3D Imaging Reveals Widespread Stacking Disorder in Single Crystal 2D Covalent Organic Frameworks DOI
Priti Kharel, Patrick Carmichael, Anusree Natraj

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: March 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 COFs and their resulting three-dimensional (3D) pore structure remains challenging. Here, we use scanning transmission electron microscopy ptychography, an emerging 3D angstrom-scale imaging method, to study single-crystalline particles imine-linked COF TAPB-DMPDA. Previously assumed adopt average-eclipsed with only angstrom-level disorder, find crystals contain widespread disorder larger magnitudes, including shifts up half unit cell nanoscale inhomogeneities in tilt. visualizations show channels are distorted by this disorder. The extensive found even high-quality has profound implications for envisioned applications should motivate development design strategies control structures.

Language: Английский

Covalent organic frameworks as advanced materials for adsorption and analysis of contaminants in environmental, biological and food matrices DOI

Yanmin Liang,

Yan Qi,

Nannan Zhong

et al.

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 533, P. 216507 - 216507

Published: Feb. 21, 2025

Language: Английский

Citations

1
On Three-dimensional Electron Diffraction Data Quality for Probing Molecular Motions DOI
Weiyuan Wang, Zhehao Huang

Chemical Research in Chinese Universities, Journal Year: 2025, Volume and Issue: unknown

Published: March 8, 2025

Language: Английский

Citations

0
Application of COF Materials in Carbon Dioxide Electrocatalytic Reduction DOI Open Access
Haiping Wang, Xin Wang, Yaping Jiang

et al.

The Chemical Record, Journal Year: 2025, Volume and Issue: unknown

Published: March 24, 2025

Abstract COFs have become the most attractive frontier research area in heterogeneous catalysis. Since geometry and electronic structure of are largely determined by their microenvironment, which turn determines performance electrocatalytic processes, precise integration atoms COF building blocks to achieve pre‐designed composition, components functions is core. This paper focuses on structural design, synthesis, mechanism application CO 2 RR (types RR, evaluation indicators relationship between performance). In addition, we also explore challenges faced corresponding solution strategies. Finally, highlighting prospects regulation, hope provide inspiration for further development applications.

Language: Английский

Citations

0
3D Imaging Reveals Widespread Stacking Disorder in Single Crystal 2D Covalent Organic Frameworks DOI
Priti Kharel, Patrick Carmichael, Anusree Natraj

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: March 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 COFs and their resulting three-dimensional (3D) pore structure remains challenging. Here, we use scanning transmission electron microscopy ptychography, an emerging 3D angstrom-scale imaging method, to study single-crystalline particles imine-linked COF TAPB-DMPDA. Previously assumed adopt average-eclipsed with only angstrom-level disorder, find crystals contain widespread disorder larger magnitudes, including shifts up half unit cell nanoscale inhomogeneities in tilt. visualizations show channels are distorted by this disorder. The extensive found even high-quality has profound implications for envisioned applications should motivate development design strategies control structures.

Language: Английский

Citations

0