634558-40-0

Upstream product

• 629-27-6 1-Iodooctane 
• 169169-89-5 4,4'-(2,7-dibromo-9H-fluorene-9,9-diyl)diphenol 
• 108-95-2 phenol 
• 14348-75-5 2,7-dibromofluorene-9-one 
• 111-83-1 1-bromo-octane 

Downstream Products

• 1022991-40-7 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9-bis-(4-octyloxyphenyl)fluorene 
• 1272583-39-7 C₇₃H₉₆N₂O₂ 
• 1272583-37-5 C₈₁H₈₀N₂O₂ 
• 1272583-35-3 C₇₃H₇₆N₂O₂ 

Relevant academic research and scientific papers

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.

Isolation of π-conjugated system through polyfluorene from electronic coupling with side-chain substituents by cardo structures

The electronic coupling via the cardo structure in polyfluorene (PFs) was investigated. The series of fluorene units alternatively having alkoxyphenyl as an electron-donating group (EDG) and/or alkyl benzoate as an electron-withdrawing group (EWG) at the

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.

Alkoxyphenyl-substituted polyfluorene: A stable blue-light-emitting polymer with good solution processability

A new alkoxyphenyl-substituted poly(fluorene) was synthesized to suppress the emission of long-wavelength radiation. The polymer emitted pure blue light, the characteristics of which did not change upon thermal annealing or normal operation of the EL device.