686342-56-3

Upstream product

• 50890-67-0 4,5-Diazafluoren-9-one 
• 100-66-3 methoxybenzene 

Downstream Products

• 1228152-31-5 9,9-bis(4-methoxyphenyl)-4,5-diazafluoren-4,5-dioxide 
• 1015446-32-8 [Ir(1-(4,6-difluorophenyl)-pyrazolato-C₂,N)2(9,9-bis(4-methoxyphenyl)-4,5-diazafluorene)]hexafluorophosphate 

Relevant academic research and scientific papers

Synthesis and properties of 9,9′-diaryl-4,5-diazafluorenes. A new type of electron-transporting and hole-blocking material in EL device

The title compounds were prepared and investigated for electron- transporting and hole-blocking materials in organic electroluminescent (EL) devices. EL efficiencies of the phosphorescent devices indicated high performance of hole-blocking ability in the compounds. A maximum external efficiency of 18% was achieved and a maximum power luminous efficiency was over 45 Lm W-1.

9,9-diaryl-4,5-diazafluorene-based cardo polymer; Synthesis and characteristic properties

To open out new aspects of 9,9-diarylfluorene (DAF)-based polymers with high performances, 9,9-(4-hydroxyphenyl)-4,5-diazafluorene (N-BPF) was designed as a new cardo structure and the properties of poly(ether ketone)s (N-PEKs) containing N-BPF skeletons were examined in detail. N-PEKs were synthesized in high yields via polycondensation of N-BPF with difluoroarenes. N-PEKs showed cardo polymer-specific properties such as high thermal stability and high solubility in organic solvents. The addition of p-toluenesulfonic acid (TsOH) to N-PEK resulted in the formation of network polymer based on interchain hydrogen bonds. It turned out that the films of network polymer are flexible and transparent and exhibit high refractive index and low birefringence. The effects of feed ratio of TsOH to N-PEK were also evaluated on the mechanical properties of network polymer.

ORGANIC COMPOUND AND ORGANIC LIGHT-EMITTING ELEMENT HAVING THE SAME

PROBLEM TO BE SOLVED: To provide a compound which has an electron-donating property and is stable in the atmosphere. SOLUTION: The organic compound is represented by general formula [1] (where n represents an integer from 0 to 2 inclusive; R's each represent an aryl group or an alkyl group; R's may be the same or different; and the aryl group and the alkyl group each have at least one electron-withdrawing substituent selected from a fluorine atom, a trifluoromethyl group, a cyano group, and a nitro group, or one substituent having the electron-withdrawing substituent). SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT

DIAZAFLUORENE COMPOUND

The present invention provides a novel diazafluorene compound for manufacturing a 4,5-diazafluorene derivative. The diazafluorene compound is represented by the general formula (1): wherein R1 and R2 each represent a hydrogen atom, a