title: Design, Synthesis, and Self-Assembly Behavior of Liquid-Crystalline Bis-[60]Fullerodendrimers.
abstract: Bis-[60]fullerodendrimers were synthesized by assembling [60]fullerene-containing type I (terminal olefin) and type II (α,β-unsaturated carbonyl olefin) olefins through the olefin cross-metathesis reaction. The synthetic modular approach developed in this study allowed the preparation of mono-[60]fullerodendrimers and their [60]fullerene-free analogues. First- and second-generation poly(aryl ester) dendrons carrying cyanobiphenyl mesogens were used as liquid-crystalline promoters. The liquid-crystalline properties were studied by polarized optical microscopy, differential scanning calorimetry, and small-angle X-ray scattering. In agreement with the nature and structure of the dendrimers, nematic, smectic, and multisegregated lamellar phases were observed. Owing to its versatility and tolerance towards many functional groups, olefin cross-metathesis proved to be a reaction of choice for the elaboration of molecular materials with complex architectures.
authors.affiliation: Institut de Chimie, Université de Neuchâtel, Avenue de Bellevaux 51, 2000, Neuchâtel, Switzerland.
authors.forename: Virginie
authors.initials: V
authors.lastname: Russo
authors.affiliation: Institut de Chimie, Université de Neuchâtel, Avenue de Bellevaux 51, 2000, Neuchâtel, Switzerland.
authors.forename: Pauline
authors.initials: P
authors.lastname: Pieper
authors.affiliation: Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504, CNRS-Université de Strasbourg, 23 rue du Lœss, BP 43, 67034, Strasbourg Cedex 2, France.
authors.forename: Benoît
authors.initials: B
authors.lastname: Heinrich
authors.affiliation: Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504, CNRS-Université de Strasbourg, 23 rue du Lœss, BP 43, 67034, Strasbourg Cedex 2, France.
authors.forename: Bertrand
authors.initials: B
authors.lastname: Donnio
authors.affiliation: Institut de Chimie, Université de Neuchâtel, Avenue de Bellevaux 51, 2000, Neuchâtel, Switzerland.
authors.forename: Robert
authors.identifier: http://orcid.org/0000-0002-1142-0022
authors.initials: R
authors.lastname: Deschenaux
keywords: dendrimers; fullerenes; liquid crystals; metathesis; self-assembly