357339-79-8

Upstream product

• 14348-75-5 2,7-dibromofluorene-9-one 
• 603-34-9 N,N-diphenylaminobenzene 
• 486-25-9 9-fluorenone 
• 16433-88-8 2,7-dibromo-9H-fluorene 

Downstream Products

• 1393742-11-4 C₈₁H₈₂N₄ 
• 1404363-99-0 4,4'-(2,7-bis[4'-(9H-carbazol-9-yl)-2-methylbiphenyl-4-yl]-9H-fluorene-9,9-diyl)bis(N,N-diphenylaniline) 
• 1404363-95-6 4,4'-{2,7-bis[2-biphenyl-4-ylvinyl]-9H-fluorene-9,9-diyl}bis(N,N-diphenylaniline) 
• 1404363-94-5 4,4'-(2,7-dibiphenyl-4-yl-9H-fluorene-9,9-diyl)bis(N,N-diphenylaniline) 
• 1369432-56-3 2,7-bis(pyren-1-yl)-9,9-bis(4-diphenylaminophenyl)fluorene 

Relevant academic research and scientific papers

Bromine-substituted triphenylamine derivatives with improved hole-mobility for highly efficient green phosphorescent OLEDs with a low operating voltage

Charge transport materials play a crucial role in organic light-emitting diodes (OLEDs) due to their effect on reducing the operating voltage and enhancing the power efficiency. To develop hole transport materials with improved hole-mobility, two novel br

Boosting inverted perovskite solar cell performance by using 9,9-bis(4-diphenylaminophenyl)fluorene functionalized with triphenylamine as a dopant-free hole transporting material

In this study, two newly developed small molecules based on 9,9-bis(4-diphenylaminophenyl)fluorene functionalized with triphenylamine moieties, namely TPA-2,7-FLTPA-TPA and TPA-3,6-FLTPA-TPA, are designed, synthesized and characterized. The electrochemical, optical and thermal properties of both materials are investigated using various techniques. Afterwards, these materials are employed as dopant-free hole transporting materials (HTMs) in planar inverted perovskite solar cell devices with the aim of determining the device performance and studying their stability in comparison with reference N4,N4,N4′′,N4′′-tetra([1,10-biphenyl]-4-yl)-[1,1′:4′,1′′-terphenyl]-4,4′′-diamine (TaTm)-based devices. Under 1 sun conditions, TPA-3,6-FLTPA-TPA-based devices achieve a power conversion efficiency (PCE) of 13.9% whereas TPA-2,7-FLTPA-TPA-based devices exhibit the highest PCE of 17.1% mainly due to an improvement in the fill factor (FF). Meanwhile, the devices prepared using TaTm as the reference HTM exhibit an overall efficiency of 15.9%. In addition to the higher efficiency, our newly developed HTM TPA-2,7-FLTPA-TPA-based devices demonstrate good stability which is comparable to those with TaTm under similar aging test conditions.

Synthesis and photophysical properties of two-photon absorbing spirofluorene derivatives

New spirofluorene-based quadrupolar two-photon absorbing dyes having triphenylamine and N,Ndibutylaniline as electron donors at the end of molcules were designed and synthesized. The thirdorder nonlinear optical properties of these compounds were studied using a two-photon excited fluorescence method. They were found to have high two-photon absorption cross-section owing to extended conjugation of the spirofluorene moiety. The effect of varying the donor strength could be discerned by comparing the two compounds. They were successfully used as a photosensitizers for two-photon initiated polymerization of three-dimensional micro-objects. Copyright

Synthesis, properties and applications of biphenyl functionalized 9,9-bis(4-diphenylaminophenyl)fluorenes as bifunctional materials for organic electroluminescent devices

Four new bifunctional materials, namely BPTF, CBPTF, CMBPTF and BPVTF, having 9,9-bis(4-diphenylaminophenyl)fluorene as a molecular platform and biphenyl derivatives as end-capping substituents were synthesized and characterized. Their optimized structure

Blue light-emitting and hole-transporting materials based on 9,9-bis(4-diphenylaminophenyl)fluorenes for efficient electroluminescent devices

New bifunctional materials namely BTTF, TPTF and BPTF having 9,9-bis(4-diphenylaminophenyl)fluorene as a molecular platform were synthesized and characterized. These molecules showed strong blue emission in both solution and solid state with a solution fl

Arylamino-functionalized fluorene- and carbazole-based copolymers: Color-tuning their CdTe nanocrystal composites from red to white

Four alternating arylamino-functionalized copolymers were synthesized in a Suzuki copolymerization applying 4, 4′-(2,7-dibromo-9H-fluorene-9,9-diyl) dianiline, 4,4′-(2,7-dibromo-9H-fluorene-9,9-diyl)bis(N,N-diphenylaniline) , 4-(3,6-dibromo-9H- carbazol-9

Polyfluorene-based push-pull type functional materials for write-once-read-many-times memory devices

A highly soluble polyfluorene-based copolymer containing electron-rich triphenylamine (TPA) and electron-poor 9,9-bis(3,4-bis(3,4-dicyanophenoxy)phenyl side chains in the C-9 position of the fluorene unit was synthesized under Yamamoto conditions. By appl