19802-70-1

Basic information

• Product Name: Quinoxaline, 2,3-bis(4-bromophenyl)-
• CAS NO: 19802-70-1
• Molecular Formula: C20H12Br2N2
• Molecular Weight: 440.137
• Mol File: 19802-70-1.mol
• Article Data: 58

Chemical Properties

• CAS DataBase Reference: Quinoxaline, 2,3-bis(4-bromophenyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: Quinoxaline, 2,3-bis(4-bromophenyl)-(19802-70-1)
• EPA Substance Registry System: Quinoxaline, 2,3-bis(4-bromophenyl)-(19802-70-1)

Safety Data

• Hazardous Substances Data: 19802-70-1(Hazardous Substances Data)

Upstream product

• 37580-82-8 1,2-di-(4-bromophenyl)-1,2-ethanediol 
• 88-74-4 2-nitro-aniline 
• 2789-89-1 1,2-bis(4-bromophenyl)acetylene 
• 95-54-5 1,2-diamino-benzene 
• 88-67-5 2-Iodobenzoic acid 
• 4254-18-6 1,2-bis(4-bromophenyl)-2-hydroxyethan-1-one 
• 528-29-0 1,2-Dinitrobenzene 
• 1122-91-4 4-bromo-benzaldehyde 
• 589-87-7 1,4-bromoiodobenzene 
• 35578-47-3 4,4'-dibromobenzil 
• 480-96-6 benzofurazan oxide 
• 39229-12-4 4-bromobenzil 

Downstream Products

• 186406-39-3 2,3-bis[p-(phenylethynyl)phenyl]quinoxaline 
• 1159445-50-7 4,4'-(quinoxaline-2,3-diyl)bis{N-phenyl-N-[4-(5-pheyl-1,3,4-oxadiazol-2-yl)phenyl]aniline} 
• 16155-74-1 2,3-bis(4-((E)-styryl)phenyl)quinoxaline 
• 96589-94-5 2,3-di([1,1′-biphenyl]-4-yl)quinoxaline 
• 1417197-08-0 C₈₀H₄₄Br₈Cl₂Ir₂N₈ 
• 1016959-07-1 2,3-bis[4-(9-phenylcarbazol-3-yl)phenyl]quinoxaline 
• 863767-18-4 2,3-bis[4-(4-diphenylaminophenyl)phenyl]quinoxaline 
• 877176-68-6 (4,4'-(quinoxaline-2,3-diyl)diphenyl)boronic acid 
• 1092116-30-7 C₆₀H₅₀N₆O₄ 
• 1092116-28-3 C₆₄H₅₂N₄O₄ 
• 1092116-27-2 C₅₂H₄₄N₄O₄ 

Relevant articles and documents

An iminodibenzyl-quinoxaline-iminodibenzyl scaffold as a mechanochromic and dual emitter: donor and bridge effects on optical properties

The influence of phenyl linkage and donor strength on the photophysical properties of new derivatives of quinoxaline-containing iminodibenzyl and iminostilbene moieties is studied. The donor-acceptor derivatives showed dual thermally activated delayed fluorescence (TADF) and room temperature phosphorescence (RTP) despite a large energy gap between the excited singlet and triplet states (ca. 0.5 eV). This extremely rare observation is explained by the twisted and rigidified structure of the iminodibenzyl moiety.

Quinoxaline and Pyrido[x,y-b]pyrazine-Based Emitters: Tuning Normal Fluorescence to Thermally Activated Delayed Fluorescence and Emitting Color over the Entire Visible-Light Range

Quinoxaline (Q), pyrido[2,3-b]pyrazine (PP) and pyrido[3,4-b]pyrazine (iPP) are used as electron acceptors (A) to design a series of D–π–A-type light-emitting materials with different donor (D) groups. By adjusting the molecular torsion angles through changing D from carbazole (Cz) to 10-dimethylacridine (DMAC) or 10H-phenoxazine (PXZ) for a fixed A, the luminescence is tuned from normal fluorescence to thermally activated delayed fluorescence (TADF). By gradually enhancing the intramolecular charge-transfer extent through combining different D and A, the emission color is continuously and regularly tuned from pure blue to orange–red. Organic light-emitting diodes (OLEDs) containing these compounds as doped emitters exhibit bright electroluminescence with emission colors covering the entire visible-light range. An external quantum efficiency (ηext) of 1.2 % with excellent color coordinates of (0.16, 0.07) is obtained for the pure-blue OLED of Q-Cz. High ηext values of 12.9 (35.9) to 16.7 % (51.9 cd A?1) are realized in the green, yellow, and orange–red TADF OLEDs. All PP- and iPP-based TADF emitters exhibit superior efficiency stabilities to that of analogues of Q. This provides a practical strategy to tune the emission color of Q, PP, and iPP derivatives with the same molecular skeletons over the entire visible-light range.

ORGANIC COMPOUNDS AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME

The present disclosure relates to an organic compound and an organic light emitting display device using the same wherein the organic compound is represented by Chemical Formula 1 and a display device using the organic compound. The organic compound represented by Chemical Formula 1 has excellent electron transport properties and durability and is used for an electron transport layer of an organic light emitting element, thereby lowering a driving voltage and improving the luminous efficiency and lifetime. (In the above Chemical Formula 1, at least two of X1, X2 and X3 are N, Y1 and Y2 are each independently a substituted or unsubstituted phenylene group or a single bond, at least one of Ar1 and Ar2 is selected from a substituted or unsubstituted triazine group, a functional group represented by Chemical Formula 2 and a functional group represented by Chemical Formula 3.)

In water organic synthesis: Introducing itaconic acid as a recyclable acidic promoter for efficient and scalable synthesis of quinoxaline derivatives at room temperature

Substituted quinoxaline derivatives are traditionally synthesized by co-condensation of various starting materials. Herein, we describe a novel environmentally benign in water synthetic route for the synthesis of structurally and electronically diverse ninety quinoxalines with readily available substituted o-phenylenediamine and 1,2-diketones using cheap and biodegradable itaconic acid as a mild acid promotor in 1 hours. The reaction is performed at room temperature, which proceeds through cyclo-condensation reaction followed by obtaining the aforesaid nitrogen-containing heterocyclic adducts without performing the column chromatography up to 96% total yields. The simplicity, high efficiency, and reusable of the catalyst merits this reaction condition as “green synthesis” which enables it to be useful in synthetic transformations upto gram scale level.