Guest shape-responsive fitting of porous coordination polymer with shrinkable framework

Ryotaro Matsuda, Ryo Kitaura, Susumu Kitagawa, Yoshiki Kubota, Tatsuo C. Kobayashi, Satoshi Horike, Masaki Takata

Research output: Contribution to journalArticle

273 Citations (Scopus)

Abstract

In situ synchrotron X-ray powder diffraction patterns of porous coordination polymers {[Cu2-(pzdc)2(bpy)]·G} have been measured (pzdc = pyrazine-2,3-dicarboxylate, bpy = 4,4′-bipyridine) (where G = H2O for CPL-2 ⊃ H2O, G = benzene for CPL-2 ⊃ benzene, and G = void for the apohost). The structures of apohost and CPL-2 ⊃ benzene were determined from Rietveld analysis. Adsorption of benzene in the channels induced a remarkable contraction in the crystal (b axis; 6.8%, volume; 4.9%), although the channels were occupied by the benzene molecules. This crystal transformation provides a new pore structure that is well suited for benzene molecules, and we denote it as a "shape-responsive fitting" transformation. This type of pore gives rise to a new guideline: frameworks can be composed of flexible motifs that are linked via strong bond and/or stiff motifs that are connected via weaker bonds.

Original languageEnglish
Pages (from-to)14063-14070
Number of pages8
JournalJournal of the American Chemical Society
Volume126
Issue number43
DOIs
Publication statusPublished - Nov 3 2004

    Fingerprint

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this