169169-89-5

Basic information

• Product Name: Phenol, 4,4'-(2,7-dibromo-9H-fluoren-9-ylidene)bis-
• CAS NO: 169169-89-5
• Molecular Formula: C25H16Br2O2
• Molecular Weight: 508.209
• Mol File: 169169-89-5.mol
• Article Data: 19

Chemical Properties

• CAS DataBase Reference: Phenol, 4,4'-(2,7-dibromo-9H-fluoren-9-ylidene)bis-(CAS DataBase Reference)
• NIST Chemistry Reference: Phenol, 4,4'-(2,7-dibromo-9H-fluoren-9-ylidene)bis-(169169-89-5)
• EPA Substance Registry System: Phenol, 4,4'-(2,7-dibromo-9H-fluoren-9-ylidene)bis-(169169-89-5)

Safety Data

• Hazardous Substances Data: 169169-89-5(Hazardous Substances Data)

Usage

General Description

Phenol, 4,4'-(2,7-dibromo-9H-fluoren-9-ylidene)bis- is a chemical compound with the molecular formula C34H18Br4O. It is a derivative of phenol and contains two bromine atoms and a fluorene group. Phenol, 4,4'-(2,7-dibromo-9H-fluoren-9-ylidene)bis- is used in various industrial applications, including as a chemical intermediate in the production of dyes, pharmaceuticals, and agrochemicals. It is also used as a catalyst in organic synthesis reactions. Additionally, it has been studied for its potential use in organic light-emitting diodes (OLEDs) and other electronic devices. However, it is important to handle this compound with care, as it can be harmful if ingested or if it comes into contact with the skin or eyes.

Upstream product

• 14348-75-5 2,7-dibromofluorene-9-one 
• 108-95-2 phenol 
• 16433-88-8 2,7-dibromo-9H-fluorene 

Downstream Products

• 634558-40-0 2,7-dibromo-9,9-bis(4-(octyloxy)phenyl)-9H-fluorene 
• 801321-06-2 2,7-dibromo-9,9-bis[4-(3,7-dimethyloctyloxy)phenyl]fluorene 
• 860495-27-8 2,7-dibromo-9,9'-bis[4-(methoxymethyloxy)phenyl]-9H-fluorene 
• 210347-59-4 2,7-dibromo-9,9-bis(4-methoxyphenyl)-9H-fluorene 
• 860495-22-3 2,7-dibromo-9,9'-bis[4-(2-methoxyethoxymethoxy)phenyl]-9H-fluorene 
• 1201804-92-3 9,9-bis-4-(2-morpholinoethoxy)phenyl-2,7-dibromofluorene 
• 1196977-79-3 9,9-bis(4-propargyloxyphenyl)-2,7-dibromofluorene 
• 868659-02-3 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9-bis(4-hexyloxyphenyl)fluorene 
• 1403598-86-6 2-bromo-9,9-bis(4-ethoxyphenyl)-7-(4-methoxyphenyl)fluorene 
• 1403598-88-8 7-(4-methoxyphenyl)-9,9-bis(4-ethoxyphenyl)fluoren-2-ylboronic acid pinacol ester 
• 1403598-92-4 2-(2-(2-(3-bromopropoxy)naphth-6-yl)-9,9-diethylfluoren-7-yl)-9,9-bis(4-ethoxyphenyl)-7-(4-methoxyphenyl)fluorene 
• 1403598-94-6 C₇₀H₇₀NO₄⁽¹⁺⁾*Br^(1-) 
• 1403598-84-4 2,7-dibromo-9,9-bis(4-ethoxyphenyl)fluorene 
• 1581767-80-7 2,7-dibromo-9,9-bis(4-(4-(5-(4-tert-butylphenyl)-[1,3,4]oxadiazol-2-yl)phenyloxy)phenyl)fluorene 

Relevant articles and documents

Synthesis, properties, and fuel cell performance of perfluorosulfonated poly(arylene ether)s

Poly(arylene ether)s containing superacid groups (FSPEs) were synthesized as proton conducting membranes for fuel cell applications. To obtain the title ionomers, a series of brominated poly(arylene ether)s were synthesized and perfluorosulfonated via Ullmann coupling. The chemical structure and the ion exchange capacity (IEC) of the FSPEs were characterized by 1H and 19FNMR spectra. Tough, flexible, and transparent membranes with the IEC ranging from 0.34 to 1.29 mequivg-1 were obtained by solution casting. The FSPE membranes did not show obvious glass transition behavior up to the decomposition temperature (180 °C). Microscopic analyses revealed homogeneous and well-connected ionic clusters for the high IEC membrane. Compared to conventional sulfonated poly(arylene ether) membranes, the FSPE membranes showed much higher proton conductivity. The highest proton conductivity of 0.07 S cm-1 was achieved at 80 °C and 86% relative humidity (RH) with the IEC = 1.29 mequivg-1 membrane. A fuel cell using the FSPE membrane showed comparable performance to that of a Nafion cell at 78% RH and 80 °C.

Synthesis of a novel fluorene-based conjugated polymer with pendent bulky caged adamantane moieties and its application in the detection of trace DNT explosives

A novel fluorene-based conjugated polymer with phenylene spacers and steric bulky adamantane moieties in side chains has been synthesized by palladium-catalyzed Suzuki coupling reactions. This design strategy offers several advantages for the detection of trace 2,4-dinitrotoluene (DNT) vapor. The incorporation of the two groups into polymer side chains could retain an effective conjugation length and prevent the π-stacking of polymer chains. The detection of DNT vapor indicated that the polymer displayed higher fluorescence quenching sensitivity toward the explosives in films compared to reference polymers. The fluorescence quenching efficiency of the fluorescent polymer achieved 33.3% in 10 s and 71.1% in 60 s. The pathways or cavities generated by the two spacers are beneficial for the rapid diffusion of explosive vapor into the film interiors and increase the fluorescence quenching efficiency of the film.

Blue organic light emitting devices with improved colour purity and efficiency through blending of poly(9,9-dioctyl-2,7-fluorene) with an electron transporting material

Organic light emitting devices (OLEDs) containing a single blended layer of poly(9,9-dioctyl-2,7-fluorene) (PFO) or poly[9,9-bis(4-octyloxyphenyl)-2,7- fluorene] (PFOPh) and an electron transporting material 2,7-bis[2-(4-tert- butylphenyl)-1,3,4-oxadiazol-5-yl]-9,9-dihexylfluorene (DFD) have been fabricated. The long-wavelength emission (>480 nm) observed for pure PFO and PFOPh structures was reduced significantly and a pure blue emission, with Commission Internationale de l'Eclairage (CIE) colour coordinates (0.157, 0.037), could be achieved. The blended-layer devices also possessed considerably higher efficiencies than the pure PFO, pure PFOPh or the pure DFD structures. It is suggested that the presence of DFD results in an improved balance of charge carriers and provides a micro-encapsulation environment for the polymer chains, hindering the formation of fluorenone defects and their red-shifted emission. The Royal Society of Chemistry.

Fluorescent diphenylfluorene-pyrenyl copolymer with dibenzothiophene-S,S-dioxide and adamantane units for explosive vapor detection

A fluorescent diphenylfluorene-pyrenyl copolymer with dibenzothiophene-S,S-dioxide (SO) and adamantane units has been successfully synthesized via a Suzuki-Miyaura cross-coupling reaction. After studying the sensing properties of a series of diphenylfluorene-pyrenyl materials towards TNT vapor, it was found that the dibenzothiophene-S,S-dioxide (SO) units introduced into the diphenylfluorenepyrenyl copolymers can simultaneously enhance the photostability and sensing performance of the fluorescent sensing materials. This simple strategy can be used as a promising approach for the development of fluorescent conjugated sensing materials.

A General and Air-tolerant Strategy to Conjugated Polymers within Seconds under Palladium(I) Dimer Catalysis

While current M0/MII based polymerization strategies largely focus on fine-tuning the catalyst, reagents and conditions for each and every monomer, this report discloses a single method that allows access to a variety of different conjugated polymers within seconds at room temperature. Key to this privileged reactivity is an air- and moisture stable dinuclear PdI catalyst. The method is operationally simple, robust and tolerant to air.

COMPOUND, COATING COMPOSITIONS COMPRISING THE SAME, AND ORGANIC LIGHT EMITTING DEVICE USING THE SAME

The present invention relates to a compound represented by chemical formula 1. The present invention further relates to a coating composition containing the compound, and an organic light-emitting device formed by using the same. According to the present invention, it is possible to secure low driving voltage, high luminous efficiency, and high lifespan properties.COPYRIGHT KIPO 2018