Akademska digitalna zbirka SLovenije - logo
E-resources
Peer reviewed Open access
  • Diverse π-π stacking motifs...
    Xie, Lilia S; Alexandrov, Eugeny V; Skorupskii, Grigorii; Proserpio, Davide M; Dinc, Mircea

    Chemical science (Cambridge), 09/2019, Volume: 1, Issue: 37
    Journal Article

    We report three electrically conductive metal-organic frameworks (MOFs) based on a tetrathiafulvalene linker and La 3+ . Depending on the solvent ratios and temperatures used in their solvothermal synthesis, these MOFs crystallize with different topologies containing distinct π-π stacking sequences of the ligand. Notably, their transport properties correlate rationally with the stacking motifs: longer S S contact distances between adjacent ligands coincide with lower electrical conductivities and higher activation energies. Diffuse reflectance spectroscopic measurements reveal ligand-based intervalence charge transfer bands in each phase, implicating charge delocalization among mixed-valent tetrathiafulvalene units as the dominant mode of transport. Overall, these frameworks demonstrate how tuning the intermolecular interactions in MOFs serves as a route towards controlling their physical properties. We report three electrically conductive metal-organic frameworks (MOFs) based on a tetrathiafulvalene linker and La 3+ .