439797-69-0

Usage

Uses

Used in Dye and Pigment Manufacturing:
4,4'-DIBROMO-2-NITRO-BIPHENYL is used as a key component in the production of dyes and pigments, contributing to the coloration and stability of these substances in various applications.
Used in Pharmaceutical Production:
As a chemical intermediate, 4,4'-DIBROMO-2-NITRO-BIPHENYL plays a crucial role in the synthesis of certain pharmaceuticals, aiding in the development of new medications and therapies.
Used in Agricultural Chemical Production:
4,4'-DIBROMO-2-NITRO-BIPHENYL is also utilized as an intermediate in the creation of agricultural chemicals, potentially contributing to the effectiveness of pesticides and other agrochemicals.
Used in Chemical Research:
4,4'-DIBROMO-2-NITRO-BIPHENYL may be employed in research settings to study its properties and reactions, furthering the understanding of its behavior in chemical processes and potential applications.

Upstream product

• 2243-78-9 2-nitro-benzidine 
• 92-86-4 4-(4-bromophenyl)bromobenzene 

Downstream Products

• 136630-39-2 2,7-dibromo-9H-carbazole 
• 1206593-05-6 C₁₉H₁₂Br₃NO 
• 1206593-09-0 C₂₀H₁₃Br₂N 
• 1206593-10-3 C₂₃H₁₉Br₂N 
• 1206593-11-4 C₁₉H₁₀Br₃N 
• 1206593-04-5 C₂₃H₂₁Br₂NO 
• 83834-10-0 3,7-dibromodibromodibenzo[b,d]thiophene 
• 888041-37-0 2,7-dibromotriphenylene 
• 726169-75-1 2,7-dibromo-9-octyl-9H-carbazole 
• 654676-12-7 2,7-dibromo-9-n-hexyl-9H-carbazole 
• 544436-46-6 2,7-dibromo-9-(2-ethyl-hexyl)-9H-carbazole 
• 1313900-20-7 2,7-dibromo-9-(4-bromophenyl)-9H-carbazole 

Relevant academic research and scientific papers

Nanoscale Metal-Organic Frameworks for Ratiometric Oxygen Sensing in Live Cells

We report the design of a phosphorescence/fluorescence dual-emissive nanoscale metal-organic framework (NMOF), R-UiO, as an intracellular oxygen (O2) sensor. R-UiO contains a Pt(II)-porphyrin ligand as an O2-sensitive probe and a Rho

Red organic electroluminescent material and preparation method thereof

The invention belongs to the technical field of photoelectric display devices, and particularly relates to a red organic electroluminescent material and a preparation method thereof. The invention provides the red light organic electroluminescent material, the structure of which is represented by formula (I): wherein R is a hydrogen atom, a linear chain or branched chain alkyl group with a carbonatom number of 1-20, x is 0-1, and the polymerization degree n is 3-800. The invention also provides a preparation method of the red light organic electroluminescent material. The preparation method comprises that 2', 7 '-dibromo-1, 2, 7, 8-tetraoctyl-9'-spiro-bis[fluorene], 2, 2'-(1', 2 ', 7', 8 '-tetraoctyl-9, 9'-spiro-bis [fluorene]-2, 7-diyl)bis(4, 4, 5, 5-tetramethyl-1, 3, 2-dioxaborane) and3, 10-dibromo-14-(3-(5-phenyl-1, 3, 4-oxadiazole-2-yl) phenyl)-14H-bis (S, S-dioxo-dibenzothiophene)pyrrole undergo a Suzuki coupling reaction to produce a polymer shown as a formula (I). The red light organic electroluminescent material and the preparation method thereof provided by the invention solve the technical problem of poor electroluminescent performance of the existing red-light polymer.

KIT FOR DETECTING ctDNA AND EXPRESSION OF DRUG-RESISTANT GENES RELATED TO APPLICABILITY OF TUMOR CHEMOTHERAPEUTIC DRUGS

A kit for determining ctDNA concentration and a method for determining ctDNA concentration is disclosed, wherein the method comprising dissolving extracted ctDNA in Tris-HCl buffer with pH>7.0 and adding into the buffer 2,7-bis(1-methyl-4-vinylpyridine)-9-ethylcarbazole iodised salt as a molecular probe, calculating the concentration of ctDNA in the solution by measuring the Fluorescence intensity of the solution. It has extremely high sensitivity in the determination of 0 μg/ml?50 μg/ml ctDNA solution.

Multi-photon properties in various condensed phases of dendritic chromophores derived from carbazole and indenoquioxaline units: Synthesis and characterization

We have used functionalized carbazoles and indenoquonoxalines as the main building units and enthynyl groups as the π-linkages to construct two novel dendritic fluorophores and studied their degenerate multi-photon absorption properties in both the solution phase and the neat-film state within femtosecond and nanosecond regions. In our experiments, these model compounds are found to manifest strong and widely dispersed two-photon absorption as well as effective power-limiting properties against ultra-short laser pulses in the near-IR region. In addition, both chromophores exhibit medium to strong three-photon-induced fluorescence, indicating such scaffold may serve as a reference structural motif for the development of three-photon materials.

Copper(II)-Catalyzed Iodinations of Carbazoles: Access to Functionalized Carbazoles

A copper-catalyzed iodination of carbazoles has been developed. Barluenga's reagent IPy2BF4 is used to generate a soft electrophilic halonium species for the iodination of the carbazoles. This report represents the first concept of copper-catalyst-promoted electrophilic halogenation of carbazoles. We demonstrated numerous applications of this methodology synthesizing diverse carbazole derivatives, i.e., both electron-rich and electron-deficient systems.

Double-(S, S - dioxo - dibenzo thiophene) and high output compound and its preparation method and application

The invention discloses a bi(S,S-dioxo-dibenzothiophene) five-membered ring compound and a preparation method and application thereof. The existence of bi-sulfuryl in the bi(S,S-dioxo-dibenzothiophene) five-membered ring compound is more beneficial for improving the electron affinity of molecules. Alkyl chains are introduced on a five-membered ring, so that the solubility of monomers in an organic solvent can be obviously improved. The plane conjugacy of the compound is better, and is beneficial for the transmission of a current carrier. Higher D-A mutual effect existing in the molecules of the compound endows higher fluorescence of the material. The bi(S,S-dioxo-dibenzothiophene) five-membered ring compound is synthesized and obtained through common organic chemistry reactions such as substitution reactions, Suzuki coupling and ring-closure reactions and oxidation reactions. The compound has good solubility in the organic solvent, and is suitable for solution processing. The compound has wide application prospects in the fields of organic luminescence display, organic photovoltaic cells and organic field-effect tubes.

Synthetic method of 2,7-dibromo-benzo[9,10]phenanthrene

The invention belongs to the technical field of organic chemical synthesis, and relates to a synthetic method of triphenylene, in particular to a synthetic method of 2,7-dibromo-benzo[9,10]phenanthrene. The synthetic method includes dissolving 4,4'-dibromobiphenyl in dichloromethane; adopting a mixed solution of nitric acid and sulfuric acid for nitration reaction, and carrying out washing, concentrating and recrystallizing to obtain 2-nitro-4,4'-dibromobiphenyl, wherein the yield is 82%; reducing a nitro group into an amino group by a Fe/NH4Cl system, and subjecting the obtained product and benzene to diazo coupling reaction to obtain 4,4'-dibromo-1,1',2',1-terphenyl; performing oxidative coupling by a Pd/trifluoromethanesulfonic acid system to obtain the 2,7-dibromo-benzo[9,10]phenanthrene, wherein the yield is 62.5%, and the HPCL purity is 99.5%. The synthetic method avoids the problems of complex synthesis, low yield and environmental pollution in conventional methods.

Two Anthracene-Based Copolymers as the Hole-Transporting Materials for High-Performance Inverted (p-i-n) Perovskite Solar Cells

Two anthracene-based copolymers, the thiophene-bridged carbazole-anthracene copolymer (abbreviated as PCBZANT) and the thiophene-bridged triphenylamine-anthracene copolymer (abbreviated as PTPAANT), have been developed as the hole-transporting materials (HTMs) for the inverted perovskite solar cells. They were thermally stable with decomposition temperatures of 435 and 420 °C. The High Occupied Molecular Orbitals (HOMO) of -5.15 and -5.24 eV of two copolymers facilitated the hole carriers transfer from the perovskite layer (CH3NH3PbI3, HOMO: -5.4 eV) in contrast to poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS, HOMO: -4.9 eV). The solar cell with PCBZANT (abbreviated as the PCBZANT device) showed the highest power conversion efficiency (PCE) of 15.50%, while the cell with PTPAANT (abbreviated as the PTPAANT device) showed the highest PCE of 14.52%, with increases of 36.2% and 27.6%, respectively, relative to the PEDOT:PSS device. The thorough analysis disclosed that the high performance was mainly ascribed to the enhanced open-circuit voltage (VOC) and short-circuit current density (JSC), being contributed from the efficient hole-carrier extraction, the high hole mobility of two copolymers, and the high-quality perovskite film with large crystal size and less defect. With strong absorption in the range of 350-500 nm, the polymers decreased the destruction of UV-radiation on the perovskite layer as UV-filters and improved the stability of the inverted cells.

Task-specific design of a hierarchical porous aromatic framework as an ultrastable platform for large-sized catalytic active site binding

An amine-tagged hierarchical porous aromatic framework PAF70-NH2 with ultra-stability and narrowly distributed mesopores was synthesized. PAF70-NH2 has high potential for covalently immobilizing a relatively large-sized catalyst inside its pores. This work gave a perfect example of using PAF70-NH2 as a platform for completely recyclable heterogeneous organocatalysis.

Syntheses, structures, luminescence and magnetic properties of seven isomorphous metal-organic frameworks based on 2,7-bis(4-benzoic acid)-: N -(4-benzoic acid)carbazole

We report herein seven novel lanthanide metal-organic frameworks (Ln-MOFs), [M(L27)(DMA)(H2O)·XH2O]n (TCZ-M), (M = Nd, Sm, Eu, Gd, Tb, Dy, Ho), (X = 2 or 3) (H3L27 = 2,7-bis(4-benzoic acid)-N-(4-benzoic acid)carbazole, DMA = N,N-dimethylacetamide, TCZ = "T"-shape carbazole-based MOFs, L27 = fully deprotonated H3L273- ligand). X-ray crystallography showed that all the TCZ-M (M = Nd, Sm, Eu, Gd, Tb, Dy, Ho) are isomorphous and possess a 3,6-connected three-dimensional (3D) framework with a point symbol of {4·62}2{42·610·83}. The photoluminescence measurement indicates that TCZ-Eu shows reddish-orange emission bands and TCZ-Sm shows both visible and near-infrared (NIR) emission bands. Magnetic susceptibility measurements show deviations from the Curie law mainly owing to the split of the ground term due to the ligand field and spin-orbit coupling in TCZ-Eu and TCZ-Sm. The magnetic properties of TCZ-M (M = Nd, Gd, Tb, Dy, Ho) are also investigated, and the results indicate a ferromagnetic interaction between the Tb3+ magnetic centers in TCZ-Tb and the antiferromagnetic interactions in TCZ-M (M = Nd, Gd, Dy, Ho).