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Porous Interpenetrated Zirconium–Organic Frameworks (PIZOFs): A Chemically Versatile Family of Metal–Organic Frameworks
Author(s) -
Schaate Andreas,
Roy Pascal,
Preuße Thomas,
Lohmeier Sven Jare,
Godt Adelheid,
Behrens Peter
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201101015
Subject(s) - zirconium , metal organic framework , alkyl , materials science , thermal stability , sorption , porosity , thermogravimetry , powder diffraction , alkyne , furan , polymer chemistry , crystallography , chemistry , inorganic chemistry , organic chemistry , adsorption , catalysis , composite material , metallurgy
We present the synthesis and characterization of porous interpenetrated zirconium–organic frameworks (PIZOFs), a new family of metal–organic frameworks obtained from ZrCl 4 and the rodlike dicarboxylic acids HO 2 C[PE‐P(R 1 ,R 2 )‐EP]CO 2 H that consist of alternating phenylene (P) and ethynylene (E) units. The substituents R 1 ,R 2 were broadly varied (alkyl, Oalkyl, oligo(ethylene glycol)), including postsynthetically addressable substituents (amino, alkyne, furan). The PIZOF structure is highly tolerant towards the variation of R 1 and R 2 . This together with the modular synthesis of the diacids offers a facile tuning of the chemical environment within the pores. The PIZOF structure was solved from single‐crystal X‐ray diffraction analysis. The PIZOFs are stable under ambient conditions. PIZOF‐2, the PIZOF prepared from HO 2 C[PE‐P(OMe,OMe)‐EP]CO 2 H, served as a prototype to determine thermal stability and porosity. It is stable up to 325 °C in air as determined by using thermogravimetry and powder X‐ray diffraction. Argon sorption isotherms on PIZOF‐2 revealed a Brunauer–Emmett–Teller (BET) surface area of 1250 m 2 g −1 and a total pore volume of 0.68 cm 3 g −1 .