Apr 6, 2022 · Here we present a reconstruction strategy for COF synthesis that uses a reversible and removable covalent tether to pre-organize monomers before an irreversible polymerization. This route...

May 23, 2022 · In this study, polyimide COFs (PI-COFs) are synthesized through the condensation reaction of pyromellitic dianhydride (PMDA) with tris (4-aminophenyl) amine (TAPA) and then doped in the TiO 2 photoelectrode of a dye-sensitized solar cell (DSSC) to co-work with N719 dye to explore their functionality.

Feb 1, 2024 · The downsized COF particles exhibit superior catalytic performance in electrochemical CO 2 reduction, with higher CO production rate and faradaic efficiency compared to conventional COF particles. The improved performance is attributed to the higher contact area with a conductive agent.

Aug 20, 2015 · Here we report modular optimization of covalent organic frameworks (COFs), in which the building units are cobalt porphyrin catalysts linked by organic struts through imine bonds, to prepare a catalytic material for aqueous electrochemical reduction of CO 2 to CO.

Aug 23, 2021 · Here, we find supercritical CO2 (sc-CO2) accelerates single-crystal polymerization by 10,000,000 folds, and produces two-dimensional (2D) COF single crystals with size up to 0.2 mm within 2~5 min.

Sep 6, 2023 · Here we show that porous covalent organic frameworks (COFs) can be used as colloidal building particles to fabricate porous PhCs with an underlying face-centered cubic (fcc) arrangement.

Apr 13, 2007 · In order to establish the phase purity and synthetic reproducibility of the COF materials, multiple samples were exhaustively imaged with scanning electron microscopy (SEM).

Jul 6, 2018 · Single crystals of COFs amenable to x-ray diffraction characterization have not been reported. Here, we developed a general procedure to grow large single crystals of three-dimensional imine-based COFs (COF-300, hydrated form …

Intrinsic properties of nanoscale covalent organic frameworks (nCOFs), such as suitable size, modular pore geometry and porosity, and straightforward post-synthetic modification via simple organic transformations, make them incredibly attractive for future nanomedicines.

May 15, 2024 · The microstructure of the skeletons of the two types of covalent organic frameworks (COFs) was characterized using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) (Fig. S5-7). These images showed that both COFs are made up of two-dimensional nanoflakes.