N- and S-rich covalent organic framework for highly efficient removal of indigo carmine and reversible iodine capture

CN linked covalent organic framework for the efficient adsorption of iodine in vapor and solution

“…Among them, inorganic adsorbents, 7,8 such as ion-exchange zeolites 9,12,13 and silver-functionalized silica aerogels, 10,11 usually exhibit high cost, low uptake capacities and instability toward water and moisture. In recent years, metal-organic frameworks (MOFs) [14][15][16][17][18][19][20] and porous organic polymers (POPs), [21][22][23][24][25] which include conjugated microporous polymers (CMPs), 25,26 covalent triazine frameworks (CTFs), 27 charged porous aromatic frameworks (PAFs) 21,28,29 and covalent organic frameworks (COFs), 24,[30][31][32][33][34][35][36][37][38][39][40][41] have attracted a lot of attention for worthwhile iodine capture. POPs have been found to exhibit high potential for iodine capture and storage due to their high surface area, and the high interaction between adsorbents and iodine.…”

Fluorescent aminal linked porous organic polymer for reversible iodine capture and sensing

“…For example, Liu et al reported the preparation of novel thiophene-based porous organic networks that can capture up to 204 wt.% of iodine 28 . More recently, Pan et al developed N- and S-rich covalent organic framework (COFs) possessing high iodine uptake of 276 wt.% 29 . Triazine-based conjugated polymers have also been reported to have respectable iodine uptake, presumably due to their nitrogen-rich nature 4 , 15 , 30 – 35 .…”

“…iodine 28 . More recently, Pan et al developed N-and S-rich covalent organic framework (COFs) possessing high iodine uptake of 276 wt.% 29 . Triazine-based conjugated polymers have also been reported to have respectable iodine uptake, presumably due to their nitrogen-rich nature 4,15,[30][31][32][33][34][35] .…”

A New Squaraine‐Linked Triazinyl‐Based Covalent Organic Frameworks: Preparation, Characterization and Application for Sensitive and Selective Determination of Fe3+ Cations

“…COFs are linked by strong covalent bonds, such as B−O, C=N, C−N, B−N, and N=N bond linkages, which make them more stable and lower in density. Due to their remarkable properties, COFs present the potential in many specific functional applications, including gas storage and separation,[4] heterogeneous catalyst, photocatalysis, dye adsorption, optoelectricity, fluorescence detection, drug delivery, separation analysis, electric analysis, power storage, detection and adsorption of radioactive substances, and so on. At present, there are more and more functional COFs about fluorescence detection were reported.…”