In: Chemical Science, 2015, vol. 6, no. 6, p. 3393-3401
Twelve chiral and achiral self-assembling dendrons have been grafted onto a [60]fullerene hexa-adduct core by copper-catalyzed alkyne azide "click" cycloaddition. The structure adopted by these compounds was determined by the self-assembling peripheral dendrons. These twelve dendrons mediate the self-organisation of the dendronized [60]fullerene into a disc-shaped structure containing the...
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In: Chemical Communications, 2012, vol. 48, no. 16, p. 2183-2185
Mesomorphic alkyne-based first- and second-generation dendrons were grafted onto gold nanoparticles carrying azide groups under click reaction conditions. The nanoparticles decorated with the dendrons displayed liquid-crystalline properties and good thermal stability.
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In: Chemistry – A European Journal, 2016, vol. 22, no. 18, p. 6185-6189
New liquid-crystalline pillar[5]arene derivatives have been prepared by grafting first- generation Percec-type poly(benzylether) dendrons onto the macrocyclic scaffold. The molecules adopt a disc-shaped structure perfectly suited for self-organization into a columnar liquid-crystalline phase. In this way, the pillar[5]arene cores are piled up, thus forming a nanotubular wire encased within a...
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In: European Journal of Organic Chemistry, 2013, vol. 2013, no. 18, p. 3675-3684
Whereas the reaction of 1,4-bis(2-bromoethyloxy)benzene (4) with paraformaldehyde in the presence of BF3·Et2O afforded exclusively the cyclopentameric pillar[5]arene derivative (5), both cyclopenta- and cyclohexameric macrocycles 5 and 6 were obtained when the reaction of 4 with paraformaldehyde was performed at 45 °C in CHCl3 with FeCl3 as the...
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In: Chemical Communications, 2012, vol. 48, no. 65, p. 8072-8074
Comparison of the liquid-crystalline properties of a pillar[5]arene core functionalized with 10 mesogenic cyanobiphenyl units with those of a corresponding model compound revealed the strong influence of the macrocyclic pillar[5]arene core on the mesomorphic properties.
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In: Macromolecules, 2016, vol. 49, no. 9, p. 3222-3231
Liquid-crystalline dendrimers have been prepared from second-generation Percec- type poly(benzyl ether) dendrons or second-generation poly(aryl ester) dendrons carrying cyanobiphenyl mesogens. The Janus dendrimer, which combines the two types of dendromesogens, has also been synthesized. Those compounds have been prepared under copper-catalyzed azide–alkyne cycloaddition conditions. The ...
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Thèse de doctorat : Université de Neuchâtel, 2012 ; 2249.
Ce travail de thèse traite de la mise en place ainsi que de l’application d’une nouvelle méthodologie de synthèse basée sur la cycloaddition 1,3-dipolaire de Huisgen connue sous le nom de chimie click. Tout au long de ce travail, cette méthode sera appliquée dans la synthèse de nouveaux composés mésomorphes dont la complexité structurale augmentera au fur et à mesure des...
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In: Magnetic Resonance in Chemistry, 2011, vol. 49, no. 1, p. 16-22
In this contribution, a pulse sequence is described for recording accordion-optimized DEPT experiments. The proposed ACCORDEPT experiment detects a wide range of one-bond coupling constants using accordion optimization. As a proof of concept, this strategy has been applied to a mesogen containing a large range of one-bond 1JCH coupling constants associated with the various...
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