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Open Access Article
1 - A review of the sorbents based on covalent organic frameworks containing hybrids for extraction methods
Mohammad Javad Aghajani Milad Ghani Jahan Bakhsh RaoofCovalent organic frameworks have been used as a group of porous organic frameworks due to their remarkable intrinsic properties, such as high specific surface area and variable pore size as well as high stability. Also, they are flexible that by producing functional cov MoreCovalent organic frameworks have been used as a group of porous organic frameworks due to their remarkable intrinsic properties, such as high specific surface area and variable pore size as well as high stability. Also, they are flexible that by producing functional covalent organic frameworks or polystructures based on them, major changes in their physical and chemical properties can be made. In this article, several important groups of covalent organic frameworks are examined in terms of their design and manufacturing methods. Also, synergism of covalent organic frameworks with other materials, such as different types of magnetic nanoparticles, metal/metal oxide, silica, carbon nanomaterials, polymers, polyoxometalates and metal-organic frameworks are studied. Finally, recent applications of covalent organic frameworks as efficient adsorbents in sample preparation methods such as solid phase extraction, diffusion solid phase extraction, magnetic solid phase extraction and fibrous solid phase microextraction with emphasis on important factors that lead to increased efficiency It will be extracted and will be checked. Investigations have shown that hybrid formation of organic-covalent frameworks and other compounds, including polymers, can be effective in improving the performance of these compounds. It is important to note that an essential step during the synthesis of covalent organic frameworks is their design concept. The purpose of design is the specific orientation of covalent bonds between the functional groups of constituents (node and linker), types of bonds and types of topologies with pore sizes that require engineering. In addition, the challenges in these approaches will also be discussed. Manuscript profile -
Open Access Article
2 - Porous polymers and recent developments in organic covalent frameworks applications in magnetic solid phase extraction method for use in food analysis
Parastoo Fooladi Milad GhaniMagnetic Covalent Organic Frameworks are one of the adsorbents used in Magnetic Solid-Phase Extraction, which are due to easy synthesis, compatibility with the environment, high porosity, easy changes of functional groups and structures. pre-engineered, have been widely MoreMagnetic Covalent Organic Frameworks are one of the adsorbents used in Magnetic Solid-Phase Extraction, which are due to easy synthesis, compatibility with the environment, high porosity, easy changes of functional groups and structures. pre-engineered, have been widely used in food extraction and analysis. In this paper, the polymer-based MSPE method of MCOF will be described. Also, the latest design and fabrication methods of various MCOFs will be briefly explained. is given. The development and application of MCOFs combined with MSPE technology shows great potential in food safety monitoring. MCOFs are due to their unique structural and chemical properties such as strong magnetic properties, high specific surface area, functional groups, permanent porosity and Excellent chemical stability, excellent magnetic adsorbent are considered. Functional groups of MCOFs with monomers or polymers that contain different functional groups are a scientific approach to develop new MCOFs that can effectively adsorb contaminants in food. Effectively texture effect. removes, and improves extraction efficiency. This review describes the recent progress in the application of MCOFs in the preconcentration and analysis of pesticides, pharmaceuticals, polymer additives, pyrolysis products and other types of food contaminants. Finally, it examines future challenges and possible solutions in the analysis of the food samples. Manuscript profile
List of Articles Covalent organic frameworks
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