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Usage

Uses

Used in Organic Electronics:
7-Bromo-9,9,9',9'-tetraethyl-2,2'-bifluorene is utilized as a component in organic electronic devices for its unique electronic properties, which can enhance the performance and efficiency of these devices.
Used in Materials Science:
In the field of materials science, 7-Bromo-9,9,9',9'-tetraethyl-2,2'-bifluorene is employed as a building block for the development of new materials with specific properties, such as improved stability or conductivity, owing to its rigid and symmetrical molecular structure.
Used in Research and Development:
7-Bromo-9,9,9',9'-tetraethyl-2,2'-bifluorene serves as a subject of interest in research and development for its potential to contribute to the advancement of organic chemistry and the discovery of new applications in various industries.

Upstream product

• 197969-58-7 2,7-dibromo-9,9-diethyl-9H-fluorene 

Relevant academic research and scientific papers

Solution-processable organic fluorescent dyes for multicolor emission in organic light emitting diodes

Four novel fluorescent dyes, bis(difluorenyl)amino-substituted carbazole 1, pyrene 2, perylene 3, and benzothiadiazole 4, were synthesized by C-N cross-coupling with a palladium catalyst. These dyes are soluble in common organic solvents, and their uniform films were formed by spin-coating from their solutions. Their glass transition temperatures were sufficiently high (120-181°C) to form amorphous films for organic light emitting diodes. These solution processable dyes exhibited strong photoluminescence (PL) in the film form (1: sky blue, 2: blue-green, 3: yellow, and 4: deep red). Optical and electrochemical properties of the compounds were investigated with photoelectron spectroscopy and cyclic voltammetry. The energy levels obtained from both measurements were in good agreement, and those levels were related to the electronic properties of the central core; the electron-donating carbazole compound showed the lowest ionization potential and the electron-withdrawing benzothiadiazole compound showed the largest electron affinity. Simple double layer devices were prepared with these fluorescent dyes as emitting layer and bis(2-methyl-8-quinolinolato)(4-phenylphenolato)aluminium(iii) (BAlq) as a common hole blocking layer for each color. Electroluminescence colors were the same as those of the PL spectra in each compound. These multicolor electroluminescences show that these conjugated oligomers can be candidates for solution processable light emitting materials for OLEDs as well as conjugated polymers or dendrimers.