Université de Neuchâtel

Bent Tridentate Receptors in Calamitic Mesophases with Predetermined Photophysical Properties: New Luminescent Lanthanide-Containing Materials

Nozary, Homayoun ; Piguet, Claude ; Tissot, Paul ; Bernardinelli, Gérald ; Bünzli, Jean-Claude G. ; Deschenaux, Robert ; Guillon, Daniel

In: Journal of the American Chemical Society (JACS), 1998, vol. 120, no. 47, p. 12274–12288

A new synthetic strategy has been developed to introduce bent and rigid tridentate 2,6-bis(benzimidazol-2‘-yl)pyridine cores into rodlike ligands L11-17. The crystal structure of the nonmesogenic ligand L13 (C39H37N5O4, triclinic, P1̄, Z = 2) shows the expected trans−trans conformation of the tridentate...

Université de Neuchâtel

Aromatic Bent-Core Liquid Crystals: an Opportunity for Introducing Terdentate Binding Units into Mesophases

Nozary, Homayoun ; Piguet, Claude ; Rivera, Jean-Pierre ; Tissot, Paul ; Morgantini, Pierre-Yves ; Weber, Jacques ; Bernardinelli, Gérald ; Bünzli, Jean-Claude G. ; Deschenaux, Robert ; Donnio, Bertrand ; Guillon, Daniel

In: Chemistry of Materials, 2012, vol. 14, no. 3, p. 1075–1090

Lipophilic linear semirigid side arms containing two or three successive phenyl rings separated by carboxylate spacers have been connected to the 5 or 6 positions of bent aromatic terdentate 2,6-bis(benzimidazol-2-yl)pyridine binding units to give extended V-shaped (L11) and I-shaped receptors (L12, L12b, and L13). The carboxylate spacers limit the flexibility of the...