RT info:eu-repo/semantics/article
T1 Mesogenic [Rh(L)4](A) complexes form mesophases with RhI⋯RhI-containing and triphenylene-discotic segregated columns. Effect of RhI⋯RhI interactions and A− = [Au(CN)2]− on hole mobility
A1 Conejo Rodríguez, Verónica
A1 Donnio, Bertrand
A1 Heinrich, Benoît
A1 Termine, Roberto
A1 Golemme, Attilio
A1 Espinet Rubio, Pablo
K1 Intermolecular interactions
K1 Interacciones intermoleculares
K1 23 Química
AB RhI complexes [Rh(L)4](A) (A− = Cl−, BF4−, [Au(CN)2]−) with conventional arylisocyanides (p-MeC6H4(NC), LA; p-MeOC6H4(NC), LB; 3,5-(OMe)2C6H3(NC), LC) or with the alkoxy-functionalized triphenylene-arylisocyanides TPh(OC12H25)5(O(CH2)6OC6H4(NC)-p) (LD1) and TPh(OC12H25)5(O(CH2)6OC6H2Me2(NC)-p) (LD2), have been prepared and their self-assembly, aggregation, optical, redox, mesogenic and conducting properties investigated. Intermolecular π–π stacking, RhI⋯RhI, and RhI⋯AuI interactions rule the crystal packing and aggregation in solution for the complexes with LA, LB, and LC. For the RhI complexes with the alkoxy-functionalized-triphenylene isocyanides LD1 and LD2 mesogenic behaviour is induced, giving rise to multicolumnar mesophases in broad temperature ranges (ca. 70–160 °C). Detailed analysis (POM, DSC, SAXS/WAXS and GIWAXS) of the columnar mesophases has allowed us to propose precise packing models that explain the diverse supramolecular arrangements found in the nanostructured condensed phases. Columnar alignments predominantly with Rh⋯Rh interactions (or Rh⋯Au, only for LD2 in specific conditions) are observed, depending on the aligning conditions. The hole mobility in the columnar mesophases of the complexes with Rh⋯Rh interactions are ∼1 cm2 V−1 s−1, that is up to four orders of magnitude higher than those reported for columnar mesophases of organic triphenylene derivatives, and increases one order of magnitude further in the mesophases containing the [Au(CN)2]− counteranion.
PB Royal Society of Chemistry
SN 2050-7526
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/59418
UL https://uvadoc.uva.es/handle/10324/59418
LA eng
NO Journal of Materials Chemistry C, 2023, 11, 1435–1447
NO Producción Científica
DS UVaDOC
RD 24-nov-2024