Application of Covalent Organic Porous Polymers-Functionalized Basalt Fibers for in-Tube Solid-Phase Microextraction

Jiang, Qiong; Xu, Peng; Feng, Juanjuan; Sun, Min

doi:10.3390/molecules25245788

Cited by 10 publications

(7 citation statements)

References 38 publications

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“…On the other hand, vibrational modes typical of the formation of secondary amine groups appear on polymers, namely C-N bending (813 cm −1 ), C-N elongations of (-HN-C(R)-NH-) function (1153 cm −1 ), C-NAr elongations of secondary arylamine moieties (1342 cm −1 ), and N-H elongation band (centered at 3384-3393 cm −1 ), confirming their polyaminal structure. At 1542 cm −1 and 1475 cm −1 are also observed C=N vibration bands characteristic of the heteroaromatic triazine rings incorporated into the polymeric backbones [25,37,[39][40][41].…”

Section: Infrared Spectroscopy (Ftir-atr)mentioning

confidence: 97%

Triazine-Based Porous Organic Polymers: Synthesis and Application in Dye Adsorption and Catalysis

2023

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The scientific community has been developing promising materials to increase the sustainability and efficiency of production processes and pollutant environmental remediation strategies. Porous organic polymers (POPs) are of special interest, as they are insoluble custom-built materials at the molecular level, endowed with low densities and high stability, surface areas, and porosity. This paper describes the synthesis, characterization, and performance of three triazine-based POPs (T-POPs) in dye adsorption and Henry reaction catalysis. T-POPs were prepared by a polycondensation reaction between melamine and a dialdehyde (terephthalaldehyde (T-POP1) or isophthalaldehyde derivatives with a hydroxyl group (T-POP2) or both a hydroxyl and a carboxyl group (T-POP3)). The crosslinked and mesoporous polyaminal structures, with surface areas between 139.2 and 287.4 m2 g−1, positive charge, and high thermal stability, proved to be excellent methyl orange adsorbents, removing the anionic dye with an efficiency >99% in just 15–20 min. The POPs were also effective for methylene blue cationic dye removal from water, reaching efficiencies up to ca. 99.4%, possibly due to favorable interactions via deprotonation of T-POP3 carboxyl groups. The modification of the most basic polymers, T-POP1 and T-POP2, with copper(II) allowed the best efficiencies in Henry reactions catalysis, leading to excellent conversions (97%) and selectivities (99.9%).

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Section: Infrared Spectroscopy (Ftir-atr)mentioning

confidence: 97%

Triazine-Based Porous Organic Polymers: Synthesis and Application in Dye Adsorption and Catalysis

2023

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“…In addition to MOFs and COFs, other POPs like covalent triazine frameworks and porous aromatic frameworks (PAFs) have also displayed promising adsorption properties for pharmaceutical analysis [83][84][85][86][87].…”

Section: Other Porous Materials In Pharmaceutical Analysismentioning

confidence: 99%

Advanced porous organic materials for sample preparation in pharmaceutical analysis

Zhang

Huang

et al. 2023

J of Separation Science

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The development of novel sample preparation media plays a crucial role in pharmaceutical analysis. To facilitate the extraction and enrichment of pharmaceutical molecules in complex samples, various functionalized materials have been developed and prepared as adsorbents. Recently, some functionalized porous organic materials have become adsorbents for pharmaceutical analysis due to their unique properties of adsorption and recognition. These advanced porous organic materials, combined with consequent analytical techniques, have been successfully used for pharmaceutical analysis in complex samples such as environmental and biological samples. This review encapsulates the progress of advanced porous materials for pharmaceutical analysis including pesticides, antibiotics, chiral drugs, and other compounds in the past decade. In addition, we also address the limitations and future trends of these porous organic materials in pharmaceutical analysis.

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“…The absorption peaks at 1528.30 and 1432.03 cm -1 are attributed to C-N stretching vibration of the triazine ring, while the signal at 810.77 cm -1 belongs to C-N bending vibration. The band at 1022.85 cm -1 also corresponds to C-N stretching vibration [55,56]. FTIR spectrum of the green CDs showed a broad band at 3028.82-3461.43 cm −1 attributed to N-H and O-H Bovine serum albumin, HAuCl 4 , and Hg 2+ 18.9 ppb 63-1261 ppb 60 raw milk and milk powder CDs as turn-on fluorescent sensor [43] Triammonium citrate and Na 2 HPO 4 coupled to Hg 2+ 0.08 ppm 0.1-2.…”

Section: Mechanism Of Interaction Between Cds and Melaminementioning

confidence: 99%

Carbon dots derived from citric acid and urea as fluorometric probe for determining melamine contamination in infant formula sample

Phimmasone,

Boonsri,

Siangproh

et al. 2023

Methods Appl. Fluoresc.

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Melamine has been intentionally added into food products to increase the protein count at less cost, especially in dairy products for infant resulting in serious adverse effects on health of consumers. Therefore, this study aimed to develop a method to quantify melamine in dairy products based on the change of fluorescent properties of carbon dots (CDs) as sensing probe. CDs with green-fluorescent emission were synthesized from citric acid and urea under microwave irradiation. The synthesized CDs emitted fluorescence at the maximum wavelength of 538 nm with excitation wavelength of 410 nm. Thus, they provided high sensitivity and selectivity on melamine detection by which fluorescent emission of the CDs was increasingly quenched upon increasing melamine concentrations. Optimal conditions for melamine determination using the CDs was under pH 6, volume ratio between CDs and sample of 2:8 and reaction time of 15 min. The developed method provided high precision of melamine determination with less than 5% of %RSD (n = 5), wide detection range from 1.0 to 200.0 ppm, and high sensitivity with limit of detection (LOD) of 0.47 ppm and limit of quantification (LOQ) of 1.56 ppm, which is within the regulated level by the Food and Drug Administration of the United States for melamine in dairy products. Several analytical characterization techniques were conducted to elucidate the reaction mechanism between CDs and melamine, and the hydrogen bonding interaction was proposed.

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Application of Covalent Organic Porous Polymers-Functionalized Basalt Fibers for in-Tube Solid-Phase Microextraction

Cited by 10 publications

References 38 publications

Triazine-Based Porous Organic Polymers: Synthesis and Application in Dye Adsorption and Catalysis

Triazine-Based Porous Organic Polymers: Synthesis and Application in Dye Adsorption and Catalysis

Advanced porous organic materials for sample preparation in pharmaceutical analysis

Carbon dots derived from citric acid and urea as fluorometric probe for determining melamine contamination in infant formula sample

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