31458-17-0

Usage

Uses

Used in Organic Synthesis:
4,4'-Dibromo-2,2'-dimethylbiphenyl is utilized as a key intermediate in organic synthesis processes, serving as a building block for the creation of more complex organic molecules.
Used in Pharmaceutical Production:
In the pharmaceutical industry, 4,4'-Dibromo-2,2'-dimethylbiphenyl is used as a precursor for the synthesis of various medicinal compounds, contributing to the development of new drugs.
Used in Agrochemicals:
4,4'-Dibromo-2,2'-dimethylbiphenyl is employed as a starting material in the production of agrochemicals, such as pesticides and herbicides, to enhance crop protection and yield.
Used in Liquid Crystal Material Production:
4,4'-Dibromo-2,2'-dimethylbiphenyl is used as a precursor in the synthesis of liquid crystal materials, which are vital for the manufacturing of liquid crystal displays (LCDs) and other optoelectronic devices.
Used in Organic Light-Emitting Diode (OLED) Development:
4,4'-Dibromo-2,2'-dimethylbiphenyl is studied for its potential role in the development of OLEDs, which are used in the creation of energy-efficient and high-quality display and lighting technologies.
Used as a Flame Retardant in Polymers:
In the polymer industry, 4,4'-Dibromo-2,2'-dimethylbiphenyl is considered for its flame retardant properties, improving the fire safety of various polymer-based materials.

Upstream product

• 106-38-7 para-bromotoluene 
• 636-21-5 o-toluidine hydrochloride 
• 142068-86-8 4,4'-dibromo-2,2'-bis(bromomethyl)-1,1'-biphenyl 
• 54389-67-2 4,4‘-dibromo-2,2‘-bis(carboxyl)-1,1‘-biphenyl 
• 5794-88-7 5-Bromo-2-aminobenzoic acid 
• 84-67-3 2,2'-dimethylbenzidine 
• 621-26-1 3,3'-dimethylhydrazobenzene 
• 99-08-1 1-methyl-3-nitrobenzene 
• 81747-32-2 4,4'-dibromo-2,2'-bis(methoxycarbonyl)-1,1'-biphenyl 
• 100542-55-0 4,4‘-dibromo-2,2‘-bis(hydroxymethyl)-1,1‘-biphenyl 

Downstream Products

• 61794-66-9 C₇₂H₅₄O₂ 
• 142068-89-1 4,4'-bis(3,3',4,4'-tetramethyl-2,2'-dipyrrylmethyl)-2,2'-dimethyl-1,1'-biphenyl 
• 142068-88-0 4,4'-bis(3,3',4,4'-tetramethyl-5,5'-dicarboxy-2,2'-dipyrrylmethyl)-2,2'-dimethyl-1,1'-biphenyl 
• 142068-87-9 4,4'-bis<3,3',4,4'-tetramethyl-5,5'-bis(ethoxycarbonyl)-2,2'-dipyrrylmethyl>-2,2'-dimethyl-1,1'-biphenyl 
• 1221066-39-2 C₄₀H₃₂N₂ 
• 117490-51-4 2,2'-dimethylbiphenyl-4,4'-dicarbonitrile 

Relevant academic research and scientific papers

Structurally and electronically modulated spin interaction of transient biradicals in two photon-gated stepwise photochromism

The development of two-photon induced photochromic compounds is important for advanced photoresponsive materials. The utilization of the long-lived transient states or species for two-photon absorption is one of the efficient strategies to realize the advanced photochemical behavior beyond a one-photon photochemical reaction. We have synthesized bi-photochromic compounds composed of two photochromic phenoxyl-imidazolyl radical complex units. The biphotochromic compounds generate two biradical units when the two photochromic units absorb photons with a stepwise manner. The interaction between the two biradicals through the central bridging phenyl ring is the key feature to control the stepwise photochromic reaction. Here, we introduced aromatic spacers in order to modulate the distance and the dihedral angle between the biradical units. The color and the rate of the thermal back reaction of the stepwise photochromism can be regulated by the control of the central bridging part. These results give important insights to develop desirable advanced photoresponsive compounds.

Electron transfer in bis-porphyrin donor-acceptor compounds with polyphenylene spacers shows a weak distance dependence

A series of phenylene-bridged bis-porphyrin adducts have been synthesized, containing one, two, or three phenyl bridges. Complete synthetic details are provided. For studies of photochemical electron transfer, mixed metals wre incorporated, with zinc in one porphyrin macrocycle and FeIII (bis-imidazole) in the other macrocycle. When photoexcited, an electron is transferred from Zn to FeIII. The rate of this process drops only slowly with distance: kα exp(βr), with β = 0.4 A?-1. This dependence can be predicted by a simple theory which assumes that the drop does not reflect increased distance, but rather reflects the break in conjugation which occurs at each phenyl juncture due to the biphenyl twist angle of ca. 50°. Inefficient overlap in this angle results in a rate drop of ca. 6-fold per phenyl ring, in good agreement with the observed results.