1228595-55-8

Basic information

• Product Name: 2,7-dibromo-9-[4-(4,4'-dimethyldiphenylamino)phenyl]fluoren-9-ol
• Synonyms: 2,7-dibromo-9-[4-(4,4'-dimethyldiphenylamino)phenyl]fluoren-9-ol
• CAS NO: 1228595-55-8
• Molecular Weight: 611.376
• Mol File: 1228595-55-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2,7-dibromo-9-[4-(4,4'-dimethyldiphenylamino)phenyl]fluoren-9-ol(CAS DataBase Reference)
• NIST Chemistry Reference: 2,7-dibromo-9-[4-(4,4'-dimethyldiphenylamino)phenyl]fluoren-9-ol(1228595-55-8)
• EPA Substance Registry System: 2,7-dibromo-9-[4-(4,4'-dimethyldiphenylamino)phenyl]fluoren-9-ol(1228595-55-8)

Safety Data

• Hazardous Substances Data: 1228595-55-8(Hazardous Substances Data)

Upstream product

• 14348-75-5 2,7-dibromofluorene-9-one 
• 58047-42-0 4-bromo-N,N-di-p-tolylaniline 

Downstream Products

• 1228595-57-0 C₁₄₉H₁₈₇NO 

Relevant articles and documents

3D monodisperse oligofluorenes with non-conjugated triphenylamine-based cores: Synthesis and optoelectronic properties

Two 3D monodisperse oligofluorenes with non-conjugated triphenylamine-based cores have been synthesized by Friedel-Crafts copolycondensation reaction. The oligomers, PF3-TPA and PF3-TPA3, consist of three fluorene pentamer arms that are connected non-conjugately through a triphenylamine (TPA) and 1,3,5-tris(triphenylammo)benzene core (TPA 3), respectively, at the 9-position of the central fluorene of the pentafluorene arms. The coplanar structures of the cores and the linkages at the centre of the pentafluorene arms produced a 3D structure of oligomers. This specific structure efficiently retarded the crystallization tendencies of the pentafluorene arms and gave the materials completely amorphous morphological structures. Both oligomers emit deep-blue fluorescence with high efficiencies in thin films (Φpl-film = 67% for PF3-TPA3 and 86% for PF3-TPA). The introduction of triphenylamine units into the core promoted the hole-injection ability while not obviously scarificing the electron-injection ability of the oligomers. The multi-layer devices ITO/PBDOT-PSS/PF3-TPA3 and PF3-TPA/TPBI/LiF/Al were fabricated to investigate the electroluminescence (EL) properties of the two oligomers. Both oligomers showed a low turn-on voltage of 4 V. The luminances reached 1946 cd/m2 at 7.5 V in the PF3-TPA 3 device and 1055 cd/m2 at 8 V in the PF3-TPA device. The EL efficiencies at this luminance were 1.63 and 1.57 cd/A, respectively.