Synthesis, crystal structure, and luminescent properties of new zinc(II) and cadmium(II) metal-organic frameworks based on flexible bis(imidazol-1-yl)alkane ligands

Marina Barsukova, Tatiana Goncharova, Denis Samsonenko, Danil Dybtsev, Andrei Potapov

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

New metal-organic frameworks (MOFs) based on zinc and cadmium ions, terephthalic acid, and flexible ligands 1,5-bis(imidazol-1-yl)pentane or 1,6-bis(imidazol-1-yl)hexane were prepared and characterized by X-ray diffraction, thermorgavimetric analysis and IR spectroscopy. The imidazolyl ligands were prepared by a new robust procedure involving the reaction between imidazole and 1,5-dibromopentane or 1,6-dibromohexane in a superbasic medium (KOH in DMSO). MOFs based on 1,5-bis(imidazol-1-yl)pentane had diamond topology (dia) and are triply interpenetrated. Ligands with longer spacer 1,6-bis(imidazol-1-yl)hexane, terephthalate ions and zinc(II) ions formed five-fold interpenetrated metal-organic framework also with dia topology, while cadmium(II) ions with the same ligands formed eight-connected uninodal net with a very rare self-penetrated topological type ilc and a point symbol 424 .5.63. The influence of the chemical composition of MOFs on their photoluminescent properties is investigated and discussed in detail.

Original languageEnglish
Article number132
JournalCrystals
Volume6
Issue number10
DOIs
Publication statusPublished - 2016

Keywords

  • Bis(imidazol-1-yl)alkanes
  • Cadmium
  • Flexible ligands
  • Imidazole
  • Luminescence
  • Metal-organic frameworks
  • Zinc

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Inorganic Chemistry

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