Dielectric properties of the system: 4-n-pentyloxybenzoic acid– N-(4-n-butyloxybenzylidene)-4᾽-methylaniline

Objectives . Our aim was to study the dielectric properties of 4-n-pentyloxybenzoic acid– N-(4-n-butyloxybenzylidene)-4’-methylaniline system and reveal how different concentrations additives affect acid. Methods System were investigated using polarization thermomicroscopy dielcometry. Results We found that anisotropy changes its sign from positive negative at transition temperature high-temperature nematic subphase low-temperature one. The constant N-4-n-butoxybenzylidene-4’-methylaniline has a value increases as approaches crystalline phase. crystal structure acid contains dimers formed by two independent molecules due pair hydrogen bonds. N-(4-n-butoxybenzylidene)-4’-methylaniline associates orientational interactions molecules. 4-n-Pentyloxybenzoic (270 nm) N-4-n-butoxybenzylidene-4’- methylaniline (250 proved have approximately identical length. Considering close length values structural units both compounds sign, we assume are incorporated into supramolecular specific electrical conductivity under lies between 10−7 10−12 S∙cm−1. relationship composition in phase reduced temperature, obtained 100 1000 Hz is symbatic. However, lower compared those Hz. At 30 60 mol %, higher than individual component. Conclusions A change during transitions established. showed highest when components an equal number moles. Highest observed concentration N-4-n-butoxybenzylidene-4᾽-methylaniline %.