253333-13-0

Basic information

• Product Name: Phenol, 4-[(1E)-4-pyridinylazo]-
• CAS NO: 253333-13-0
• Molecular Formula: C11H9N3O
• Molecular Weight: 199.212
• Mol File: 253333-13-0.mol
• Article Data: 14

Chemical Properties

• CAS DataBase Reference: Phenol, 4-[(1E)-4-pyridinylazo]-(CAS DataBase Reference)
• NIST Chemistry Reference: Phenol, 4-[(1E)-4-pyridinylazo]-(253333-13-0)
• EPA Substance Registry System: Phenol, 4-[(1E)-4-pyridinylazo]-(253333-13-0)

Safety Data

• Hazardous Substances Data: 253333-13-0(Hazardous Substances Data)

Upstream product

• 20815-53-6 4-(4-chlorophenylazo)pyridine 
• 108-95-2 phenol 
• 20815-66-1 4-(4-hydroxyphenylazo)pyridine 
• 504-24-5 4-aminopyridine 

Downstream Products

• 20815-66-1 4-(4-hydroxyphenylazo)pyridine 
• 1403494-63-2 C₁₇H₂₃N₃OSi 
• 924964-13-6 4-((4-methacryloyloxy)phenylazo)pyridine 

Relevant articles and documents

Azopyridine-functionalized benzoxazine with Zn(ClO4)2 form high-performance polybenzoxazine stabilized through metal-ligand coordination

In this study, we prepared a benzoxazine monomer (Azopy-BZ) that features azobenzene and pyridine units through the reaction of paraformaldehyde, aniline, and 4-(4-hydroxphenylazo)pyridine (Azopy-OH), which is obtained through a diazonium reaction of 4-am

A modular approach towards functional supramolecular aggregates-subtle structural differences inducing liquid crystallinity

Herein we report an efficient modular approach to supramolecular functional materials. Hierarchical self-assembly of azopyridine derivatives and hydrogen-bond donors yielded discotic assemblies. Subtle differences in the core units introduced mesomorphic

Hydrogen bonding interactions affect the hierarchical self-assembly and secondary structures of comb-like polypeptide supramolecular complexes displaying photoresponsive behavior

In this study we blended 4-(4-hexadecylphenylazo)pyridine (AzoPy-C16), synthesized through facile diazonium and monoetherification reactions, with polytyrosine (PTyr) to form comb-like polypeptide supramolecular complexes stabilized through hydrogen bonding between the pyridyl ring of each AzoPy-C16 unit and the OH groups of PTyr. The secondary structure of PTyr transformed from an α-helical to a β-sheet conformation upon the addition of AzoPy-C16, because the long alkyl chains of the AzoPy-C16 units disrupted the weak intramolecular hydrogen bonds between the CO and NH groups in the α-helical conformation, as determined using Fourier transform infrared (FTIR) and circular dichroism (CD) spectroscopy. Small-angle X-ray scattering (SAXS) and wide-angle X-ray diffraction (WAXD) suggested a hierarchical lamellae-within-lamellae structure for the PTyr/AzoPy-C16 supramolecular complex, featuring long-range-ordered lamellae arising from the antiparallel β-pleated sheet conformation of PTyr (d = 1.15 nm) within long-range-ordered lamellae arising from the alkyl groups of AzoPy-C16 units (d = 5.94 nm), oriented in a perpendicular manner. The d-spacing and long-range order of the lamellar structure formed from the alkyl groups decreased upon UV irradiation as the rod-like trans isomers of the AzoPy-C16 units transformed into V-shaped cis counterparts. This phenomenon also led to a change in the water contact angle of the supramolecular material, with the hydrophobic surface of PTyr/trans-AzoPy-C16 (94.2°) transforming to a hydrophilic surface for PTyr/cis-AzoPy-C16 (61.3°).