Defect Induced Structural Transition and Lipase Immobilization in Mesoporous Aluminum Metal‐Organic Frameworks

Abstract

The disorder to order and structural transformation are unique metal‐organic framework (MOF) characters. How to adapt or control both behaviors in MOF is rarely studied. In this case, we demonstrate that our successful synthesis of [Al(OH)(PDA)]n (AlPDA‐53‐DEF, AlPDA‐53‐H, and AlPDA‐68) with H2PDA = 4,4'‐[1,4‐phenylenebis(ethyne‐2,1‐diyl)]‐di benzoic acid has illuminated the intricate world of Aluminum Metal‐Organic Frameworks (Al‐MOFs), offering profound insights into defect structures to order and transformations. AlPDA‐53‐DEF, in particular, revealed a fascinating interplay of various pore sizes within both micro and mesoporous regions, unveiling a unique lattice rearrangement phenomenon upon solvent desorption. Defects and disorders emerged as key orchestrators of transforming AlPDA‐53‐DEF, with its initially imperfect crystallinity, into the highly crystalline, hierarchically porous AlPDA‐53‐H.