Dual functional N,O,P containing covalent organic frameworks for adsorping iodine and fluorescence sensing to p-nitrophenol and iodine

Easy Fabrication of Amorphous Covalent Organic Nanospheres Using Schiff‐Base Chemistry for Iodine Capture

“…[18] Covalent organic nanospheres (CONs), as novel spherical porous organic polymers, not only share the above-mentioned merits of POPs, but also show additional advantages such as nanospherical morphology, uniform size and good dispersion. [19] As can be expected, CONs show a remarkable potential as radioactive iodine adsorbents. However, to date, only a few studies about CONs for the capture of radioactive iodine have been reported.…”

“…The iodine adsorption measurement and release experiments were carried out according to the literature [19] with minor modifications. For the capture of volatile iodine, in a typical procedure, 10 mg of CON-TT powders and 500 mg of iodine were placed in 1.5 mL open glass bottles, respectively, and further put into a 20 mL glass vial at the same time.…”

An eight‐membered cyclosiloxane conjugated microporous polymer performed a rapid and sensitive fluorescence detection of 2,4‐dinitrophenol

“…The experimental results can be very clear from the Figure 5 that the fluorescence intensity of TMPS after swelling in the THF solvent is the highest among the seven solvents, which is consistent with the results under the 365 nm UV light irradiation. The strong luminosity under the UV light as well as the high fluorescence intensity are attributed to the extended conjugated structure and the donor‐receptor charge transfer in the structural network 1 …”

“…In recent years, porous materials have developed rapidly, with a variety of porous material types appearing. Now porous materials mainly include covalent organic frameworks (COFs), 1 metal organic frameworks (MOFs), 2 polyhedral oligomeric silsesquioxane (POSS), 3 covalent triazine‐based frameworks (CTFs), 4 porous aromatic frameworks (PAFs), 5 periodic mesoporous organosilicas (PMOs), 6 conjugated microporous polymers (CMPs), 7 and so on. Porous materials have quite excellent applications in gas adsorption storage, 8–10 heterogeneous catalysis, 11,12 separation, 13,14 energy storage, 15,16 and chemical sensing 17,18 .…”

Heterocyclic compounds bearing s-triazine and cyclotriphosphazene scaffolds: facile synthesis, hydrogen-bonded organic framework construction and fluorescent amine sensing

“…2,10 Furthermore, such molecules usually contain N, O, and P elements as hydrogen bonding sites, which can easily generate various non-covalent interactions, such as intermolecular hydrogen bonds, which then tend to form organic crystals with a definite and highly ordered molecular packing structure. 11,12 This can not only provide a model for exploring the "structure-property" relationship but also can tune the photophysical properties to achieve different optical functions. Therefore, it is important to synthesize heterocyclic compounds bearing s-triazine and cyclotriphosphazene scaffolds and develop their solid crystals through non-covalent interactions between molecules.…”