New Multifunctional Materials for Potential Applications in Molecular Electronics and Spintronics

INGLESE

This work reports on the design, synthesis and characterization of novel redox-active molecular materials with magnetic, conductive and luminescent properties. Among suitable linkers, those based on anilates, i.e. 3,6-disubstituted-2,5-dihydroxy-p-benzoquinone, TTF and chiral alanine benzoquinones derivates have been selected. By reacting these linkers with paramagnetic d- and f- metal ions, different classes of multifunctional molecular materials have been obtained: i) dinuclear complexes, formed by an anilato bridge, two tris(pyrazolyl)-borate capping ligands and two DyIII ions. Their electrochemical and spectroscopic properties are discussed. ii) A family of 2D MOFs based on TTF tetracarboxylate linker showing remarkable conductivity at room temperature and field-induced SMMs behaviour for Dy-MOF. iii) A series of chiral CuII MOFs, involving enantiopure alanine-based benzoquinones derivatives, selected as promising candidates for chiral-induced spin selectivity (CISS) effect and chiral HPLC separation. The synthesis, structural and spectroscopic characterization of this materials and preliminary studies on the conducting and magnetic properties are discussed. iv) A series of heteroleptic CPs/MOFs, obtained via the ancillary ligand approach, by combining ClCNAn, tetrafluoroterephthalate (F4BDC) linkers and Ln(III) ions. Structural characterization and combination of time-resolved photoluminescence studies and ab initio calculations are discussed for Er-CP as well as preliminary results on magnetic properties for the MOFs.