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Bent-rod liquid crystal dimers: Synthesis and mesomorphic properties

AutorSebastián, Nerea; Gimeno, Nélida; Vergara, Jorge; López, David O.; Serrano, José Luis; Folcia, César L.; Fuente, M. Rosario de la; Ros, M. Blanca
Fecha de publicación2014
EditorRoyal Society of Chemistry (Great Britain)
CitaciónJournal of Materials Chemistry C 2(20): 4027-4036 (2014)
ResumenThe synthesis and characterization of three bent-rod dimers are reported. Very long flexible spacers that include methylene units and either a phenyl ring or a triazole moiety as connecting structures join the bent- and rod-promesogenic cores. Polarizing microscopy, modulated differential scanning calorimetry, X-ray diffraction at variable temperature and dielectric measurements have been performed to establish the mesophase behaviour of the dimers. The results show a complex supramolecular organization for this kind of flexible dimer in the mesophase. Interestingly, the length and the chemical nature of the flexible linking spacers condition the liquid crystalline properties of these novel compounds. Additionally, it has been found that the chemical structure of the rod-like core plays a key role in determining the kind of mesophase, either nematic or lamellar, formed by these materials. © 2014 the Partner Organisations.
URIhttp://hdl.handle.net/10261/118035
DOI10.1039/C4TC00212A
Identificadoresdoi: 10.1039/C4TC00212A
issn: 2050-7526
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