Controllable Interfacial Growth of 2D Covalent Organic Framework Films for Organic Electronic Applications.

Two-dimensional covalent organic frameworks (2D COFs) are crystalline porous materials with predesignable topologies, periodic structures, and tunable functionalities constructed from molecular building blocks through covalent bonds. Their modular design allows for the integration of various functionalities, making 2D COFs highly suitable for optoelectronic applications. 2D COF films have emerged to integrate 2D COFs into optoelectronic devices, avoiding the low dispersibility and poor processability of powder COF materials.

Rational Fabrication of Ionic Covalent Organic Frameworks for Chemical Analysis Applications.

The rapid development of advanced material science boosts novel chemical analytical technologies for effective pretreatment and sensitive sensing applications in the fields of environmental monitoring, food security, biomedicines, and human health. Ionic covalent organic frameworks (iCOFs) emerge as a class of covalent organic frameworks (COFs) with electrically charged frames or pores as well as predesigned molecular and topological structures, large specific surface area, high crystallinity, and good stability. Benefiting from the pore size interception effect, electrostatic interaction, ion exchange, and recognizing group load, iCOFs exhibit the promising ability to extract specific analytes and enrich trace substances from samples for accurate analysis.