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Stefano Zacchini

Full Professor

Department of Industrial Chemistry "Toso Montanari"

Academic discipline: CHIM/03 General and Inorganic Chemistry

Director of Second Cycle Degree in Industrial Chemistry


Keywords: Metal Carbonyl Clusters Molcular nanoclusters Molecular nanocapacitors Conductor molecular nanowires Metal nanoparticles Single Crystal X-Ray Diffraction Homogeneous Catalysis Organometallic Chemistry

Synthesis, structural and electrochemical characterisation of metal carbonyl clusters (MCC). MCC as molecular nanocapacitors. Synthesis and structural characterisation of molecular semicondutor and conductor nanowires, assembled form MCC: dtermination of their electrical and magnetic properties. Supramolecular chemistry of MCC. MCC as precursors of metal nanoparticles supported on high surface and mesoporous materials.

Ligand shell stabilized metal clusters are valid candidates to assemble functional devices for data storage and could represent the ultimate solution for miniaturization in microelectronics and nanolitography. Indeed, a spheric molecular carbonyl metal cluster potentially is a molecular capacitor, as in general is based on a globular kernel of metal atoms effectively shielded by a shell of carbonyl ligands. To be truly considered a spherical metal capacitor, the cluster should be able to reversibly accept and release electrons and the metal core should undergo a transition from an insulator to a metallic regime.
 On the other side, columnar clusters, such as [{M3(CO)6}n] 2– (M = Ni, Pt; n = 1-10), are valuable precursors for the assembly or self-assembly of continuous molecular conductor wires.
 Due to the limited thermal stability of most metal carbonyl clusters and the great solubility of their salts both in organic solvents or, even, water, the above salts can be exploited as “printable metals”. Their possible ease of self-assembly by formation of M-M, M-M' or M-S-M (S = spacer) bonds upon evaporation of the solvent candidates their solutions as an “ink” for printing 1-, 2-, 3-D arrays, in addition to 0-D patterns. Within these premises, the group is actively pursuing the following research lines:
 1) New molecular capacitors.
 2) Molecular conductor or semiconductor 1-, 2-, 3-D arrays by self-assembly.
 3) New hybrid (inorganic-organic) semiconductor and conductor salts.
 4) Nano-printing of metal wires by curing self-assembled molecular wires.
 5) Nano-patterning of inorganic matrices with tailored bimetallic nanoparticles as new heterogeneous catalysts.

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