Polyfunctionalized tetrathiafulvalenes for advanced materials

Abstract
Four topics developed in our group are presented. They deal with i) 1,4-dithiafulven-6-yl subtituted TTFs or analogs of TTF behaving as space extended, S-rich and hypervalent strong -donors, ii) fullerene C ₆₀-TTF assemblies prone to undergo intramolecular electron transfers, iii) O, S and N crown ether-TTF assemblies, behaving as redox switchable metal cation complexing agents, and iv) dendrimeric molecules end-capped with 12 TTF groups, able to develop intra and interdendrimeric electron and charge transfer in their mixed valence state. Hence, the synthesis, electrochemistry, spectroscopy and physical or chemical properties of these systems will be presented. Key words. Tetrathiafulvalene (TTF), bis and tetrakis(1,4-dithiafulven-6-yl) substituted TTFs, crown ether TTF assemblies, C ₆₀ fullerene TTF assemblies, TTF dendrimers, charge transfer salts, electron trasfer, organic metals.