title: Indene and pseudoazulene discotic liquid crystals: a synthetic and structural study.
abstract: Several new liquid-crystalline indene and pseudoazulene systems are reported. These molecules give rise to either columnar hexagonal mesophases and/or columnar plastic phases. The unique nature of these compounds stems from their non-classical discotic structure. Although the molecules have rigid aromatic cores, they lack terminal tails and instead the polarizable atoms (S, halogens) or polar groups (CN, CO) act as unusual soft parts. On the basis of many structurally related materials, we conclude that for this type of compound molecular stacking in the solid state is a prerequisite for the appearance of a columnar mesophase, although other intermolecular interactions within the layers are also important in establishing liquid-crystalline order. The behavior reported for these mesomorphic molecules opens up new possibilities in the search for related molecular interactions that might be useful for the construction of supramolecular architectures with particular properties.
authors: Departamento de Química, Facultad de Ciencias, Universidad de Burgos, 09001 Burgos, Spain.
authors: Sara
authors: S
authors: Basurto
authors: Susana
authors: S
authors: García
authors: Ana G
authors: AG
authors: Neo
authors: Tomás
authors: T
authors: Torroba
authors: Carlos F
authors: CF
authors: Marcos
authors: Daniel
authors: D
authors: Miguel
authors: Joaquín
authors: J
authors: Barberá
authors: M Blanca
authors: MB
authors: Ros
authors: M Rosario
authors: MR
authors: de la Fuente