20260-22-4

Usage

Uses

Used in Heat Transfer Fluids:
1,4-Dimethyl-2,5-diphenylbenzene is used as a heat transfer fluid in high-temperature applications due to its excellent thermal stability.
Used in Liquid Crystal Display Production:
1,4-Dimethyl-2,5-diphenylbenzene is used as a component in the production of liquid crystal displays, contributing to their functionality and performance.
Used as a Fluorescent Dopant in Organic Light-Emitting Diodes:
1,4-Dimethyl-2,5-diphenylbenzene is used as a fluorescent dopant in organic light-emitting diodes, enhancing their light-emitting properties.
Used as a Precursor in Organic Synthesis:
1,4-Dimethyl-2,5-diphenylbenzene is used as a precursor in the synthesis of various organic compounds, serving as a building block for the creation of new chemical entities.
Used in Organic Electronics and Photovoltaics Research:
1,4-Dimethyl-2,5-diphenylbenzene is being researched for potential applications in the field of organic electronics and photovoltaics, where its unique properties may contribute to the development of new technologies and devices.

Upstream product

• 4516-08-9 2,5-dicyclohexyl-p-xylene 
• 108-86-1 bromobenzene 
• 1124-08-9 2,5-diiodo-p-xylene 
• 98-80-6 phenylboronic acid 
• 1124-05-6 1,4-dichloro-2,5-dimethylbenzene 
• 591-51-5 phenyllithium 
• 1074-24-4 2,5-dibromo-p-xylene 
• 24388-23-6 2-phenyl-4,4,5,5-tetramethyl-1,3,2-dioxoborole 
• 106-42-3 para-xylene 
• 100-58-3 phenylmagnesium bromide 

Downstream Products

• 115213-33-7 2′,5′-dimethyl-[1,1′:4′,1′′-terphenyl]-4,4′′-dicarboxylic acid 
• 13962-92-0 5'-carboxymethyl-[1,1':4',1'']terphenyl-2'-carboxylic acid 
• 53-70-3 dibenzo[a,h]anthracene 
• 144836-56-6 2',5'-bis(cyanomethyl)-1,1':4',1''-terphenyl 
• 144836-59-9 C₅₆H₄₆P₂⁽²⁺⁾*2Br^(1-) 
• 124118-84-9 N,N'-diphenyl-p-terphenyl-2',5'-dicarboxamide 
• 115101-93-4 1,1′:4′ ,1′′-terphenyl-2′,4,4′′,5′-tetracarboxylic acid 
• 135078-63-6 5,8,14,17-tetraphenyl-2,11-dithia<3.3>paracyclophane 
• 135078-61-4 5,8-diphenyl-2,11-dithia<3.3>paracyclophane 
• 88787-16-0 4,7-diphenyl-<2.2>paracyclophane 
• 486-52-2 6,12-dihydroindeno[1,2-b]fluorene 
• 848982-57-0 2,8-dibromo-6,12-dihydro-indeno[1,2-b]fluorene 

Relevant academic research and scientific papers

Palladium-benzimidazolium salt catalyst systems for Suzuki coupling: development of a practical and highly active palladium catalyst system for coupling of aromatic halides with arylboronic acids

Palladium-benzimidazolium salt catalyst systems have been studied for the Suzuki coupling. A different substitutent effect has been uncovered with respect to nitrogen substituents in the benzimidazolium salts from the palladium-imidazolium salt analogs. A practical and highly active palladium catalyst system, PdCl2/N,N′-dibenzylbenzimidazolium chloride 2, has been identified for the Suzuki coupling of aromatic halides with arylboronic acids. The coupling of a wide array of aromatic halides with arylboronic acids with the PdCl2-2 catalyst system gave good to excellent yields. The effective palladium loading could be as low as 0.0001 mol% and 0.01-0.1 mol% for iodide and bromide substrates, respectively. The coupling of unactivated aromatic chlorides with arylboronic acids also gave good results using Cs2CO3 as base with a 2 mol% palladium loading. The electronic factors from aromatic halides exert a significant influence on the Suzuki coupling catalyzed by the PdCl2-2 system while the electronic effect from the arylboronic counterparts is negligible. The aromatic halides with modest steric hindrance could also couple smoothly with phenylboronic acids using the PdCl2-2 catalyst system.

A poorly soluble organic electrode material for high energy density lithium primary batteries based on a multi-electron reduction

Here we report an organic cathode material with poor solubility for lithium primary batteries,i.e.indeno[3,2-b]fluorene-6,12-dione. Each carbonyl group experiences a four-electron reduction to a methylene group, resulting in a high energy density of 1392 W h kg?1, which is among the best results for organic electrode materials.

Planarity of terphenyl rings possessing: O -carborane cages: Turning on intramolecular-charge-transfer-based emission

To clarify the relationship between planarity and intramolecular charge transfer (ICT), two o-carboranyl compounds (TCB and FCB) containing different ortho-type terphenyl rings, namely, perfectly distorted or planar phenyl rings, were synthesised and fully characterised. Although the emission spectra of both compounds presented intriguing dual-emission patterns in solution at 298 or 77 K and in the film state, distorted TCB mostly showed locally excited emission, whereas planar FCB demonstrated intense emission corresponding to an ICT transition. Interestingly, the emission efficiencies and radiative decay constants of terphenyl-based o-carboranyl compounds were gradually enhanced by increasing the planarity of the terphenyl groups. These results verify the existence of a strong relationship between the planarity of appended aryl groups and ICT-based radiative decay in o-carborane-substituted compounds.

Oxidative Mechanochemistry: Direct, Room-Temperature, Solvent-Free Conversion of Palladium and Gold Metals into Soluble Salts and Coordination Complexes

Noble metals are valued, critical elements whose chemical activation or recycling is challenging, and traditionally requires high temperatures, strong acids or bases, or aggressive complexation agents. By using elementary palladium and gold, demonstrated here is the use of mechanochemistry for noble-metal activation and recycling by mild, clean, solvent-free, and room-temperature chemistry. The process leads to direct, efficient, one-pot conversion of the metals, including spent catalysts, into either simple water-soluble salts or metal–organic catalysts.

Activation-Dependent Breathing in a Flexible Metal–Organic Framework and the Effects of Repeated Sorption/Desorption Cycling

A non-interpenetrated metal–organic framework with a paddle-wheel secondary building unit has been activated by direct thermal evacuation, guest exchange with a volatile solvent, and supercritical CO2 drying. Conventional thermal activation yields a mixture of crystalline phases and some amorphous content. Exchange with a volatile solvent prior to vacuum activation produces a pure breathing phase with high sorption capacity, selectivity for CO2 over N2 and CH4, and substantial hysteresis. Supercritical drying can be used to access a guest-free open phase. Pressure-resolved differential scanning calorimetry was used to confirm and investigate a systematic loss of sorption capacity by the breathing phase as a function of successive cycles of sorption and desorption. A corresponding loss of sample integrity was not detectable by powder X-ray diffraction analysis. This may be an important factor to consider in cases where flexible MOFs are earmarked for industrial applications.

Catalytic direct cross-coupling of organolithium compounds with aryl chlorides

Palladium-catalyzed direct cross-coupling of aryl chlorides with a wide range of (hetero)aryl lithium compounds is reported. The use of Pd-PEPPSI-IPent or Pd2(dba)3/XPhos as the catalyst allows for the preparation of biaryl and heterobiaryl compounds in high yields under mild conditions (room temperature to 40 C) with short reaction times.

Immobilized palladium nanoparticles on silica-starch substrate (PNP-SSS): As a stable and efficient heterogeneous catalyst for synthesis of p-teraryls using Suzuki reaction

Immobilized palladium nanoparticles on silica-starch substrate (PNP-SSS) were found to be an efficient reusable catalyst for excellent synthesis of teraryls using Suzuki reaction. The catalytic reactivity of PNP-SSS was examined over a set of substrates, demonstrating that it is reactive toward a variety of functionalities. In this process, the PNP-SSS catalyst can be reused more than six times with almost consistent efficiency and can be recovered by simple filtration.

ELECTROLUMINESCENT COMPOUNDS WITH HIGH EFFICIENCY AND ORGANIC LIGHT-EMITTING DIODE USING THE SAME

The present invention relates to novel organic electroluminescent compounds and an organic light-emitting diode comprising the same. The organic electroluminescent compounds according to the present invention exhibit high luminous efficiency and excellent life property as a material, so that an OLED device having very good operation life can be prepared therefrom.

Synthesis and two-photon properties of a multipolar chromophore containing indenofluorenyl units

A new multipolar fluorophore derived from triphenylamine as the core with diphenylaminoindenofluorenyl moieties incorporated at the peripheral positions has been synthesized and experimentally shown to possess strong two-photon absorptivities in near-IR region and intense upconverted visible emission under the irradiation of femtosecond laser pulses.

Dispirofluorene-indenofluorene derivatives as new building blocks for blue organic electroluminescent devices and electroactive polymers

A series of new dispiro[fluorenc-9′,6.9″.12-indeno[1,2b] fluorenes] (DSF-IFs) has been synthesised. These new building blocks for blue-light-emitting devices and electroactive polymers combine indenofluorene (IF) and spirobifluorene (SBF) properties. We report here our synthetic investigations towards these new structures and their thermal, structural, photophysical and electrochemical properties. These properties have been compared to those of IF and SBF. We also report the anodic oxidation of DSF-IFs that leads to the formation of non-soluble transparent three-dimensional polymers. The structural and electrochemical behaviour of these polymers has been studied. The first application of these building blocks as new blue-light-emitting materials in organic light-emitting diodes (OLED) is also reported.