42243-38-9Relevant academic research and scientific papers
MESOGENIC CHARACTERISTICS OF N-(4-ETHOXYSALICYLIDENE)-4-ALKYL- AND N-(4-ETHOXYSALICYLIDENE)-4-ALKOXYANILINES
Bolotin, B. M.,Pileeva, D. S.,Etingen, N. B.,Narkevich, Yu. S.
, p. 326 - 328 (2007/10/02)
A new series of liquid-crystalline compounds with an intramolecular hydrogen bond were synthesized by the reaction of 4-ethoxysalicylaldehyde with 4-alkyl- and 4-alkoxyanilines.Substitution of the alkyl radical in the N-phenyl ring by an alkoxyl radical with the same overall chain length leads to an increase in the phase transition temperatures.However, the general temperature range of the meso phase is not reduced here.A large number of smectic phases are observed in the alkoxy derivatives.A smectic C phase appears in addition to the smectic A phase.
PROPERTIES OF A HOMOLOGOUS SERIES OF 0-HYDROXY SUBSTITUTED ANILS AND SOME BINARY MIXTURES.
Hirata,Waxman,Teucher,Labes
, p. 343 - 348 (2007/10/05)
In an earlier report,**(**1**) an 0-hydroxy substituted analog (OHMBBA) of the room temperature nematic N-(p-methoxybenzylidene)-p-n-butylaniline (MBBA) was prepared, and intramolecular hydrogen bonding was found to stabilize the compound against cleavage of the anil linkage. To examine the properties of this class of compounds, the synthesis of several such 0-hydroxy substituted compounds was undertaken, and their liquid crystalline properties determined. Two broad temperature range binary systems were also examined consisting of OHMBBA mixed with N-(p-ethoxybenzylidene)-p-n-butylaniline (EBBA), and OHMBBA mixed with N-(p-methoxybenzylidene)-p-n-pentylaniline (MPBA) and their phase diagrams determined. The dynamic scattering behavior of one of these binaries - 50-50 OHMBBA-EBBA - was examined.
