38268-11-0

Basic information

• Product Name: 3,4-bis-(4-bromo-phenyl)-2,5-diphenyl-cyclopentadienone
• Synonyms: 3,4-bis-(4-bromo-phenyl)-2,5-diphenyl-cyclopentadienone
• CAS NO: 38268-11-0
• Molecular Weight: 542.269
• Mol File: 38268-11-0.mol

Chemical Properties

• CAS DataBase Reference: 3,4-bis-(4-bromo-phenyl)-2,5-diphenyl-cyclopentadienone(CAS DataBase Reference)
• NIST Chemistry Reference: 3,4-bis-(4-bromo-phenyl)-2,5-diphenyl-cyclopentadienone(38268-11-0)
• EPA Substance Registry System: 3,4-bis-(4-bromo-phenyl)-2,5-diphenyl-cyclopentadienone(38268-11-0)

Safety Data

• Hazardous Substances Data: 38268-11-0(Hazardous Substances Data)

Upstream product

• 106-37-6 1.4-dibromobenzene 
• 1122-91-4 4-bromo-benzaldehyde 
• 4254-18-6 1,2-bis(4-bromophenyl)-2-hydroxyethan-1-one 
• 35578-47-3 4,4'-dibromobenzil 
• 102-04-5 1,3-Diphenylpropanone 

Downstream Products

• 391248-33-2 3,4-bis-[4-(benzhydrylidene-amino)-phenyl]-2,5-diphenyl-cyclopenta-2,4-dienone 
• 866393-60-4 2,5-diphenyl-3,4-bis[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]cyclopenta-2,4-dien-1-one 
• 950506-61-3 C₃₄H₂₂Br₂ 
• 1426563-45-2 C₇₉H₈₄OSi₂ 
• 1432440-88-4 2,5-diphenyl-3,4-bis(4'-((E)-(4-((triisopropylsilyl)ethynyl)phenyl)diazenyl)-[1,1'-biphenyl]-4-yl)cyclopenta-2,4-dienone 
• 1319732-99-4 5,6-bis(4-bromophenyl)-4,7-diphenylisoindoline-1,3-dione 
• 878396-23-7 4,5-bis(4-bromophenyl)-3,6-diphenyl-α-pyrone 
• 1113056-94-2 2,3-bis(4-bromophenyl)-1,4-diphenyldibenzothiophene 
• 96216-32-9 (Z)-1,2-dibenzoyl-1,2-bis(4-bromophenyl)ethene 
• 1033016-27-1 C₅₆H₄₀Br₂O₂ 
• 950506-66-8 C₃₄H₂₁Br₃ 
• 582299-76-1 3,4-bis-(4-amino-phenyl)-2,5-diphenyl-cyclopenta-2,4-dienone 

Relevant articles and documents

A Large π-Extended Carbon Nanoring Based on Nanographene Units: Bottom-Up Synthesis, Photophysical Properties, and Selective Complexation with Fullerene C70

Herein we report the organoplatinum-mediated bottom-up synthesis, characterization, and properties of a novel large π-extended carbon nanoring based on a nanographene hexa-peri-hexabenzocoronene (HBC) building unit. This tubular structure can be considered as an example of the longitudinal extension of the cycloparaphenylene scaffold to form a large π-extended carbon nanotube (CNT) segment. The cyclic tetramer of a tetramesityl HBC ([4]CHBC) was synthesized by the reaction of a 2,11-diborylated hexa-peri-hexabenzocoronene with a platinum complex, followed by reductive elimination. The structure of this tubular molecule was further confirmed by physical characterization. Theoretical calculations indicate that the strain energy of this nanoring is as high as 49.18 kcal mol?1. The selective supramolecular host–guest interaction between [4]CHBC and C70was also investigated.

Temperature-Dependent Multidimensional Self-Assembly of Polyphenylene-Based "Rod-Coil" Graft Polymers

We present a novel type of "rod-coil" graft copolymer containing a polyphenylene backbone linked with poly(ethylene oxide) (PEO) side chains. Such graft copolymers manifest unprecedented temperature-dependent one-dimensional (1D) and two-dimensional (2D)

Polarizable polysiloxane stationary phase containing a cyano unit attached to an aromatic side group for highly selective separation of H-bonding and aromatic analytes

A new polarizable polysiloxane stationary phase containing a cyano unit attached to an aromatic side group, called CPPP [14.6% 3,4-bis(4-cyanophenyl)-2,5-diphenyl phenyl polysiloxane], was synthesized and used as a stationary phase for capillary gas chrom

Amphiphilic dendrimers control protein binding and corona formation on liposome nanocarriers

Amphiphilic polyphenylene dendrimers (PPDs) with distinct lipophilic and positively or negatively charged surface groups were adsorbed onto liposomes and their impact on protein adsorption in blood plasma was studied. The PPD corona reduced binding of spe

LIGHT-EMITTING MATERIAL, ORGANIC LIGHT-EMITTING DEVICE, AND COMPOUND

A compound represented by the general formula (11) is useful as a light-emitting material. R1, R2, R4 and R5 represent a group represented by the general formula (2), R11 to R20 represent a hydrogen atom or a substituent, and L12 represents a substituted or unsubstituted arylene group or a substituted or unsubstituted heteroarylene group.

Full-Color Delayed Fluorescence Materials Based on Wedge-Shaped Phthalonitriles and Dicyanopyrazines: Systematic Design, Tunable Photophysical Properties, and OLED Performance

Purely organic light-emitting materials, which can harvest both singlet and triplet excited states to offer high electron-to-photon conversion efficiencies, are essential for the realization of high-performance organic light-emitting diodes (OLEDs) without using precious metal elements. Donor-acceptor architectures with an intramolecular charge-transfer excited state have been proved to be a promising system for achieving these requirements through a mechanism of thermally activated delayed fluorescence (TADF). Here, luminescent wedge-shaped molecules, which comprise a central phthalonitrile or 2,3-dicyanopyrazine acceptor core coupled with various donor units, are reported as TADF emitters. This set of materials allows systematic fine-tuning of the band gap and exhibits TADF emissions that cover the entire visible range from blue to red. Full-color TADF-OLEDs with high maximum external electroluminescence quantum efficiencies of up to 18.9% have been demonstrated by using these phthalonitrile and 2,3-dicyanopyrazine-based TADF emitters.

Microwave-assisted synthesis of functionalized Shvo-type complexes

A simple and expeditious microwave-assisted procedure for the synthesis of a variety of Shvo-type ruthenium complexes has been developed by reacting Ru3(CO)12 with variously functionalized tetraarylcyclopentadienones under microwave irradiation in MeOH. Ligand precursors have also been prepared under microwave heating by a bis-aldol condensation of 1,3-diphenylacetone with variously functionalized aromatic diketones. All the reactions were very fast and clean, leading to good yields and purities.

Racemisation of 1-arylethylamines with Shvo-type organoruthenium catalysts

Variation of the electronic nature of the tetraphenylcyclopentadienone ligand in organoruthenium complexes influences their utility for racemisation of model chiral amines. Our study highlights the need to balance reactivity and selectivity in the design of racemisation catalysts. Electron-poor Shvo-type catalysts are, at first sight, more effective for racemisation, but yield more by-product; electron-rich complexes are less proficient at racemisation, but lead to less by-product.

Photoswitchable conductivity in a rigidly dendronized salt

Light switch: A dendronized salt exhibiting photoswitchable conductivity was designed and synthesized. The salt consists of tetrabutylammonium cations and large, rigidly dendronized borate anions, each bearing eight photoresponsive azobenzene moieties. The conductivity of solutions of this salt can be reversibly switched by irradiation, owing to light-induced changes in the overall size of the dendronized anion and the density of its polyphenylene shell. Copyright

Synthesis and properties of novel spirobifluorene-cored dendrimers

Two novel spirobifluorene-cored dendrimers containing polyphenylene dendrons with the carbazole (spiro-Cz) and cyano surface groups (spiro-CN) were synthesized and characterized. Both the dendrimers show good solubility in common organic solvents. Spiro-Cz is amorphous even when it is obtained directly from organic solvents and an extremely high glass transition temperature of 332 °C is detected. These dendrimers can be reversibly oxidized and reduced in electrochemical measurements. They are blue fluorescent with small red-shift in solid film absorption and fluorescence spectra. These advantageous merits are suggested to benefit from the combined contribution from the spirobifluorene core and the bulky polyphenylene dendrons. They were used as emitting layer to fabricate organic light-emitting diodes (OLEDs). Deep-blue electroluminescence was obtained for both dendrimers devices.