Category: nitriles-buliding-blocksOn November 30, 2012 ,《Isothermal high-pressure studies of 4-cyano-3-fluorophenyl 4-butylbenzoate dynamics near room temperature》 appeared in Physical Review E: Statistical, Nonlinear, and Soft Matter Physics. The author of the article were Rozwadowski, Tomasz; Massalska-Arodz, Maria; Wojnarowska, Zaneta; Paluch, Marian; Juszynska, Ewa; Krawczyk, Jan. The article conveys some information:
For 4-cyano-3-fluorophenyl 4-butylbenzoate, a glass former giving glass of nematic phase at ambient pressure and after rapid pressurizing, isothermal studies of complex dielec. permittivity vs. pressure were performed near room temperature In the previous isobaric experiment, on cooling the nematic phase two super-Arrhenius α relaxations, ascribed to the reorientations of mols. around short axes (main process) and precession of long mol. axes, and β relaxation related to intramol. motions were found. In the present isothermal experiments nematic-smectic phase transition was induced by increasing pressure. Linear pressure dependence of the logarithm of the dielec. relaxation time gives activation volume of ∼70 cm3/mol for liquid crystalline phases and 50 cm3/mol for the isotropic phase. The time-temperature-pressure superposition principle for the α-relaxation process is valid (i.e., a single master curve can be obtained by superpositioning dielec. loss curves measured at various temperatures and pressures). In addition to this study using 4-Cyano-3-fluorophenyl 4-butylbenzoate, there are many other studies that have used 4-Cyano-3-fluorophenyl 4-butylbenzoate(cas: 86776-52-5Category: nitriles-buliding-blocks) was used in this study.
4-Cyano-3-fluorophenyl 4-butylbenzoate(cas: 86776-52-5) is a member of aromaticfluorinated building blocks. Depending on which substituents are present, fluoroaromatic intermediates can be converted into fluorinated or fluorine-free commercial end products.Fluorine-containing aromatics have been incorporated into drugs (hypnotics, tranquilizers, antiinflammatory agents, analgesics, antibacterials).Category: nitriles-buliding-blocks
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts