Materials Chemistry

Biography

Biography: Claudio Pettinari

Abstract

Coordination polymers (CPs) [1] has recorded a massive expansion in the past two decades, due to the promising functionalities they may possess, ranging from magnetism [2], to catalytic activity [3], as well as, when permanent porosity is present, gas storage [4] or separation [4]. The huge importance of these materials is manifested by the great interest they have raised even at the industrial level [5]. Due to the possibility of tuning the stereochemistry at the metal ions, by changing hapticity, size, shape and functionality of the ligands/spacers, and influencing the metal centre through steric and electronic effects, CPs can exhibit important advantages, with respect to inorganic polymeric materials, mainly in terms of versatility of the possible architectural topologies that can be constructed. Taking into account that azolates are polytopic synthons suitable to generate CPs frameworks, in the recent years we studied the interaction of several metal ions with dinitrogen ligands obtaining different compounds depending on the reaction conditions and counter-ion choice. Here we want present an overview on poly(pyrazole)- and poly(pyrazolate)-based CPs, built up with selected transition metals – namely copper, zinc, cobalt, cadmium, nickel, silver and iron - that have been prepared and characterized in the last period. The description of the complexes will be complemented by information on their thermal behaviour, main structural aspects and, whenever investigated, their functional properties.