135446-54-7

Upstream product

• 26311-45-5 4-pentylbenzoic acid 
• 99-96-7 4-hydroxy-benzoic acid 
• 94-18-8 Benzyl 4-hydroxybenzoate 
• 123-08-0 4-hydroxy-benzaldehyde 

Downstream Products

• 1291073-93-2 C₄₅H₄₁NO₈ 
• 129839-56-1 C₅₀H₆₂N₂O₁₀ 

Relevant academic research and scientific papers

Nematic phases of bent-core mesogens

Bent-core mesogens derived from 4-cyanoresorcinol with terminal alkyl chains have been synthesized and investigated by polarizing microscopy, XRD and electro-optical methods. Short chain compounds have exclusively nematic phases which can be cooled to ambient temperature. These nematic phases are similar to ordinary nematic phases with only nearest neighbour correlation (N) whereas long chain compounds form SmC-type cybotactic clusters and these cybotactic nematic phases (NcybC) can be regarded as strongly fragmented SmC phases. The chain length dependent as well as temperature dependent structural transition from N to NcybC is continuous and associated with a change of the position and intensity of the small angle scattering in the XRD patterns. Moreover, a temperature dependent stepwise transition from cybotactic nematic phases to different types of non-polar and tilted smectic phases (SmC (I) and SmC(II)) is observed with a mesophase composed of elongated, but not yet fused cybotactic clusters (CybC) as an intermediate state of this transition. This improves the understanding of the nature and special properties of the nematic phases formed by bent-core molecules as well as their transition to smectic phases and it paves the way to new materials with spontaneous or field-induced biaxial nematic phases at ambient temperatures.

Synthesis of fluorosubstituted three ring esters and their dielectric properties

Laterally substituted by fluorine atoms 4-cyanophenyl 4-(4- pentylbenzoyloxy)-benzoates have been prepared and their phase transition temperatures, enthalpies and dielectric properties upon frequency were evaluated. The novel compounds exhibit a broad range of nematic mesophase, large positive dielectric anisotropy changing sign at low frequency. They are convenient components of LC mixtures for dual frequency addressing devices. Copyright Taylor & Francis Group, LLC.

Nematic Liquid Crystal Containing Diaza-18-Crown Ether Unit

Three diaza-18-crown-6 carrying aryl ester structural unit were synthesized and shown to nematic liquid crystalline properties.The influence of the molecular structure on liquid crystalline properties was studied.It has been found that whether the complexes display liquid crystalline properties depends upon structure of anions.The influence of doping inorganic salt on the clear point was also studied.