Université de Neuchâtel

Liquid-Crystalline [60]Fullerene-TTF Dyads

Allard, Emmanuel ; Oswald, Frédéric ; Donnio, Bertrand ; Guillon, Daniel ; Delgado, Juan Luis ; Langa, Fernando ; Deschenaux, Robert

In: Organic Letters, 2005, vol. 7, no. 3, p. 383-386

[60]Fullerene was functionalized with a TTF derivative and a bis-mesogenic fragment. The synthetic methodology was based on the addition of a malonate derivative to C60 (Bingel-type reaction). Both the malonate and dyad showed smectic B and A phases. The supramolecular organization within the smectic layers was of the monolayer type for the malonate and of the bilayer type for the...

Université de Neuchâtel

Liquid-Crystalline Mixed [5 : 1]Hexa-adducts of [60]Fullerene. Preliminary Communication

Gottis, Sébastien ; Kopp, Cyril ; Allard, Emmanuel ; Deschenaux, Robert

In: Helvetica Chimica Acta, 2007, vol. 90, no. 5, p. 957-962

A liquid-crystalline mixed [5 : 1]hexa-adduct of [60]fullerene was synthesized by addition of two different malonate derivatives onto C60. The hexa-adduct derivative 2 was prepared by a stepwise synthetic procedure (fullerene -> mono-adduct of C60 -> hexa-adduct of C60). Cyanobiphenyl and octyloxybiphenyl derivatives were selected as mesogens. The malonate derivatives...