Solid-state transformation in porous metal-organic frameworks based on polymorphic-pillared net structure: Generation of tubular shaped MOFs

Somboon Chaemchuen, Kui Zhou, Mekhman S. Yusubov, Pavel S. Postnikov, Nikom Klomkliang, Francis Verpoort

Research output: Contribution to journalArticle

Abstract

A first time report on a solid-state polymorphic transformation of MOF materials [Zn2(bdc)2(dabco)]n (ZnBD) and [Co2(bdc)2(dabco)]n (CoBD) from a pillared kagomé-lattice form (ZnBDkgm or CoBDkgm) to a pillared square-lattice form (ZnBDsql or CoBDsql) at ambient condition is given. Several solvents were applied as a guest-driven molecule to trigger the solid-to-solid transformation while only methanol demonstrated to be able to perform this transformation. The methanol-driven solid-state transformation behavior was observed by using powder X-ray diffraction. The morphology investigated that the rod-like Kagomé form rapidly transformed into a tubular square lattice upon addition of methanol at room temperature. The characteristic porosity reconfirmed the transformation was complete. A transformation mechanism of disconnection-deformation-rebuilding was elucidated based on the experiment.

Original languageEnglish
Pages (from-to)99-104
Number of pages6
JournalMicroporous and Mesoporous Materials
Volume278
DOIs
Publication statusPublished - 1 Apr 2019

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Keywords

  • Kagomé
  • Metal-organic frameworks
  • Pillared MOFs
  • Polymorph
  • Solid-state transformation

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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