Electrochemically supported and rational synthesis of 1D, 2D and 3D organic-inorganic hybrid, redox active tetracyanoquinodimethane (TCNQ) and tetrathiofulvalene (TTF) based materials in their fully reduced or oxidised forms will be undertaken. Crystal engineering of polycyano derivatives allows infinite scaffolding-like structures to possess voids and channels and hence host-guest interactions needed to facilitate unprecedented levels of tuneability, redox functionality, conductivity, electrochemical interconvertibility and morphology. The new fully reduced or oxidised materials will be rare, but are predicted to be more crystallisable and accessible than the partially reduced forms but also have technologically important properties.