83485-07-8

Basic information

• Product Name: Benzoic acid, 4-[[4-(octadecyloxy)phenyl]azo]-
• CAS NO: 83485-07-8
• Molecular Formula: C31H46N2O3
• Molecular Weight: 494.718
• Mol File: 83485-07-8.mol

Chemical Properties

• CAS DataBase Reference: Benzoic acid, 4-[[4-(octadecyloxy)phenyl]azo]-(CAS DataBase Reference)
• NIST Chemistry Reference: Benzoic acid, 4-[[4-(octadecyloxy)phenyl]azo]-(83485-07-8)
• EPA Substance Registry System: Benzoic acid, 4-[[4-(octadecyloxy)phenyl]azo]-(83485-07-8)

Safety Data

• Hazardous Substances Data: 83485-07-8(Hazardous Substances Data)

Upstream product

• 108-95-2 phenol 
• 4418-89-7 ethyl 4-[(E)-2-(4-hydroxyphenyl)diazen-1-yl]benzoate 
• 4418-89-7 ethyl 4-[(4-hydroxyphenyl)diazenyl]benzoate 
• 94-09-7 p-aminoethylbenzoate 
• 121887-96-5 ethyl 4-((4-octadecyloxyphenyl)diazenyl)benzoate 
• 112-89-0 1-Bromooctadecane 
• 105299-45-4 4-(4-hydroxphenylazo)benzoic acid 

Relevant articles and documents

Monotropic or enantiotropic mesophases? Liquid-crystalline and solid state polymorphism 4-Chloro-1,3-phenylene bis-[4-(4-alkyloxyphenylazo)benzoates

This article presents a homologous series of bent-core molecules consisting of a 4-chlororesorcinol as a central unit and 4-[(4-alkyloxyphenyl)diazenyl] benzoic acids as wings. With the use of polarizing optical microscopy (POM), thermal analysis (TOA) and differential scanning calorimetry (DSC) the mesogenic properties were detected. Furthermore, the X-ray diffraction (XRD) measurements were also performed for selected samples. Compounds of the above mentioned series form nematic, B6, and smectic C mesophases. An interesting phenomenon in the solid phase polymorphism was observed in some cases. In our experiment one crystalline form (CrI) melts to nematic phase while the second form (CrII) melts at higher temperature directly to isotropic phase. The solid state modification determines whether a monotropic and an enantiotropic mesophase is observed.

4-cyanoresorcinol-based bent-core mesogens with azobenzene wings: Emergence of sterically stabilized polar order in liquid crystalline phases

A new series of azobenzene containing bent-core molecules incorporating 4-cyanoresorcinol as the central core unit exhibiting cybotactic nematic, rectangular, columnar, and different types of tilted smectic (SmC) phases are synthesized. The mesophase behavior and phase structures are characterized in bulk and freely suspended films using a variety of experimental techniques. Depending on the chain length and temperature a series of different mesophases is observed in these compounds, ranging from cybotactic nematic via paraelectric SmC phases, polarization randomized SmCsPR phases to ferroelectric and antiferroelectric SmC phases, associated with increasing size and correlation length of the polar domains. Spontaneous formation of chiral domains is observed in the paraelectric SmC and the SmCsPR phases and discussed in relation with superstructural chirality, bend elastic constants, and surface effects. Development of polar order in tilted smectic liquid crystalline phases (SmC) of bent-core mesogens is found to take place with increasing polar domain size in a series of distinct phases via a paraelectric and a new randomized polar SmC phase (SmCsPR) to a ferroelectric phase, which then becomes modulated and finally changes to an antiferroelectric phase.

Hockey stick liquid crystals based on a 2,5-asymmetric disubstituted [1,3,4]oxadiazole core

The article describes the liquid-crystalline properties of some 2,5-asymmetric disubstituted [1,3,4]oxadiazole derivatives containing an azo and an ester linkage obtained through esterification of 2-(4-methoxyphenyl)-5-(4- hydroxyphenyl)-[1,3,4]oxadiazole with a series of 4-(4-alkoxyphenyl)-benzoic acids containing 6-10 and 18 aliphatic carbon atoms. All reported compounds present liquid-crystalline properties, evidenced by differential scanning calorimetry (DSC) and polarizing optical microscopy (POM), with nematic and smectic C type structures, with very large range of stability of mesophases (between 130°C and 198°C on heating and 134°C and 214°C on cooling). Copyright Taylor & Francis Group, LLC.