Jun 5, 2024 · We observe liquid–liquid phase separation, pointing to the existence of structured solvents in the form of surfactant-free (micro)emulsions in conventional COF synthesis.

Jan 2, 2025 · Here, we show COFs with 2.5-dimensional (2.5D) skeletons, which are microscopically constructed with 3D bonds but have macroscopically 2D planar shapes.

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.

Aug 15, 2023 · We will demonstrate here how functionalities can be embedded into defined regions of COF films by adding time-resolution control to reticular chemistry. In COFs the small building blocks are linked together using covalent bonds, which results in a framework with considerable rigidity and stability.

Mar 31, 2025 · Although tailored porosity is a defining feature of layered, two-dimensional (2D) polymers known as 2D covalent organic frameworks (COFs), understanding the interplanar stacking of 2D COFs and their resulting three-dimensional (3D) pore structure remains challenging. Here, we use scanning transmission electron microscopy and ptychography, an emerging 3D angstrom-scale imaging method, to study ...

The new porous material for capturing carbon dioxide, called a covalent organic framework (COF), has hexagonal channels decorated with polyamines that efficiently bind CO 2 molecules (blue and...

Covalent organic frameworks (COFs) are 2D molecular networks formed through covalent self-assembly of precursor molecules (two examples are shown in Fig. 1).1 COFs provide a new strategy for creating 2D materials by designing the unit cell as a molecule and then stitching the unit cells together into a crystal through molecular self-assembly.2 T...

Covalent organic frameworks (COFs) can exhibit high specific surface area and catalytic activity, but traditional solution-based synthesis methods often lead to insoluble and infusible powders or fragile films on solution surface.

Jun 1, 2021 · Covalent organic frameworks (COFs) are the emerging type of organic crystalline porous materials, prepared through reticular chemistry with building blocks featuring light elements (such as C, H, O, N, or B atoms), and connected through the covalent bond and extended into two or three dimensions.

May 9, 2024 · 2D covalent organic frameworks (COFs) are highly porous crystalline materials with promising applications in organic electronics. Current methods involve either on-surface synthesis (solid surface) or interfacial synthesis (liquid/liquid, liquid/gas interface) to create thin films for these applications, each with its drawbacks.