Polymer-Coordinated Heterogeneous Zeolitic Imidazolate Framework-8 with Exceptional Propylene/Propane Molecular Sieving Effect.

ABSTRACT: Zeolitic imidazolate framework-8 (ZIF-8) is a promising material for C₃H₆/C₃H₈ separation; however, its inherent linker flexibility compromises molecular sieving effect. To address this limitation, a novel ZIF-8, namely heterogeneous ZIF-8 (hZIF-8), is developed, consisting of nanocrystalline ZIF-8 phases with a minor amorphous polymer component introduced via in situ coordination. hZIF-8 is synthesized through a Lewis-acid-catalyzed cationic ring-opening polymerization of tetrahydrofuran (THF), generating polytetramethylene ether glycol (PTMEG) chains that competitively coordinate with zinc ions during ZIF-8 crystallization. This coordination-mediated heterogeneous structure exhibits unique characteristics distinct from conventional ZIF-8 and ot

SUBMITTER: Park S 

PROVIDER: S-EPMC12444872 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature