91371-12-9

Usage

Uses

Used in Organic Synthesis:
4,4'-dibromo-2,2'-dinitrobiphenyl is used as a precursor in the synthesis of various organic molecules, serving as a building block in organic chemistry. Its unique structure allows for the creation of a wide range of compounds with diverse properties.
Used in Pharmaceutical Industry:
In the pharmaceutical industry, 4,4'-dibromo-2,2'-dinitrobiphenyl is used as a key intermediate in the production of certain drugs. Its chemical properties enable the development of new pharmaceuticals with potential therapeutic benefits.
Used in Agrochemical Industry:
4,4'-dibromo-2,2'-dinitrobiphenyl is utilized in the agrochemical industry for the synthesis of various agrochemicals, such as pesticides and herbicides. Its presence in these compounds contributes to their effectiveness in controlling pests and weeds.
Used in Dye Industry:
In the dye industry, 4,4'-dibromo-2,2'-dinitrobiphenyl is employed as a starting material for the production of dyes. Its chemical structure allows for the creation of dyes with specific color properties and stability.
Used in Research and Development:
4,4'-dibromo-2,2'-dinitrobiphenyl is used in research and development as a reference standard for analytical testing. Its well-defined chemical properties make it suitable for calibrating analytical instruments and ensuring accurate measurements.
Used as a Reagent in Chemical Reactions:
In addition to its applications in various industries, 4,4'-dibromo-2,2'-dinitrobiphenyl is also used as a reagent in chemical reactions. Its ability to participate in various chemical processes makes it a valuable tool in the synthesis of new compounds and materials.
However, it is important to handle 4,4'-dibromo-2,2'-dinitrobiphenyl with care, as it is a potential irritant and may be harmful if ingested or inhaled. Proper safety measures should be taken during its use to minimize any risks associated with its handling.

Upstream product

• 3460-18-2 1,4-dibromo-2-nitrobenzene 
• 5855-71-0 2,2'-dinitrobenzidine 
• 7664-93-9 sulfuric acid 
• 92-86-4 4-(4-bromophenyl)bromobenzene 
• 2436-96-6 1-nitro-2-(2-nitrophenyl)benzene 
• 33948-36-6 2-iodocyclohex-2-en-1-one 
• 83834-10-0 3,7-dibromodibromodibenzo[b,d]thiophene 

Downstream Products

• 136630-36-9 4,4′-dibromo-[1,1′-biphenyl]-2,2′-diamine 
• 79580-35-1 3,8-dibromobenzo-[c]cinnoline 
• 1262528-41-5 C₂₀H₁₇NO₂Si 
• 1228595-79-6 3,7-dibromo-5,5-dimethyl-5H-dibenzo[b,d]silole 
• 958293-23-7 5,5-dioctyl-3,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5H-dibenzo[b,d]silole 
• 200878-47-3 2,7-dicyano-9-methylcarbazole 
• 186192-99-4 2,7-dicyanocarbazole 

Relevant academic research and scientific papers

Synthesis and properties of air-stable n-channel semiconductors based on MEH-PPV derivatives containing benzo[c]cinnoline moieties

In this study we synthesized three novel poly[2-methoxy-5-(2-ethylhexyloxy) -1,4-phenylenevinylene] (MEH-PPV) derivatives that differ in terms of their ratios of heterocyclic benzo[c]cinnoline moieties: P50 containing only MEH-PPV/benzo[c]cinnolinevinylene (BZCV) alternating segments and P25 and P10 containing both MEH-PPV/BZCV alternating segments and MEH-PPV block segments. UV-Vis and PL spectra of these polymers revealed values of λUVmax and λPLmax that ranged from 440 to 489 and from 492 to 551 nm, respectively; these wavelengths blue-shifted upon incorporating additional benzo[c]cinnoline moieties. We also observed energy transfer from the MEH-PPV/BZCV alternating segments to the MEH-PPV block segments. P50, which featured an alternating structure in its main chain, displayed a solvatochromic effect, emitting green light in non-polar solvents and yellow light in polar solvents. The HOMO and LUMO energy levels of these polymers, measured using cyclic voltammetry, ranged from -5.11 to -5.62 and from -3.08 to -3.31 eV, respectively. The incorporation of electron-withdrawing benzo[c]cinnoline moieties enhanced the electron affinity and improved the oxidative stability of the polymers. A bottom-gate, top-contact organic field-effect transistor (OFET) based on P50 exhibited n-channel behavior under ambient conditions, with an electron mobility of 7.8 × 10-3 cm2 V-1 s-1 and an on/off ratio greater than 104. No significant variation in electron mobility can be observed after this OEFT was stored under ambient conditions up to 30 days. To the best of our knowledge, this is the first time that air-stable n-channel MEH-PPV derivatives have ever been reported. It indicated that p-type MEH-PPV can be transformed into n-type materials upon incorporation of benzo[c]cinnoline moieties. This journal is the Partner Organisations 2014.

Investigations on the electrochemical properties of new conjugated polymers containing benzo[c]cinnoline and oxadiazole moieties

A four-step route was designed to synthesize 3,8-benzo[c]cinnoline dicarboxylic acid (4). New conjugated polymers, POXD (I) and POXD (T), containing benzo[c]cinnoline and oxadiazole moieties, were obtained by thermal cyclodehydration of their soluble polyhydrazide precursors PHA (I) and PHA (T), respectively. Two reduction peaks were observed for these new conjugated polymers during CV cathodic scan. From the CV voltammograms combined with the results from molecular simulation, we concluded that the first reduction occurred at oxadiazole moiety and benzo[c]cinnoline moiety was responsible for the second reduction. It indicates that oxadiazole has stronger electron affinity than benzo[c]cinnoline. We proposed a mechanism to explain this two-stage reduction process. Due to the planar and electron-accepting ability of benzo[c]cinnoline and oxadiazole moieties, POXD (I) and POXD (T) exhibited very low LUMO (-3.42 and -3.45 eV) and HOMO (-6.23 and -6.27 eV) energy levels. They can be used as hole-blocking or electron-injection layers for OLED applications.

Organic light-emitting device

An organic light-emitting device includes a first electrode and a second electrode facing the first electrode. An organic layer is disposed between the first electrode and the second electrode. The organic layer includes an emission layer, a first compound and a second compound.

Asymmetric pyrene derivatives comprising amine group including pyridinyl group and organic light-emitting diode including the same

The present invention relates to pyrene derivatives represented by the following chemical formula A or the following chemical formula B, and an organic light-emitting diode including the same, wherein substituents Py, Ar1 to Ar3, Z and m are the same as d

PYRENE DERIVATIVES AND ORGANIC ELECTRO LUMINESCENT DEVICE COMPRISING SAME

The present invention relates to a pyrene based derivative compound of an asymmetric structure and an organic electroluminescent device comprising the same. The pyrene derivative according to the present invention is characterized by being represented by chemical formula A through chemical formula B. The pyrene derivative compound according to the present invention exhibits remarkably improved blue color purity as compared to an organic electroluminescent device using an existing pyrene based aryl amine derivative compound while being able to realize full color since life characteristic and luminance characteristic are excellent, thereby being able to be used in various display devices.

Asymmetric pyrene derivatives comprising amine group including heteroaryl group and organic light-emitting diode including the same

The present invention relates to a pyrene derivative represented by [chemical formula A] or [chemical formula B], and an organic light emitting diode comprising the same, wherein substituents Py_1, Py_2, Ar_1, Ar_2, Z, and m are defined in the detailed de

Asymmetric pyrene derivatives comprising heteroaryl amine group and organic light-emitting diode including the same

The present invention relates to a pyrene derivative represented by [chemical formula A] or [chemical formula B], and an organic light emitting diode comprising the same, wherein substituents Py, Het_1 to Het_3, Z, and m are defined in the detailed description of the invention.

Asymmetric pyrene derivatives comprising aryl amine group and organic light-emitting diode including the same

The present invention relates to asymmetric pyrene derivatives represented by chemical formula A or chemical formula B and to an organic light-emitting device including the same, wherein substituents of Ar1, Ar2, Ar3, Ar4, Z and m are as defined in the detailed description of the present invention.

Asymmetric pyrene derivatives comprising amine group including pyridinyl group and organic light-emitting diode including the same

The present invention relates to a pyrene derivative represented by Chemical formula A and an organic light emitting device comprising the same. The substituents Py1, Py2, Ar1, Ar2, Z, and m are as defined in the detailed description.

Asymmetric pyrene derivatives comprising amine group including heteroaryl group and naphthyl group and organic light-emitting diode including the same

The present invention relates to a pyrene derivative represented by [chemical formula A] or [chemical formula B], and an organic light emitting diode comprising the same, wherein substituents Py_1, Py_2, Naph_1, and Naph_2, and m are as defined in the detailed description of the invention.