JOURNAL OF LUMINESCENCE
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2014
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IF 2.367
Xing-Pei Ye,Shao-bo Sun,Ying-dong Li,Li-hua Zhi,Wei-na Wu,Yuan Wang
A new o -aminophenol-based fluorogenic chemosensor methyl 3,5-bis(( E )-(2-hydroxyphenylimino)methyl)-4-hydroxybenzoate 1 have been synthesized by Schiff base condensation of methyl 3,5-diformyl-4-hydroxybenzoate with o -aminophenol, which exhibits high selectivity and sensitivity toward Al 3+ . Fluorescence titration studies of receptors 1 with different metal cations in CH 3 OH medium showed highly selective and sensitive towards Al 3+ ions even in the presence of other commonly coexisting metal ions. The detection limit of Al 3+ ions is at the parts per billion level. Interestingly, the Al(III) complex of 1 offered a large Stokes shift (>120 nm), which can miximize the selfquenching effect. In addition, possible utilization of this receptor as bio-imaging fluorescent probe to detect Al 3+ in human cervical HeLa cancer cell lines was also investigated by confocal fluorescence microscopy .
研究领域:
生物化学
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分析化学
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细胞生物学
✓ 已验证
产品关联
DOI
高影响因子
CARBON
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2018
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IF 7.082
Huiyu Li,Yuan Xu,Li Zhao,Jie Ding,Mengyang Chen,Guangrui Chen,Yi Li,Lan Ding
The solid-phase pyrolysis method is widely used in the synthesis of fluorescent carbon dots (CDs) because of its large scale and solvent-saving advantages. However, CDs are inclined to agglomerate during the synthesis process, resulting in low quantum yield (QY) and inhomogeneous distribution of particle sizes. Here, a simple and effective solid dispersion surface pyrolysis method was used for the synthesis of tiny-carbon dots (T-CDs) with a high QY. Multi-walled carbon nanotubes (MWCNTs) were used as a support and 2-( N -morpholino)ethanesulfonic acid (MES) as a precursor. MES was uniformly dispersed on the surface of MWCNTs by hydrogen bonding and π-π interactions. Due to the excellent thermal conductivity and rigidity of MWCNTs, the precursor is carbonized without agglomeration. Compared with the CDs obtained by the direct pyrolysis method without the use of a solid support, the particle size of the T-CDs is small (0.69 ± 0.14 nm) and the QY increased from 17.8 to 42.8%. It is anticipated that this method will lead to the improvement of the QY of CDs. Applications of the T-CDs included fluorescence detection of rutin in pharmaceuticals, human urine, and human serum samples, and determination of Al 3+ in tap water samples.
研究领域:
材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Xiaoling Ling,Qingxin Han,Lulu Ning,Li Wang,Weisheng Liu
Salicylaldehyde acyl-hydrazone derivatives have been widely applied to design fluorescent probe for Al 3+ detection, but they are always restricted to detect Al 3+ in water and actual samples by their poor solubility, low sensitivity, and long response time. Biologically inspired, four salicylaldehyde acyl-hydrazone compounds were designed and synthesized and H 4 L 1 as one of them was selected for in-situ assembly of the ytterbium complex (FP-Al), which has been developed to be a new fluorescent probe for Al 3+ detection by the central mental displacement process. The in-situ structure transformation from FP-Al to Al-L was fully characterized by X-ray crystal structure analysis, 1 H NMR, FT-IR, and spectral analysis. The intrinsic driving force was explained and elaborated by theoretical calculation. FP-Al showed a significant visible fluorescence enhancement and near-infrared luminescence decreased upon the addition of Al 3+ . Compared with the ligand H 4 L 1 , FP-Al showed enhanced sensing performance during Al 3+ detection, especially in improving water solubility and selectivity to Al 3+ , promoting response speed, reducing background fluorescence and increase cell-membrane permeability. The application of spontaneous metal replacement reaction might be able to provide a new strategy to develop high-performance optical chemo-sensors.
研究领域:
分析化学
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材料科学
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生物化学
✓ 已验证
产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
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2025
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IF 3.4
Min Xue,Junjie Fu,Furui Shang,Gang Wang,Lei Zhang,Hongjuan Lv
Two acylhydrazone derivatives with long-chain alkyl groups, DHS (salicylaldehyde-based) and DHN (naphthaldehyde-based), were designed and synthesized. Both compounds exhibited supramolecular gelation abilities, and DHN was a supergelator for benzene. The single-crystal X-ray diffraction analysis revealed that DHS forms dimers via intermolecular hydrogen bonding. The powder X-ray diffraction (PXRD) studies showed that DHS adopts different repeating units in benzene and propanol gels. Based on the results obtained from single-crystal structure, PXRD, and mass spectrometry measurements, a plausible self-assembly evolution of gelator molecules was proposed. This work demonstrated that the single-crystal structures could provide critical insights into the molecular packing of the gel state. The fluorescence spectra and in situ monitoring of the gelation process confirmed that both DHS and DHN possess typical aggregation-induced emission (AIE). Notably, DHS functions as a highly sensitive optical chemosensor for Al3+, achieving quantitative detection with a remarkable minimum detection limit of 4.79 nM.
研究领域:
材料科学
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超分子化学
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分析化学
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有机化学
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晶体学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
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2025
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IF 4.7
Huajian Song,Bingli Jiang,Chanming Mei,Huili Wei,Shumin Jiang,Liping Liu,Chenjie Jiang,Linmin Zou,Yongyang Gong
Nonconventional luminescent polymer materials (NLMs) hold great promise for advancing bioimaging due to their unique optical properties and biocompatibility. However, their practical applications are hindered by limitations such as nonemissive behavior in dilute solutions and difficulties in organelle-specific imaging. The cooperative effects of hydrogen bonding and n → π* interactions between amide groups could facilitate molecular clustering, thereby increasing the emission efficiency of NLMs in dilute solutions. To confirm this method, two water-soluble NLMs, P1 and P2, based on aspartic acid, were synthesized. These polymers exhibit remarkable photoluminescence quantum yields (5.42% and 3.11%) at a low concentration of 0.1 mg/mL, accompanied by concentration- and excitation wavelength-dependent emsission, and aggregation-induced emission (AIE) properties. Furthermore, both polymers demonstrate temperature-sensitive emission, excellent photostability, and low cytotoxicity, making them ideal candidates for various bioapplications. Importantly, P1 exhibits selective recognition of Al3+ ions with a low detection limit of 0.92 μM, significantly below the World Health Organization guideline of 7.4 μM. Additionally, both P1 and P2 demonstrate lysosomal targeting ability, suggesting their potential for diverse applications in cellular imaging and ion sensing.
研究领域:
生物成像
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材料科学
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分析化学
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细胞生物学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2017
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IF 5.401
Xue Hu,Xuanxiang Mao,Xiaodan Zhang,Yuming Huang
One-step approach was developed for the fast synthesis of copper nanoclusters (CuNCs), which were used as a fluorescent probe for the sensitive detection of Al 3+ in food samples. For this, aqueous CuSO 4 was reduced into CuNCs by dithiothreitol (DTT) at room temperature within 30 min. The synthetic process was fast, simple and easy. The DTT-capped CuNCs (DTT-CuNCs) were characterized by UV–vis absorption, fluorescence, FT-IR, TEM and XPS. The DTT-CuNCs display orange fluorescence with a maximum emission at 590 nm while excitation at 360 nm. The aggregation-induced fluorescence enhancement property of DTT-CuNCs in presence of Al 3+ was found. On this basis, we developed a simple, sensitive, selective turn-on fluorescent sensor for the detection of Al 3+ in food samples. Under the optimized conditions, the enhanced fluorescence intensity exhibited a good linear relationship with Al 3+ concentrations in the range from 0.01 μM to 7 μM with a detection limit of 0.01 μM. The DTT-CuNCs-based fluorescent probe has been successfully used to assay the content of aluminum in real food samples such as the fried food and pasta. These results demonstrate the great potential of the DTT-CuNCs-based fluorescence sensor for the routine estimation of Al 3+ content in food samples.
研究领域:
纳米技术
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分析化学
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食品科学
✓ 已验证
产品关联
DOI
高影响因子
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