Coordination modulated on-off switching of flexibility in a metal–organic framework
Jorge Albalad, Ricardo A. Peralta, Michael T. Huxley, Steven Tsoukatos, Zhaolin Shi, Yue‐Biao Zhang, Jack D. Evans, Christopher J. Sumby, Christian J. Doonan
Abstract
·[CuCl], that shows temperature dependent switching from a rigid to flexible phase. This conversion is associated with a dramatic reversible change in the gas adsorption properties, from Type-I to S-shaped isotherms. The structural transition is facilitated by a novel mechanism that involves both a change in coordination number (3 to 2) and geometry (trigonal planar to linear) of the post-synthetically added Cu(i) ion. This process serves to 'unlock' the framework rigidity imposed by metal chelation of the bis-pyrazolyl groups and realises the intrinsic flexibility of the organic link.
Topics & Concepts
Flexibility (engineering)Metal-organic frameworkMetalAdsorptionMaterials scienceCoordination complexMetal ions in aqueous solutionNanotechnologyChemical physicsChemistryOrganic chemistryMetallurgyMathematicsStatisticsMetal-Organic Frameworks: Synthesis and ApplicationsLanthanide and Transition Metal ComplexesMagnetism in coordination complexes