Towards the room-temperature synthesis of covalent organic frameworks: a mini-review

Abstract

Covalent organic frameworks (COFs) are porous and crystalline materials which are formed based on the covalent interactions between the building monomers. These materials possess fascinating properties in terms of predesignable structure, controllable morphology, and manageable functionality which distinguished them from other polymers. COFs have also high chemical and physical stability, high surface area, and high adsorption capacity that these attributes make them excellent candidates for use in different fields. However, there are several approaches for the synthesis of COFs among which room-temperature synthesis approach is a green, versatile, and popular method which is due to its exceptional properties including simplicity, easy operation, and cost-effectiveness. In this regard, this review article presents a comprehensive view of the synthesis of COFs at room temperature as well as their applications, their limitations, and also their future perspectives.

Steering CO 2 hydrogenation toward C–C coupling to hydrocarbons using porous organic polymer/metal interfaces

“…2 D ), thus demonstrating the polymer’s stability even in the presence of Ru/TiO 2 . The polymer started to degrade above 400 °C ( 23 ). Temperature-programmed reduction experiments of p-IPOP/Ru/TiO 2 further demonstrated the excellent stability of the sample up to 350 °C under conditions more relevant for catalytic hydrogenation ( SI Appendix , Fig.…”

Linker Engineering of 2D Imine Covalent Organic Frameworks for the Heterogeneous Palladium-Catalyzed Suzuki Coupling Reaction

“…Synthesis and purification of imine COFs have become easier to do under ambient conditions. 23 Hence, we chose COF as a perfect platform to study the effects of linker engineering. In this study, we report three isoreticular 2D imine COFs, namely TTA−DFB COF, TTA−TBD COF, and TTA−DFP COF, 24 which have a common tri-topic linker and a carefully selected second di-topic linker providing functional variation.…”

Rational Design and Application of Covalent Organic Frameworks for Solar Fuel Production

“…The first report on the synthesis of COFs by the condensation of boronic acid to form a boroxine-based framework was reported by Yaghi et al in 2005 [ 4 ]. Since then, COFs have received significant attention and the rapid development in the design of crystalline porous materials has recently become an attractive field of research [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 ]. Figure 1 illustrates the timeline and several approaches for the synthesis of COF materials [ 14 ].…”

“…Figure 1 illustrates the timeline and several approaches for the synthesis of COF materials [ 14 ]. They can be constructed by using various building blocks to form two- or three-dimensional frameworks with structural tunability, following the reticular chemistry principle [ 10 , 12 , 13 , 15 , 16 ]. The two-dimensional (2D) COFs are formed by the stacking of atomic layers into overlapping layers through π–π interactions and extending these networks into three-dimensional arrangements results in 3D COFs [ 17 ].…”