23610-15-3

Upstream product

• 4399-08-0 1,1,1-tribromo-2,2-bis-(4-chloro-phenyl)-ethane 
• 80-06-8 chlorfenethol 
• 108-90-7 chlorobenzene 
• 90-98-2 4,4'-Dichlorobenzophenone 
• 106-39-8 bromochlorobenzene 
• 623-03-0 4-Cyanochlorobenzene 
• 558-13-4 carbon tetrabromide 

Downstream Products

• 307354-61-6 C₄₂H₂₄Br₂Cl₆ 

Relevant academic research and scientific papers

Benzophenanthrene derivative and application thereof

The invention relates to a benzophenanthrene derivative and application thereof. The structural formula of the benzophenanthrene derivative is shown as a formula (I). The benzophenanthrene derivativeis a novel organic electroluminescent compound with a fused ring structure of indole, benzofuran and benzothienobenzophenanthrene, the intramolecular electron density is increased on the basis of benzophenanthrene, meanwhile, substituent groups are adjusted to increase the molecular steric hindrance, the pi-pi interaction between molecules is weakened, the internal quantum efficiency of moleculesis improved, and a shorter emission wavelength than conventional compounds is achieved. Meanwhile, the benzophenanthrene derivative hinders the generation of an organic intermolecular excitation-excitation compound and increases the internal electron density and stability, so that the effect and the service life of the organic electroluminescent device prepared from the benzophenanthrene derivative are obviously improved and prolonged.

Spiro biimidazole molecule as well as preparation method and application thereof

The invention discloses a preparation method and application of a spiro biimidazole molecule and a relevant derivative. Diphenyl ketone or a derivative thereof is taken as a raw material, and a corresponding dibromo aromatic ring olefin product is prepared by Corey-Fuchs reaction; then the product and o-formaldehyde phenylboronic acid generate Suzuki reaction to obtain geminal-ortho aldehyde substituted tetraryl ethylene; then the geminal-ortho aldehyde substituted tetraryl ethylene generates Leuckart reaction with benzil or a derivative thereof in acetic acid and ammonium acetate to obtain geminal-ortho tetraphenyl ethylene-triphenyl imidazole; finally, under the oxidation of K3Fe(CN)6/KOH, the spiro biimidazole molecule is obtained by free radical cyclization addition. The molecule shows phosphorescence emitting behavior with longer service life (1.6 seconds) under low temperature (77K). The 3D spiro molecule may provide guidance for preparing a long-service-life room temperature phosphorescence small organic molecule material.