title: Stabilization of the Columnar Mesophase of Perylenediimide by Racemic Triple Tails.
abstract: Whereas perylene tetracarboxdiimides derived from amino-n-alkanes if at all only show monotropic (thermodynamically unstable) mesogenic self-assembly, the hexagonal columnar liquid crystalline state can be stabilized over a broad temperature range with doubly branched, doubly racemic alkyl residues. An improved tendency to homeotropic surface orientation is observed, and the orientation of the liquid crystalline domains is maintained upon cycling through the crystalline state at room temperature.
authors.affiliation: Centre de Recherche Paul Pascal, CNRS & Université de Bordeaux, 115, av. Schweitzer, 33600, Pessac, France.
authors.forename: Deise M
authors.initials: DM
authors.lastname: Pereira de Oliveira Santos
authors.affiliation: Centre de Recherche Paul Pascal, CNRS & Université de Bordeaux, 115, av. Schweitzer, 33600, Pessac, France.|Departamento de Química, Universidade Federal da Paraíba, CEP 58051-900, João Pessoa, Paraíba, Brazil.
authors.forename: Marilia G
authors.initials: MG
authors.lastname: Belarmino Cabral
authors.affiliation: Centre de Recherche Paul Pascal, CNRS & Université de Bordeaux, 115, av. Schweitzer, 33600, Pessac, France.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Bentaleb
authors.affiliation: Departamento de Química, Universidade Federal da Paraíba, CEP 58051-900, João Pessoa, Paraíba, Brazil.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Cristiano
authors.affiliation: Departamento de Química, Universidade Federal de Santa Catarina, CEP 88040-900, Florianópolis, Santa Catarina, Brazil.
authors.forename: Hugo
authors.initials: H
authors.lastname: Gallardo
authors.affiliation: Centre de Recherche Paul Pascal, CNRS & Université de Bordeaux, 115, av. Schweitzer, 33600, Pessac, France.
authors.forename: Fabien
authors.initials: F
authors.lastname: Durola
authors.affiliation: Centre de Recherche Paul Pascal, CNRS & Université de Bordeaux, 115, av. Schweitzer, 33600, Pessac, France. bock@crpp-bordeaux.cnrs.fr.
authors.forename: Harald
authors.identifier: http://orcid.org/0000-0002-0479-8203
authors.initials: H
authors.lastname: Bock
keywords: dyes/pigments; electron-deficient compounds; liquid crystals; perylene; stacking interactions