Fluorine-Functionalized Covalent-Organic-Framework-Coated Stir Bar for the Extraction of Benzoylurea Insecticides in Pear Juice and Beverage Followed by High-Performance Liquid Chromatography–Ultraviolet Detection

Zang, Lijuan; Ren, Yaoyao; He, Man; Chen, Beibei; Hu, Bin

doi:10.1021/acs.jafc.2c03983

Cited by 16 publications

(3 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the effect of "fluorine affinity", fCOFs have been used for the detection and adsorption of fluorinated pesticides. [69,70] For instance, a fCOF (COF-(CF 3 ) 2 ) synthesized by post-synthesis modification exhibits strong interaction with the fluorinated pesticides (Figure 4B). [45] Though the BET specific surface area after post-synthesis modification shows some decrease, COF-(CF 3 ) 2 still possesses a BET specific surface area of 1533 m 2 g −1 .…”

Section: Adsorptionmentioning

confidence: 99%

Fluorine‐Containing Covalent Organic Frameworks: Synthesis and Application

Cheng

Yang

et al. 2022

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Covalent organic frameworks (COFs) are a type of crystalline porous polymers that possess ordered structures and eternal pores. Because of their unique structural characteristics and diverse functional groups, COFs have been used in various application fields, such as adsorption, catalysis, separation, ion conduction, and energy storage. Among COFs, the fluorine‐containing COFs (fCOFs) have been developed for special applications by virtue of special physical and chemical properties resulting from fluorine element, which is a nonmetallic halogen element and possesses strong electronegativity. In the organic chemistry field, introducing fluorine into chemicals enables those chemicals to exhibit many interesting properties, and fluorine chemistry increasingly plays an important role in the history of chemical development. The introduction of fluorine in COFs can enhance the crystallinity, porosity, and stability of COFs, making COFs having superior performances and some new applications. In this review, the synthesis and application of fCOFs are systematically summarized. The application involves photocatalytic production of hydrogen peroxide, photocatalytic water splitting, electrocatalytic CO2 reduction, adsorption for different substances (H2, pesticides, per‐/polyfluoroalkyl substances, polybrominated diphenyl ethers, bisphenols, and positively charged organic dye molecules), oil−water separation, energy storage (e.g., zinc‐ion batteries, lithium−sulfur batteries), and proton conduction. Perspectives of remaining challenges and possible directions for fCOFs are also discussed.

show abstract

Section: Adsorptionmentioning

confidence: 99%

Fluorine‐Containing Covalent Organic Frameworks: Synthesis and Application

Cheng

Yang

et al. 2022

Macromol. Rapid Commun.

View full text Add to dashboard Cite

show abstract

“…Typically, COFs are stable and ordered crystalline structures with great potential in sample pretreatment [25][26][27][28][29]. As a highly effective adsorbent, COFs have been widely used in the enrichment of food hazards [30][31][32] and the removal of environmental pollutants [33][34][35]. However, most of COFs constructed with dynamic imine bonds suffer from instability, so it is essential to synthesize COFs based on irreversible chemical reactions.…”

Section: Introductionmentioning

confidence: 99%

Primary amide‐functionalized cyclotricatechylene covalent organic frameworks membrane for efficient enrichment of melamine and its derivatives in migration solution of food contact materials

Lin

Ouyang

et al. 2023

J of Separation Science

View full text Add to dashboard Cite

A highly chemically stable primary amide-functionalized cyclotricatechylene covalent organic framework was synthesized by an irreversible reaction and a post-synthetic modification. It possessed a rod-like morphology and exhibited strong solvent stability owing to the polyether bonds. The material showed good adsorption performance for melamine and its derivatives and adsorption mechanism was investigated by molecular simulations. The adsorbent was coated on the nylon-66 membrane to prepare the enrichment membrane. Under optimized conditions, an in-syringe membrane-based extraction method, combined with ultra-high performance liquid chromatography-tandem mass spectrometry was developed for the analysis of melamine and six melamine derivatives in the migration solution. A good linearity was obtained with correlation coefficients ranging from 0.9924 to 0.9995. The limits of detection were 1-200 ng/L and the limits of quantification were 3-500 ng/L. This method was successfully applied to the migration solution of sushi bamboo rolling mats with spiked recoveries of 73.2%-115% and relative standard deviations of 0.9%-9.9%. This work shows a practical and perspective approach for the efficient enrichment of food contact material hazards.

show abstract

“…The adsorption affinity of adsorbents (FSMP-2 and ASMP) toward adsorbates (TePT and 5CT) can be reflected by the ΔH ads , 45 which were calculated by DFT (Figure 5). The ΔH ads between TePT and FSMP-2 (−188.38 kJ mol −1 ) was significantly lower than that between TePT and ASMP (−18.65 kJ mol −1 ).…”

Section: ■ Introductionmentioning

confidence: 99%

Tunable Fluorine-Functionalized Scholl-Coupled Microporous Polymer for the Selective Adsorption and Ultrasensitive Analysis of Environmental Liquid-Crystal Monomers

et al. 2023

View full text Add to dashboard Cite

Liquid-crystal monomers (LCMs), especially fluorinated biphenyls and analogues (FBAs), are identified to be an emerging generation of persistent organic pollutants. However, there is a dearth of information about their occurrence and distribution in environmental water and lacustrine soil samples. Herein, a series of fluorine-functionalized Scholl-coupled microporous polymers (FSMP-X, X = 1–3) were designed and synthesized for the highly efficient and selective enrichment of FABs. Their hydrophobicity, porosity, chemical stability, and adsorption performance (capacity, rate, and selectivity) were regulated preciously. The best-performing material (FSMP-2) was employed as the on-line fluorous solid-phase extraction (on-line FSPE) adsorbent owing to its high adsorption capacity (313.68 mg g–1), fast adsorption rate (1.05 g h–1), and specific selectivity for FBAs. Notably, an enrichment factor of up to 590.2 was obtained for FSMP-2, outperforming commercial C18 (12.6-fold). Also, the underlying adsorption mechanism was uncovered by density functional theory calculations and experiments. Based on this, a novel and automated on-line FSPE-high-performance liquid chromatography method was developed for ultrasensitive (detection limits: 0.0004–0.0150 ng mL–1) and low matrix effect (73.79–113.3%) determination of LCMs in lake water and lacustrine soils. This study offers new insight into the highly selective quantification of LCMs and the first evidence for their occurrence and distribution in these environmental samples.

show abstract

Fluorine-Functionalized Covalent-Organic-Framework-Coated Stir Bar for the Extraction of Benzoylurea Insecticides in Pear Juice and Beverage Followed by High-Performance Liquid Chromatography–Ultraviolet Detection

Cited by 16 publications

References 43 publications

Fluorine‐Containing Covalent Organic Frameworks: Synthesis and Application

Fluorine‐Containing Covalent Organic Frameworks: Synthesis and Application

Primary amide‐functionalized cyclotricatechylene covalent organic frameworks membrane for efficient enrichment of melamine and its derivatives in migration solution of food contact materials

Tunable Fluorine-Functionalized Scholl-Coupled Microporous Polymer for the Selective Adsorption and Ultrasensitive Analysis of Environmental Liquid-Crystal Monomers

Contact Info

Product

Resources

About