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A Novel Zr‐Based Porous Coordination Polymer Containing Azobenzenedicarboxylate as a Linker
Author(s) -
Schaate Andreas,
Dühnen Simon,
Platz Georg,
Lilienthal Sebastian,
Schneider Andreas M.,
Behrens Peter
Publication year - 2012
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201101151
Subject(s) - sbus , chemistry , thermogravimetric analysis , sorption , porosity , scanning electron microscope , polymer , molecule , extraction (chemistry) , coordination polymer , powder diffraction , crystallography , linker , metal organic framework , chemical engineering , crystal structure , organic chemistry , materials science , composite material , adsorption , computer science , engineering , operating system
A novel porous coordination polymer (PCP), Zr–abdc, composed of Zr‐based secondary building units (SBUs), [Zr 6 O 4 (OH) 4 ] 12+ , and 4,4′‐azobenzenedicarboxylate (abdc 2– ) linkers, has been synthesized by a modulated synthetic approach. In accord with the twelve‐fold connecting SBU, Zr–abdc has a topology similar to the PCP series UiO‐66–UiO‐68, which is proposed from single‐crystal XRD and powder (P)XRD experiments. The linkers are strongly disordered, which made it impossible to determine the exact structure. The compound was further characterized by thermogravimetric analysis, scanning electron microscopy and Ar sorption measurements. Soxhlet extraction with ethanol instead of simple washing was helpful to remove guest molecules present in the pores after the synthesis. PXRD patterns measured at elevated temperatures show that a material stable up to 400 °C in air was obtained. After activation, it showed a specific surface area of 3000 m 2 g –1 and a pore volume of 1.41 cm 3 g –1 .