Fabrication of edge-curled petals-like covalent organic frameworks and their properties for extracting indole alkaloids from complex biological samples

Sun, Fanrong; Bai, Ligai; Li, Mingxue; Chang-qing, YU; Liu, Haiyan; Qiao, Xiaoqiang; Yan, Hongyuan

doi:10.1016/j.jpha.2020.12.006

Cited by 14 publications

(2 citation statements)

References 49 publications

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“…These structures include 0-dimensional (0D, nanoparticles), [19][20][21] 1-dimensional (1D nanowires and nanotubes), 22,23 2-dimensional (2D nanosheets) [24][25][26] and 3-dimensional (3D petals-like structures and urchin-like). 27,28 Obviously, the 3D structure facilitates electrolyte penetration, electron transfer, and provides a larger reaction area, and does not easily lead to structural aggregation. [29][30][31][32] In order to prepare 3D structures, several methods were tested.…”

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confidence: 99%

Experimental and Theoretical Exploration of In Situ Grown Fe₃S₄/Co₃S₄ Heterostructure as Efficient Catalyst for I₃ ⁻ Reduction Reaction

Wang¹,

Gao²,

Zuo³

et al. 2022

J. Electrochem. Soc.

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Evolving low-cost transition metal sulfides heterostructures using simple yet high-efficiency synthesis methods to be grown directly on fluorine-doped tin oxide glass (FTO) as a counter electrode (CE) is an immense challenge for dye-sensitized solar cells (DSSCs). Herein, Fe3S4/Co3S4 heterostructures with urchin-like structures were uniformly deposited on FTO substrates by a two-step hydrothermal reaction. DSSC constructed with the Fe3S4/Co3S4 CE achieves high power conversion efficiency (8.43%), which is better than the pure Pt CE (7.60%) measured under the same circumstances. The high performance comes down to the fact that Fe3S4/Co3S4 grows directly on the surface of FTO and achieves the uniform film thickness, which is conducive to the full contact of the electrolyte and accelerates the charge transfer. Moreover, density functional theory (DFT) indicates that the charge density changes at the interface of Fe3S4/Co3S4 enhance the interaction between Fe 3d orbitals and I 5p orbitals, thereby the synergistic effect between Fe3S4 and Co3S4 achieving outstanding catalytic performance for I ions. This work paves the way for direct growth of heterostructure materials on substrates as electrodes avoiding subsequent complex processing for energy-related fields.

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confidence: 99%

Experimental and Theoretical Exploration of In Situ Grown Fe₃S₄/Co₃S₄ Heterostructure as Efficient Catalyst for I₃ ⁻ Reduction Reaction

Wang¹,

Gao²,

Zuo³

et al. 2022

J. Electrochem. Soc.

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“…白立改等: 基于新型分离介质的痕量物质萃取富集与高灵敏检测技术高复合分离介质稳定性. 河北大学白立改等 [131] 将制备的花瓣状边缘卷曲的卟啉基COFs引入到多孔有机聚合物(POPM)的制备中, 得到两种具有较大比表面积和多维孔结构的POPM/COFs整体复合分离介质, 对中草药和血浆中的吲哚类生物碱具有较好的选择性和富集能力. 桂林理工大学阮贵华等 [132] 采用离子液体功能化Zr-MOFs 为磁性固相萃取吸附剂, 利用氢键作用、π-π作用、…”

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The extraction, enrichment, and highly sensitive determination techniques based on new separation media

Bai¹,

Qiao²,

Yuan³

et al. 2021

Sci. Sin.-Chim

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The extraction, enrichment, and highly sensitive determination of trace components in complex matrices has always been a difficult and hot issue in the field of analytical chemistry, involving environmental pollution monitoring, food and drug safety analysis, and biological sample determination, which is related to human health closely. It is necessary to extract, separate, purify, and enrich trace target components in order to achieve highly sensitive and accurate determination. Therefore, sample pretreatment technique is a key procedure in the analysis of trace components. The core of most sample pretreatment techniques is the selection and optimization of separation medium, and the physical and chemical properties, such as the functional group composition and morphology structure of the separation medium, have important effects on its adsorption and extraction performance. This review summarizes the current progress of two major types of separation media, granular separation medium and monolithic separation medium, and the extraction, enrichment, and highly sensitive determination techniques based on new separation media, as well as their applications in the fields of environmental analysis, food analysis, biological analysis and pharmaceutical analysis.

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Photosensitized covalent organic framework as a light‐induced oxidase mimic for colorimetric detection of uric acid

Wang,

Li,

et al. 2024

Luminescence

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As large numbers of people are suffering from gout, an accurate, rapid, and sensitive method for the detection of gout biomarker, uric acid, is important for its effective control, diagnosis, and therapy. Although colorimetric detection methods based on uricase have been considered, they still have limitations as they produce toxic H2O2 and are expensive and not stable. Here, a novel uricase‐free colorimetric method was developed for the sensitive and selective detection of uric acid based on the light‐induced oxidase‐mimicking activity of a new photosensitized covalent organic framework (COF) (2,4,6‐trimethylpyridine‐3,5‐dicarbonitrile–4‐[2‐(4‐formylphenyl)ethynyl]benzaldehyde COF [DCTP–EDA COF]). DCTP–EDA COF has a strong ability to harvest visible light, and it could catalyze the oxidation of 1,4‐dioxane, 3,3′,5,5′‐tetramethylbenzidine under visible light irradiation to produce obvious color changes. With the addition of uric acid, however, the significant inhibition of the oxidase‐mimicking activity of DCTP–EDA COF remarkably faded the color, and thus uric acid could be colorimetrically detected in the range of 2.0–150 μM with a limit of detection of 0.62 μM (3σ/K). Moreover, the present colorimetric method exhibited high selectivity; uric acid level in serum samples was successfully determined, and the recoveries ranged from 96.5% to 105.64%, suggesting the high accuracy of the present colorimetric method, which demonstrates great promise in clinical analysis.

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Fabrication of edge-curled petals-like covalent organic frameworks and their properties for extracting indole alkaloids from complex biological samples

Cited by 14 publications

References 49 publications

Experimental and Theoretical Exploration of In Situ Grown Fe₃S₄/Co₃S₄ Heterostructure as Efficient Catalyst for I₃ ⁻ Reduction Reaction

Experimental and Theoretical Exploration of In Situ Grown Fe₃S₄/Co₃S₄ Heterostructure as Efficient Catalyst for I₃ ⁻ Reduction Reaction

The extraction, enrichment, and highly sensitive determination techniques based on new separation media

Photosensitized covalent organic framework as a light‐induced oxidase mimic for colorimetric detection of uric acid

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Fabrication of edge-curled petals-like covalent organic frameworks and their properties for extracting indole alkaloids from complex biological samples

Cited by 14 publications

References 49 publications

Experimental and Theoretical Exploration of In Situ Grown Fe3S4/Co3S4 Heterostructure as Efficient Catalyst for I3 − Reduction Reaction

Experimental and Theoretical Exploration of In Situ Grown Fe3S4/Co3S4 Heterostructure as Efficient Catalyst for I3 − Reduction Reaction

The extraction, enrichment, and highly sensitive determination techniques based on new separation media

Photosensitized covalent organic framework as a light‐induced oxidase mimic for colorimetric detection of uric acid

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Experimental and Theoretical Exploration of In Situ Grown Fe₃S₄/Co₃S₄ Heterostructure as Efficient Catalyst for I₃ ⁻ Reduction Reaction

Experimental and Theoretical Exploration of In Situ Grown Fe₃S₄/Co₃S₄ Heterostructure as Efficient Catalyst for I₃ ⁻ Reduction Reaction