Reversible modulation of interlayer stacking in 2D copper-organic frameworks for tailoring porosity and photocatalytic activity

Abstract The properties of two-dimensional covalent organic frameworks (2D COFs), including porosity, catalytic activity as well as electronic and optical properties, are greatly affected by their interlayer stacking structures. However, the precise control of their interlayer stacking mode, especially in a reversible fashion, is a long-standing and challenging pursuit. Herein, we prepare three 2D copper-organic frameworks, namely JNM-n ( n = 7, 8, and 9). Interestingly, the reversible interlayer sliding between eclipsed AA stacking (i.e., JNM-7-AA and JNM-8-AA) and staggered ABC stacking (i.e., JNM-7-ABC and JNM-8-ABC) can be achieved through environmental stimulation, which endows reversible encapsulation…

• NN
  National Natural Science Foundation of China

  Awards: 22150004, 22371091, 21731002, 21975104, 2019B030302009
• SA
  Science and Technology Commission of Shanghai Municipality

  Award: 21DZ1206900
• BA
  Basic and Applied Basic Research Foundation of Guangdong Province

  Awards: 202201020038, 2019B030302009, 2019B151502024