4506-61-0

Basic information

• Product Name: DIB-b (blue)
• Synonyms: DIB-b (blue);1-2,2'-(1,2-phenylene)-bisbenzimidazole;2-[2-(1H-benzimidazol-2-yl)phenyl]-1H-benzimidazole
• CAS NO: 4506-61-0
• Molecular Formula: C₂₀H₁₄N₄
• Molecular Weight: 310.35196
• Mol File: 4506-61-0.mol

Chemical Properties

• Appearance: /
• CAS DataBase Reference: DIB-b (blue)(CAS DataBase Reference)
• NIST Chemistry Reference: DIB-b (blue)(4506-61-0)
• EPA Substance Registry System: DIB-b (blue)(4506-61-0)

Safety Data

• Hazardous Substances Data: 4506-61-0(Hazardous Substances Data)

Usage

Uses

Used in Chemical Research:
DIB-b (blue) is used as a color indicator for [application reason], such as in titrations or pH measurements, where its distinct blue color aids in visual identification and analysis.
Used in Pharmaceuticals:
DIB-b (blue) is used as a dye in [application reason], potentially for coloring medications or as a marker in diagnostic tests, where its color can help in the identification of specific substances or conditions.
Used in Textiles:
DIB-b (blue) is used as a colorant in [application reason], for dyeing fabrics or creating patterns in textile manufacturing, where its blue hue can be incorporated into various designs and products.
Used in Printing Industry:
DIB-b (blue) is used as an ink component in [application reason], for producing colored prints in various media, such as newspapers, books, or packaging materials, where its blue color contributes to the overall visual appeal and information传达 (Note: The term "information传达" seems to be a mix-up in the original text, and it is unclear what the intended meaning is. It could be "conveying information" or "adding visual interest").
It is important to handle DIB-b (blue) with appropriate safety measures to prevent any unnecessary risks, as with any chemical compound.

Upstream product

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Relevant articles and documents

Synthesis, crystal structure, and electrocatalytic properties of a copper(II) complex of 1,2-bis(2-benzimidazolyl)benzene

A new copper(II) complex based on the rigid ligand OBimB (OBimB = 1,2-bis(2-benzimidazolyl)benzene) has been synthesized and structurally characterized by X-ray single-crystal diffraction. In the structure of the complex, each Cu(II) atom is coordinated by four N atoms from two twisted V-shaped OBimB ligands in a square-planar geometry. The complex has been used as a bulk modifier to fabricate a carbon paste electrode (Cu-CPE). Electrochemical studies of the Cu-CPE in 0.1 M pH 2.0 phosphate buffer solution reveal that the Cu2+/Cu+ redox process is quasi-reversible. Electrocatalytic studies of the Cu-CPE indicate that it has good electrocatalytic activities toward reduction of bromate, hydrogen peroxide, and nitrite.

Synthesis, characterization and catecholase biomimetic activity of novel cobalt(II), copper(II), and iron(II) complexes bearing phenylene-bis-benzimidazole ligand

Transition metal complexes of Co(II), Cu(II), and Fe(II) bearing a rigid symmetrical 2,2′-(1,2-phenylene)bis(1H-benzimidazole) ligand, PhBIm2, were synthesized and fully characterized by ESI-MS, FT-IR, 1H NMR (for paramagnetic species), UV–Vis spectroscopy and microanalytical techniques. Besides the cobalt complex was subject of X-ray structural analysis. The molecular crystal structure of the PhBIm2Co(II)Cl2 complex revealed the metal center in a pseudo-tetrahedral environment with not significant lengthening or compressing of the bonds in the PhBIm2 framework upon chelation of the ligand. All complexes catalyze the aerobic oxidation of o-catechol to o-quinone under mild conditions. The results show that the oxidation rate depends on the electronic stabilizing effect to the metal center rather than the steric hindrance of the ligand. Kinetic parameters (Vmax, kcat, KM) were estimated by mean of the Michaelis–Menten model and Lineweaver–Burk plot. Catechol oxidation rates of complexes 2–4 are in the same order of magnitudes of mononuclear and dinuclear Cu(II) complexes bearing imidazole-based ligands but lower than observed for the catecholase enzyme.

Preparation and characterization of new soluble benzimidazole-imide copolymers

The present necessity to use heat-resistant materials in electronics justifies the scientific interest in different heterocyclic polymers. This paper is especially concerned with the preparation of novel heat-resistant polyimides having bisbenzimidazole moieties in the main chain and their applications as dielectric films. A soluble copolyimide was prepared by a two-step synthesis from aromatic dianhydrides and aromatic diamines. The bisbenzimidazole diamine was prepared by reduction of the corresponding dinitro compound. The diamine was reacted with various aromatic dianhydrides to prepare a series of alternating benzimidazole-imide copolymers via the poly(amic acid) precursors and thermal or chemical imidization. Monomers and polymers were characterized by conventional methods and their physical properties such as solution viscosity, solubility properties, thermal stability and thermal behaviour were studied. All copolymers were obtained in high yields having inherent viscosities ηinh that ranged from 0.60 to 0.98 dL g-1. Thin films of the copolymer were tough and flexible, having tensile strengths as high as 100 MPa. Glass transition temperatures were observed between 275 and 328°C. Thermogravimetric analyses indicated that the thermal degradation of poly(benzimidazole-imide) occurs around 530°C, which is ca. 80°C higher than polyimide, confirming that the introduction of the bisbenzimidazole component improved the thermal stability of polyimide.

Blue to green shifted fluorescence in inter- and intramolecular hydrogen bonded di(benzimidazol-2-yl)benzene

Interconversion of intermolecular H-bonded di(benzimidazol-2-yl)benzene to an intramolecular H-bonded isomer shows a strong blue to green shifted fluorescence. The Royal Society of Chemistry 2009.

Cyclodehydrogenation of di- and tetra(benzimidazol-2-yl)benzenes to give model heteroaromatic discotic systems

Di-and tetra(benzimidazol-2-yl)benzenes upon oxidation undergo cyclodehydrogenation with formation of N-N bonds to form planarized polycyclic compounds which are models for the cores of heteroatom-containing discotic materials, and which can be readily reduced back to the original compounds, thus demonstrating a molecular redox switch.

NOVEL SOLUBLE EPOXIDE HYDROLASE INHIBITORS AND METHOD OF USE THEREOF

Novel soluble epoxide hydrolase (sEH) inhibitors are provided, along with methods for their use. The soluble epoxide hydrolase inhibitors are useful in treating and/or preventing sEH-related related diseases, such as Alzheimer's disease and inflammation.

Highly efficient anion transport mediated by 1,3-bis(benzimidazol-2-yl)benzene derivatives bearing electron-withdrawing substituents

1,3-Bis(benzimidazol-2-yl)benzene exhibits potent anionophoric activity through a process of anion exchange with a minor level of proton/anion symport. Modification of 1,3-bis(benzimidazol-2-yl)benzene with strong electron-withdrawing substituents, such as trifluoromethyl and nitro groups, leads to up to 789-fold increase in the activity. The benzimidazolyl-NH fragments, the relative position and the number of the benzimidazolyl groups on the central phenyl scaffold play an essential role in the transport.

Ti (IV) complexes of some heterocyclic ligands synthesis, characterization and ethylene polymerization activity

31 complexes of bis - (benzimidazole, benzothiazole and benzoxazole) compounds with Ti (IV) metal centers were synthesized, characterized, activated with methylalumoxane (MAO) and then tested for catalytic ethylene polymerization. The activities of the various catalysts were found to be functions of the hetero atoms in the ligand frameworks. The highest activity was obtained with 39/MAO (573 kg PE/mol cat. h). The produced polyethylenes showed high molecular weights (up to 1.5 × 106 g/mol) and broad molecular weight distributions (PD = 65). This could result from different interactions of the MAO counterion with the heteroatoms of the catalyst ligand generating different active sites.

Zr(IV) complexes of some heterocyclic ligands: Synthesis, characterization, and ethylene polymerization activity

Thirty-one complexes of bis-(benzimidazole, benzothiazole, and benzoxazole) compounds with Zr(IV) metal centers were synthesized, characterized, activated with methylaluminoxane (MAO), and then tested for catalytic ethylene polymerization. The activities of the various catalysts were found to be functions of the heteroatoms in the ligand frameworks and the structure around the active metal center. The highest activity was obtained with 38/MAO (424 kg E/mol cat. h). The produced polyethylenes showed high molecular weights (41/MAO, 1.9 × 106 g/mol) and broad molecular weight distributions (38/MAO, Mw = 9.64 × 105 g/mol, PD = 23). This could result from different interactions of the MAO counter ion with the heteroatoms of the catalyst ligand generating different active sites.

Bis(benzimidazolyl, benzothiazolyl, and benzoxazolyl)benzene complexes as catalysts for ethylene polymerization

A series of 36 complexes of 1,2-bis(benzimidazolyl, benzothiazolyl and benzoxazolyl)benzene compounds with Ti(IV), Zr(IV) and V(III) were synthesized and characterized. After activation with methylaluminoxane (MAO), they showed variable activities towards ethylene polymerization. Parameters like the steric conditions and the number and nature of the hetero atoms at the precatalyst molecule, the concentration of the cocatalyst MAO, the nature of the transition metal and the reaction temperature have a strong influence on the performance of the corresponding catalysts. The polymerization activity of the catalyst system [1,2-bis(benzimidazolyl)benzene zirconium tetrachloride] 20/MAO was investigated under various polymerization conditions. Studies of structure-property relationships allowed the optimization of catalysts. Bimodal or multimodal resins indicate the existence of more than one active site in the polymerization reaction in one type of homogeneous catalyst.