Mar 3, 2025 · In this study, two distinct Tp-based COFs with different functional groups using a solvothermal technique, TpPa-1 with −H and TpPa-2 with −Me (methyl), respectively, is synthesized.

Nov 15, 2016 · The imine linkages of two layered, porous covalent organic frameworks (COFs), TPB-TP-COF ( [C 6 H 3 (C 6 H 4 N) 3] 2 [C 6 H 4 (CH) 2] 3, 1) and 4PE-1P-COF ( [C 2 (C 6 H 4 N) 4] [C 6 H 4 (CH) 2] 2, 2), have been transformed into amide linkages to make the respective isostructural amide COFs 1′ and 2′ by direct oxidation with retention of crystall...

Nov 5, 2020 · The TTA-TP−COF is chemically linked to g-C 3 N 4 through imine bond between the terminal amino groups of carbon nitride and the aldehyde groups of TP (Fig. 15). The chemical bond between the two components of the g-C 3 N 4 /COF composite material facilitates the separation and transfer of the photogenerated carriers, and thus a high visible ...

Apr 5, 2023 · The 1,3,5-triformylphloroglucinol (Tp)-based COFs are the most primary linkage in assembling β-keto-enamine COFs, also named Tp-COFs. Tp-COFs are a type of highly stable COFs, known earlier by researchers, that were considered …

Mar 15, 2023 · In this study, we have successfully synthesized an imine-based TP-COF with periodic square lattice by Schiff base reaction between TPE-Ph-CHO and TAPP, which was used as a heterogeneous photocatalyst for effective photocatalytic H 2 evolution from water under visible light irradiation. TP-COF exhibits excellent porosity, crystallinity and ...

Sep 6, 2023 · Having demonstrated the self-assembly of spherical TAPB-BTCA-COF particles into colloidal PhCs, we extended the formation of COF-based PhCs to a second imine-linked COF, hereafter termed TAPB-TP-COF (where TP is terephthalaldehyde; Figure 4a).

Nov 4, 2020 · TPB-TP-COF, the homolog to TPB-DMTP-COF but without methoxy groups, and TPB-DHTP-COF (DHTP, dihydroxy terephthaldehyde) with -OH functionalities that permit intramolecular H-bonding, both exhibited lower chemical stabilities, revealing the pivotal stabilization effects of methoxy groups.

Sep 21, 2015 · We developed a novel structure, TPB-DMTP-COF (TPB, triphenylbenzene; DMTP, dimethoxyterephthaldehyde), that possesses C3 -TPB vertices and electron-donating (lone pairs on the oxygen)...

May 29, 2020 · 1KT-Tp COF, 2KT-Tp COF, and 4KT-Tp COF were newly synthesized by solvothermal Schiff-base condensa-tion of Tp (as the knot) with different redox linkers including 2,7-diamino-9H-fluoren-9-one (1KT-BD),40 2,7-diaminophenanthrene-9,10-dione (2KT-BD),37 and 2,7-diaminopyrene-4,5,9,10-tetraone (4KT-BD). The ear-

Mar 5, 2020 · Covalent organic frameworks (COFs) enable precise reticulation of organic building units into extended 2D and 3D open networks using strong covalent bonds to constitute predesignable topologies and tunable pore structures, presenting an emerging class of crystalline porous polymers.