357645-37-5

Basic information

• Product Name: 2,7-Dibromo-9,9-bis(4-methylphenyl)-9H-fluorene
• Synonyms: 2,7-Dibromo-9,9-bis(4-methylphenyl)-9H-fluorene;2,7-DibroMo-9,9-di-p-tolyl-9H-fluorene
• CAS NO: 357645-37-5
• Molecular Formula: C₂₇H₂₀Br₂
• Molecular Weight: 504.26
• Mol File: 357645-37-5.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 546.2±50.0 °C(Predicted)
• Appearance: /
• Density: 1.482
• Storage Temp.: 2-8°C
• CAS DataBase Reference: 2,7-Dibromo-9,9-bis(4-methylphenyl)-9H-fluorene(CAS DataBase Reference)
• NIST Chemistry Reference: 2,7-Dibromo-9,9-bis(4-methylphenyl)-9H-fluorene(357645-37-5)
• EPA Substance Registry System: 2,7-Dibromo-9,9-bis(4-methylphenyl)-9H-fluorene(357645-37-5)

Safety Data

• Hazardous Substances Data: 357645-37-5(Hazardous Substances Data)

Usage

General Description

2,7-Dibromo-9,9-bis(4-methylphenyl)-9H-fluorene is a chemical compound that is commonly used as a building block in organic synthesis. It is a brominated derivative of fluorene, which is a polycyclic aromatic hydrocarbon. 2,7-Dibromo-9,9-bis(4-methylphenyl)-9H-fluorene is often used in the production of organic light-emitting diodes (OLEDs) and other electronic devices, due to its high thermal stability and good charge transport properties. It is also used in the synthesis of other functional materials, such as dyes, pharmaceuticals, and photocatalysts. Additionally, it is known for its potential environmental impacts and should be handled with care to minimize its release into the environment.

Upstream product

• 108-88-3 toluene 
• 357645-34-2 2,7-dibromo-9-(p-tolyl)fluoren-9-ol 
• 14348-75-5 2,7-dibromofluorene-9-one 
• 4294-57-9 para-methylphenylmagnesium bromide 

Downstream Products

• 474918-37-1 3,3,4,4-tetramethyl-1-(2-(3,3,4,4-tetramethylborolan-1-yl)-9,9-di-p-tolyl-9H-fluoren-7-yl)borolane 

Relevant articles and documents

Ter(9,9-diarylfluorene)s: Highly efficient blue emitter with promising electrochemical and thermal stability

Novel ter(9,9-diarylfluorene)s were synthesized by a Suzuki-coupling reaction of 2-bromofluorene (1) and 2,7-fluorenediboronic ester derivatives (3) with high isolated yields (63-86%). The X-ray structure analysis of ter(9,9′-spirobifluorene) (4aa) revealed that the conjugated chromophore adopts a helical conformation. This conformation effectively releases the steric interaction between the fluorene moieties and prevents inter-chromophore interactions. The introduction of aryl groups at the C9 position of fluorene was highly beneficial to the thermal and morphological stability of these oligomers. These terfluorenes exhibit intense blue fluorescence with excellent quantum yields both in solution (～100%) and in solid state (66-90%), and possess interesting reversible redox properties. Highly efficient blue light-emitting OLED devices were fabricated using 4aa and 4cc as emitters as well as hole transporters. The devices exhibit low turn-on voltage (～3 V) and high EL external quantum efficiency (2.5-3%). Copyright