740812-22-0

Basic information

• Product Name: 7,7''-dibromo-9,9,9',9',9'',9''-hexakis(2-ethylhexyl)-2,2'-7,2''-terfluorene
• Synonyms: 7,7''-dibromo-9,9,9',9',9'',9''-hexakis(2-ethylhexyl)-2,2'-7,2''-terfluorene
• CAS NO: 740812-22-0
• Molecular Weight: 1325.72
• Mol File: 740812-22-0.mol

Chemical Properties

• CAS DataBase Reference: 7,7''-dibromo-9,9,9',9',9'',9''-hexakis(2-ethylhexyl)-2,2'-7,2''-terfluorene(CAS DataBase Reference)
• NIST Chemistry Reference: 7,7''-dibromo-9,9,9',9',9'',9''-hexakis(2-ethylhexyl)-2,2'-7,2''-terfluorene(740812-22-0)
• EPA Substance Registry System: 7,7''-dibromo-9,9,9',9',9'',9''-hexakis(2-ethylhexyl)-2,2'-7,2''-terfluorene(740812-22-0)

Safety Data

• Hazardous Substances Data: 740812-22-0(Hazardous Substances Data)

Upstream product

• 6638-60-4 2-amino-7-bromofluorene 

Relevant articles and documents

Synthesis and characterization of monodisperse oligofluorenes

An efficient synthesis of 9,9-bis(2-ethylhexyl)fluorene oligomers up to the heptamer is reported, with repetitive Suzuki and Yamamoto coupling reactions employed in the synthesis. The key steps for preparation of the essential intermediates include Pd-catalyzed transformation of aryl bromides to aryl boronic esters (Miyaura reaction) and the application of the much higher reactivity of aryl boronic esters over aryl bromides in the Pd-catalyzed cross-coupling reaction with aryl diazonium salts. Variation of the UV/Vis absorption and photoluminescence characteristics with chain length is reported. Moreover, glass transition and liquid-crystal characteristics of the oligomers are described and compared with those of the polymer.