4194-40-5

Usage

Uses

Used in Chemical Industry:
3,3'-DIAMINO-4,4'-DIHYDROXYBIPHENYL; >97% is used as a key component in the production of dyes, pigments, and polymers for various applications. Its ability to impart color and enhance the durability and performance of materials makes it a valuable asset in this industry.
Used in Research and Development:
As a high-purity chemical, 3,3'-DIAMINO-4,4'-DIHYDROXYBIPHENYL; >97% is suitable for use in research and development settings. Its consistent and reliable chemical composition allows for accurate experimentation and innovation in various fields.
Used in Industrial Applications:
3,3'-DIAMINO-4,4'-DIHYDROXYBIPHENYL; >97% is utilized in various industrial applications where a high-purity chemical compound is required. Its versatility and ability to improve the properties of materials make it an essential component in the manufacturing process.

Upstream product

• 66041-61-0 3,3'-dinitro-[1,1'-biphenyl]-4,4’-diol 
• 92-88-6 4,4'-Dihydroxybiphenyl 

Relevant academic research and scientific papers

Synthesis and characterization of thermally rearranged (TR) polybenzoxazoles: Influence of isomeric structure on gas transport properties

Isomeric polyhydroxyimides based on 3,3′-diamino-4,4′-dihydroxybiphenyl (m-HAB) or 3,3′-dihydroxy-4,4′-diaminobiphenyl (p-HAB) with 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) were prepared via an ester-acid monomer. The polyhydroxyimides were then acetylated using acetic anhydride to change the ortho-functional groups on the polymer chains. These ortho-functional polyimides were used as precursors for thermal rearrangement (TR) to polybenzoxazoles for gas separation membranes. The permeability coefficients of TR polymers significantly improved as the ortho-functional polyimides converted to polybenzoxazoles. The influence of meta and para isomeric monomers on the gas transport properties of the resulting TR polybenzoxazoles were studied. In addition, gas permeation properties show a dependency on the size of the ortho-functionality of the polyimide precursors.

Design, synthesis, and characterization of an Fe(ii)-polymer of a redox non-innocent, heteroatomic, polydentate Schiff's base ligand: negative differential resistance and memory behaviour

In the present work, the unique negative differential resistance (NDR) and memory effect of an organic-metallic hybrid polymer based on the self-assembly of Fe(ii)-ions preceded by the synthesis of a newly designed multidentate Schiff's base ligand has been reported. The polymerization process was closely monitored in an absorbance study using a UV-vis spectrophotomer. The presence of sharp isosbestic points and saturation of absorbance at 1?:?1 ligand to metal concentration confirmed the stepwise growth of the polymer. A model monomer Fe-complex was also developed based on the model ligand, with the aim of understanding the properties of the polymer in a better way by comparative study but surprisingly both ligand and model ligand coordinate in a different fashion with the same Fe(ii)-metal ions under similar reaction conditions, though both of them have identical binding sites. It has been found that the monomer model complex is paramagnetic while the metallopolymer is diamagnetic in nature. FESEM images of thin films of the polymer revealed the presence of homogeneously distributed interparticulate mesopores which was further confirmed by surface area analysis. A long single strand of the polymer was found on the HOPG surface by AFM study. The cyclic voltammetry study indicated that both conjugated ligand and metallopolymers are electrochemically active. The bistable memory behaviour of the device fabricated on ITO has shown a negative differential resistance effect along with good RAM and ROM behaviour, showing the potential of this novel polymer as memristor.

BIS-BENZIMIDAZOLE COMPOUNDS AND METHODS OF USING SAME

Provided herein are compounds and methods for modulating abnormal repeat expansions of gene sequences. More particularly, provided are inhibitors of RNA and the uses of such inhibitors in regulating nucleotide repeat expansions, e.g., to treat Myotonic Dystrophy Type 1 (DM1 ), Myotonic Dystrophy Type 2 (DM2), Fuchs dystrophy, Huntington Disease, Amyotrophic Lateral Sclerosis, or Frontotemporal Dementia.

The π-π interactions enhanced in salicylaldimines and salicylaldazines

Four new series of salicylaldazines 1 and salicylaldimines 2-4 were prepared, characterized and their mesomorphic properties were studied. The structures of all compounds were identified and confirmed by spectroscopic techniques such as 1H, 13C NMR, MS and elemental analysis. Three single crystallographic structures of compounds 1a (n=3, 6) and 2 (n=3) were determined by X-ray analysis in order to correlate the molecular structures with the formation of mesophases. Crystallographic data indicated that the better mesomorphic properties might be controlled by CH-π, π-π or/and H-bonds in such system. Except for crystalline compounds 4, all other compounds 1-3 showed mesomorphic behavior of nematic, smectic A or/and smectic C phases, which were characterized by differential scanning calorimetry, optical polarizing microscope and X-ray diffraction experiments. All compounds 1-4 showed yellow-green photoluminescence in THF occurred at 519-521 nm.

Synthesis and characterization of linear and macrocyclic ligands with multiple hemisalen pockets

Procedures for the convenient preparation of new ligands possessing multiple metal binding sites are presented. Among those, a Schiff base macrocycle exhibiting three outward hemisalen pockets was synthesized using a one-pot reduction/condensation reactio