4-(trans-4-Pentylcyclohexyl)benzonitrile (PCH5), liquid crystal (nematic).
Nematic liquid crystal for the application of optical electronics i.e. in liquid-crystal display (LCD)
4-(trans-4-Pentylcyclohexyl)benzonitrile (PCH5) has a structure of pentyl alkyl chain and benzonitrile groups attached to 1,4-positions of cyclohexane ring in trans-geometry, in another word, they are facing opposite directions.
4-(trans-4-Pentylcyclohexyl)benzonitrile is a rod-like liquid crystal with a nematic to isotropic phase transition at 327.6 K and a crystalline to nematic phase transition at 303 K. Nematic is one of the liquid crystal phases that molecules that have no positional order however tend to point in the same direction (along the director). The positional order of nematic liquid crystal can be cultivated by physical gelation mainly induced by the formation of intermolecular hydrogen bonds of gelling agents in solvents.
|Synonyms||PCH5, PCH-5, 5PCH, 1-(trans-4-Amylcyclohexyl)-4-cyanobenzene, 4-(4-Pentylcyclohexyl)benzonitrile|
|Classification / Family||Benzonitrile, Nematic Liquid Crystals|
|Melting Point||Tm = 30.0 °C|
MSDS Documentation4-(trans-4-Pentylcyclohexyl)benzonitrile MSDS Sheet
Literature and Reviews
Physical Gelation of Nematic Liquid Crystals with Amino Acid Derivatives Leading to the Formation of Soft Solids Responsive to Electric Field, N. Mizoshita et al., J. Photopolym. Sci. Technol., 13 (2), 307-312 (2000); DOI: 10.2494/photopolymer.13.307.
- Molecular Dynamics in the Rod-like Liquid Crystal 4-(trans-4-Pentylcyclohexyl)benzonitrile (PCH5) Probed by Muon Spin Resonance Spectroscopy, I. McKenzie et al., Phys. Procedia 30, 91–96 (2012); DOI: 10.1016/j.phpro.2012.04.047.
- Investigation of dielectric, optical and zeta potential properties of pure and zinc ferrite nanoparticles dispersed nematic liquid crystal PCH5. D. Gaur et al., Appl. Phys. A, 128, 230 (2022); DOI: 10.1007/s00339-022-05318-1.
- Optical Constants of Two Typical Liquid Crystals 5CB and PCH5 in the THz Frequency Range, R. Pant et al., J. Biol. Phys., 29, 335–338 (2003); DOI: 10.1023/A:1024485918938.
Reconfigurable multi-compartment emulsion drops formed by nematic liquid crystals and immiscible perfluorocarbon oils, X. Wang et al., Langmuir 35 (49), 16312–16323 (2019); DOI: 10.1021/acs.langmuir.9b02864.
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