Université de Neuchâtel

Synthèse, caratérisation et étude de composés liquides-cristallins du fullerène : poly-adduits et bis-méthanofullerènes chiraux

Gottis, Sébastien ; Deschenaux, Robert (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2008 ; Th.2032.

Liquid crystals play a crucial role in new technologies. Indeed, in a society in which audio and video media are increasingly used by more and more people, organic liquid crystals have a bright future. On the other hand, chemicals like fullerenes, which display unique physical and chemical properties, are appealing compounds for the design of multifunctional liquid-crystalline materials. In this...

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...