was successfully applied to fluorescence imaging of Al 3+ and PPi in HeLa cells and zebrafish. The results show that HBD has broad application prospects in environmental and biological analysis.
研究领域:
生命科学
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环境科学
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生物化学
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DOI
高影响因子
Analytical Methods
·
2015
·Vol. 7
·期 16
·6799-6803
·
IF 1.821
Jing-Can Qin,Xiao-ying Cheng,Kai-chao Yu,Ran Fang,Ming-fang Wang,Zheng-yin Yang
A novel Schiff-base fluorescent sensor (HL) for Al3+ has been synthesized. The addition of Al3+ results in a significant increase of its fluorescent intensity at 420 nm in ethanol, however, other metal ions have almost no influence on the fluorescence. The reason for this phenomenon might be attributed to the formation of a 1 : 1 stoichiometric L–Al complex which inhibits the photo-induced electron transfer (PET) process. More importantly, the proposed binding mode of L–Al(III) is further identified by theoretical calculations.
研究领域:
化学
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材料科学
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理论计算
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DOI
高影响因子
CRYSTENGCOMM
·
2025
·
IF 2.6
Sheng Lv,Liangcheng Song,Yanling Xu,Hongyan Cui,Chongqiang Zhu,Chunhui Yang
The development of high-performance infrared (IR) nonlinear optical (NLO) crystals with ultra-wide bandgaps (>4.0 eV) is crucial for advancing laser technologies, yet achieving a balance between wide bandgaps and strong NLO responses remains challenging. A trivalent aliovalent substitution strategy is reported in this work to engineer diamond-like (DL) halides, CuAlX4 (X = Cl, Br), which simultaneously achieve record-wide bandgaps (4.25 eV for CuAlCl4 and 4.09 eV for CuAlBr4), high laser-induced damage threshold (LIDT) values (46.2 MW cm−2 and 33.9 MW cm−2, respectively), and competitive second-harmonic generation (SHG) coefficients (3.52 pm V−1 and 7.12 pm V−1 at 2.09 μm, respectively). Structural characterization and first-principles calculations reveal that the introduction of Al3+ induces asymmetric [CuX4] tetrahedra and cationic vacancies, breaking inversion symmetry and enhancing hyperpolarizability. The synergistic effects of increased valence electron concentration and optimized tetrahedral alignment result in exceptional optical properties, including broad transparency and type-I phase-matching behavior. This work demonstrates the potential of high-valence substitution for designing DL halides with ultra-wide bandgaps and robust NLO performance, offering new insights for IR optoelectronic applications.
研究领域:
材料科学
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光学
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固体物理
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红外技术
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晶体工程
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产品关联
DOI
高影响因子
ChemPlusChem
·
2026
·Vol. 91
·期 6
·e70195
·
IF 3.1
Zhanwang Li,Bing Liu,Hong Yang,Yubao Bi,Sihui Wu,Mingyue Wang,Yuncong Xu,Wenfeng Han
Achieving high dispersion and stability of noble metals on conventional supports remains a key challenge in catalysis. Herein, we address this issue by designing an alumina support enriched with pentacoordinated Al 3+ (Al 3+ penta) sites, which serve as effective anchoring centers for Pd species. The catalyst was applied to the gas-phase hydrogenation of hexafluoropropylene (HFP), a critical step in the synthesis of the low-global-warming-potential refrigerant HFO-1234yf. Comprehensive characterization, including 27 Al MAS NMR, XPS, and HRTEM suggest that the Al 3+ penta sites strongly interact with Pd, forming Pd-O-Al bridge structures, thereby suppressing Pd aggregation and enhancing Pd dispersion. The optimized 0.5 wt% Pd/EA-Al 2 O 3 catalyst achieved approximately 92% HFP conversion at 90°C, significantly outperforming conventional Pd/γ-Al 2 O 3 counterpart. This work underscores the decisive role of Al 3+ penta sites in regulating metal-support interactions and provides a viable strategy for designing efficient catalysts with reduced noble-metal loadings. Graphical The abundant penta-coordinated Al 3+ sites in EA-Al 2 O 3 strongly anchor PdO through the formation of stable Pd-O-Al linkages, enabling PdO to remain oxidized and highly dispersed even after H 2 reduction. In contrast, PdO on commercial γ-Al 2 O 3 is fully reduced to metallic Pd and undergoes significant agglomeration. This anchoring effect markedly enhances the catalytic activity and stability in the hydrogenation of HFP to HFC-236ea.
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DOI
PubMed
高影响因子
CATALYSIS COMMUNICATIONS
·
2019
·
IF 3.674
Tingwei Zhang,Wenzhi Li,Haosheng Xin,Lele Jin,Qiying Liu
An Al 3+ -modified formaldehyde-p-hydroxybenzenesulfonic acid resin catalyst (Al-SPFR) was synthesized through a hydrothermal method. N 2 adsorption–desorption experiment and acid–base titration revealed that the Al-SPFR catalyst had better texture properties and higher strong acid content than the previously prepared unmodified SPFR . The effects of reaction time and temperature, catalyst loading, and water content in water/GVL mixture were investigated for glucose dehydration using Al-SPFR as the catalyst. An HMF yield of 47.4% was obtained at 170 °C for 2 h in the biphasic GVL/H 2 O medium. Further performing a five-cycle experiment, the HMF yield initially decreased and then remained fairly constant, and the recyclability of the Al-SPFR was reasonable.
研究领域:
化学工程
·
催化化学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Jiayi Zhong,Qiming Chen,Caixia Guo,Wenchao Peng,Yang Li,Fengbao Zhang,Xiaobin Fan
Transition metal Co-based materials such as layered double hydroxides (LDHs) are recognized as the pre-catalysts that will undergo the electrochemical reconstruction under oxygen evolution reaction (OER) conditions, in which the formed high-valent Co 4+ can offer high intrinsic activity. However, the controllable formation of highly active Co 4+ species still remains challenging. Herein, we show that the leaching of Al 3+ after OER activation successfully induces the high-valent Co 4+ formed on CoFeAl LDH (CFA 0.8 -LDH/NF–200CV), which is confirmed by a series of physical characterization and electrochemical measurements. The reconstructed electrocatalyst CFA 0.8 -LDH/NF–200CV presents excellent OER performance with an overpotential of 222 mV at 10 mA cm −2 and a small Tafel slope of 25.4 mV dec −1 . This work may enlighten the surface reconstruction and activity promotion with leachable cations to induce high-valent metal active sites of other electrocatalysts.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
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