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Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
Structural diversity and solvent-induced transformations of a copper-based metal-organic framework with highly
Abigail Edwards1, Landon J Elkins1, Carla Slebodnick2
1Department of Natural Sciences, The University of Virginia's College at Wise, 1 College Avenue, Wise, VA 24293, USA. tam9k@uvawise.edu.
Abstract:
A newly designed tetracarboxylic acid ligand precursor 5,5'-([9,9'-bianthracene]-10,10'-diyl)diisophthalic acid (H4BADI) has been used to prepare a series of copper-based metal-organic frameworks (MOFs) with the formula [Cu2(BADI)(S)2]·xS (denoted as 1-S, where S = solvent) and exhibiting solvent-induced structural transformations. Single-crystal-to-single-crystal transformation occurs upon exchanging 1-DMF (DMF = N,N-dimethylformamide) with DMSO (DMSO = dimethylsulfoxide). 1-DMF exhibits reversible structural transformation upon treatment with a variety of solvents; of particular interest is the reversible crystalline-to-amorphous phase transformations observed upon exchange with volatile, polar solvents. A thorough structural investigation of the three framework isomers characterized via single-crystal X-ray diffraction experiments is reported and compared to several other tetracarboxylate-based MOFs composed of dimetal secondary building units.
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