Rapid, low temperature synthesis of molecularly imprinted covalent organic frameworks for the highly selective extraction of cyano pyrethroids from plant samples

Ji, Wenhua; Sun, Rihan; Geng, Yun; Liu, Wei; Wang, Xiao

doi:10.1016/j.aca.2017.12.001

Cited by 119 publications

(39 citation statements)

References 41 publications

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“…[2] COFs are usually prepared by solvothermal routes (i.e.,h eating COF precursors at 70-120 8Ci n organic solvents such as dioxane or mesitylene) within sealed vessels for al ong time of 2-9 days. [18,19] It is interesting to develop facile, rapid, low-energy,a nd environmentally benign routes for the synthesis of COF materials. [18,19] It is interesting to develop facile, rapid, low-energy,a nd environmentally benign routes for the synthesis of COF materials.…”

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confidence: 99%

Room‐Temperature Synthesis of Covalent Organic Framework (COF‐LZU1) Nanobars in CO₂/Water Solvent

Zhang

et al. 2018

ChemSusChem

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The development of facile, rapid, low-energy, environmentally benign routes for the synthesis of covalent organic frameworks (COFs) is of great interest. This study concerns the utilization of water containing dissolved CO as a solvent for the room-temperature synthesis of COF. The as-synthesized particles, denoted COF-LZU1, combine advantages of good crystallinity, nanoscale size, and high surface area, which suggests promising application as a support for heterogeneous catalysts. Moreover, this versatile CO -assisted method is also applicable for the room-temperature synthesis of Cu-COF-LZU1. This method gives rise to new opportunities for fabricating COFs and COF-based materials with different compositions and structures.

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confidence: 99%

Room‐Temperature Synthesis of Covalent Organic Framework (COF‐LZU1) Nanobars in CO₂/Water Solvent

Zhang

et al. 2018

ChemSusChem

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“…A similar yield and selective adsorption of targets were observed from reactions at 90°C (Supporting Information Table S1, entry 7). Imine‐linked molecularly imprinted covalent organic frameworks have been prepared in the previous work based on Schiff base reaction between 1,3,5‐tris(4‐aminophenyl) benzene and 2,6‐DAP using Sc(OTf) 3 as the catalyst . However, low IF values showed that 1,3,5‐tris(4‐aminophenyl) benzene is notsuitable for the recognition of FWAs (Supporting Information Table S1, entries 8 and 9).…”

Section: Resultsmentioning

confidence: 99%

“…MICOPs were produced in a mesitylene/dioxane solvent system (6:1 v/v) using a procedure from previous research, with slight modifications . The non‐polar solvent allows non‐covalent interactions and favors the formation of materials with uniform surface.…”

Section: Resultsmentioning

confidence: 99%

“…These bottles were shaken at 26°C for 120 min. After centrifugation, the supernatant was filtered through a 0.45 μm membrane before HPLC–DAD analysis, and the equilibrium adsorption capacity ( Q e , mg/g) was determined using the following formula :

Q_{normale} = (C_{normali} - C_{normale}) v / m

where C i (mg/L) and C e (mg/L) are the initial concentrations of FWA 368 before adsorption and the equilibrium concentration in the supernatant solution after adsorption; v (mL) is the volume of the working solutions and m (mg) is the mass of MICOPs or NICOPs.…”

Section: Methodsmentioning

confidence: 99%

“…After the supernatants were separated, the free concentrations of FWA 368 were measured with HPLC–DAD. The adsorption kinetic curve can be described by the following equation ,

Q_{normalt} = (C_{normali} - C_{normalt}) v / m

where Q t (mg/g) is the amount of FWA 368 adsorbed on the MICOPs or NICOPs at time t (min), and C t (mg/L) is the free concentration of FWA 368 in the supernatant solution at time t .…”

Section: Methodsmentioning

confidence: 99%

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Molecularly imprinted covalent organic polymers for the selective extraction of benzoxazole fluorescent whitening agents from food samples

Ding

Wang

et al. 2018

J of Separation Science

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Molecularly imprinted covalent organic polymers were constructed by an imine-linking reaction between 1,3,5-triformylphloroglucinol and 2,6-diaminopyridine and used for the selective solid-phase extraction of benzoxazole fluorescent whitening agents from food samples. Binding experiments showed that imprinting sites on molecularly imprinted polymers had higher selectivity for targets compared with those of the corresponding non-imprinted polymers. Parameters affecting the solid-phase extraction procedure were examined. Under optimal conditions, actual samples were treated and the eluent was analyzed with high-performance liquid chromatography with diode-array detection. The results showed that the established method has a wide linearity, satisfactory detection limits and quantification limits, and acceptable recoveries. Thus, this developed method possesses the practical potential for the selective determination of benzoxazole fluorescent whitening agents in complex food samples.

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Porous Organic Frameworks: Advanced Materials in Analytical Chemistry

et al. 2018

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Porous organic frameworks (POFs), a general term for covalent‐organic frameworks (COFs), covalent triazine frameworks (CTFs), porous aromatic frameworks (PAFs), etc., are constructed from organic building monomers with strong covalent bonds and have generated great interest among researchers. The remarkable features, such as large surface areas, permanent porosity, high thermal and chemical stability, and convenient functionalization, promote the great potential of POFs in diverse applications. A critical overview of the important development in the design and synthesis of COFs, CTFs, and PAFs is provided and their state‐of‐the‐art applications in analytical chemistry are discussed. POFs and their functional composites have been explored as advanced materials in “turn‐off” or “turn‐on” fluorescence detection and novel stationary phases for chromatographic separation, as well as a promising adsorbent for sample preparation methods. In addition, the prospects for the synthesis and utilization of POFs in analytical chemistry are also presented. These prospects can offer an outlook and reference for further study of the applications of POFs.

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Rapid, low temperature synthesis of molecularly imprinted covalent organic frameworks for the highly selective extraction of cyano pyrethroids from plant samples

Cited by 119 publications

References 41 publications

Room‐Temperature Synthesis of Covalent Organic Framework (COF‐LZU1) Nanobars in CO₂/Water Solvent

Room‐Temperature Synthesis of Covalent Organic Framework (COF‐LZU1) Nanobars in CO₂/Water Solvent

Molecularly imprinted covalent organic polymers for the selective extraction of benzoxazole fluorescent whitening agents from food samples

Porous Organic Frameworks: Advanced Materials in Analytical Chemistry

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Rapid, low temperature synthesis of molecularly imprinted covalent organic frameworks for the highly selective extraction of cyano pyrethroids from plant samples

Cited by 119 publications

References 41 publications

Room‐Temperature Synthesis of Covalent Organic Framework (COF‐LZU1) Nanobars in CO2/Water Solvent

Room‐Temperature Synthesis of Covalent Organic Framework (COF‐LZU1) Nanobars in CO2/Water Solvent

Molecularly imprinted covalent organic polymers for the selective extraction of benzoxazole fluorescent whitening agents from food samples

Porous Organic Frameworks: Advanced Materials in Analytical Chemistry

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Room‐Temperature Synthesis of Covalent Organic Framework (COF‐LZU1) Nanobars in CO₂/Water Solvent

Room‐Temperature Synthesis of Covalent Organic Framework (COF‐LZU1) Nanobars in CO₂/Water Solvent