357645-37-5

Usage

Uses

Used in Electronics Industry:
2,7-Dibromo-9,9-bis(4-methylphenyl)-9H-fluorene is used as a key component in the production of organic light-emitting diodes (OLEDs) for its ability to enhance the performance and efficiency of these devices.
Used in Organic Synthesis:
2,7-Dibromo-9,9-bis(4-methylphenyl)-9H-fluorene serves as a versatile building block in the synthesis of various functional materials, including dyes, pharmaceuticals, and photocatalysts, due to its unique structural and chemical properties.
Used in Research and Development:
2,7-Dibromo-9,9-bis(4-methylphenyl)-9H-fluorene is utilized in research for the development of new materials and technologies, given its potential applications in advancing fields such as energy, medicine, and environmental science.
Environmental Consideration:
It is important to handle 2,7-Dibromo-9,9-bis(4-methylphenyl)-9H-fluorene with care due to its potential environmental impacts, ensuring proper management to minimize its release into the environment and mitigate any adverse effects.

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 academic research and scientific papers

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

Synthesis and properties of 9,9-diarylfluorene-based triaryldiamines

(matrix presented) 9,9-Diaryl-2,7-dibromofluorene was synthesized by a triflic acid promoted Friedel-Crafts reaction. Introduction of diarylamino groups at its C2 and C7 positions by a Pd-catalyzed amination results in the formation of a novel class of triaryldiamines. The 9,9-diaryl substituents at the central linkage play a less important role in the photophyscial properties but affect the oxidation potential and improve the morphological stability of these new triarylamines.