Control over Catenation in Pillared Paddlewheel Metal−Organic Framework Materials via Solvent-Assisted Linker Exchange

نویسندگان

  • Wojciech Bury
  • David Fairen-Jimenez
  • Marianne B. Lalonde
  • Randall Q. Snurr
  • Omar K. Farha
  • Joseph T. Hupp
چکیده

Control over catenation in a pillared paddlewheel metal−organic framework was achieved via solventassisted linker exchange. The linker exchange was demonstrated on the noncatenated structure of DO-MOF, by using 4,4′-bipyridine (L4) and 4,4′-azobis(pyridine) (L5) as linkers, leading to noncatenated materials SALEM-3 and SALEM-4. The de novo synthesized analogues of SALEM-3 and SALEM4 can only be obtained as 2-fold interpenetrated frameworks. The reaction progress of the linker exchange was monitored by NMR spectroscopy, and structure and framework catenation were characterized by powder X-ray diffraction and thermogravimetric methods.

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تاریخ انتشار 2013