A family of tetrathiafulvalene (TTF)-pyrene conjugates prone to gel various organic solvents was synthesized. Through a modular approach, the role of different chemical functions in the gelation process was assessed by varying systematically the alkyl chain length, the nature of the TTF-pyrene linkage, and the number of pyrene units. Moreover, one of these systems was thoroughly studied by NMR, UV/vis absorption, and fluorescence spectroscopy as well as by cyclic voltammetry, which showed their high potential in the context of molecular logics.