Synthesis of –C[double bond, length as m-dash]N– linked covalent organic frameworks via the direct condensation of acetals and amines
Zhi-Jun Li,San-Yuan Ding,*Hua-Dong Xue,Wei Caoa and Wei Wang*
We demonstrate herein a facile approach for constructing –CN– linked COFs from acetals. Three new COFs (imine-linked LZU-20, hydrazone-linked LZU-21, and azine-linked LZU-22) were synthesized by the direct condensation of dimethyl acetals and amines. All the synthesized COFs are highly crystalline and exhibit good thermal stability.