136296-63-4

Basic information

• Product Name: Methanone, (2,5-dibromo-1,4-phenylene)bis[(4-decylphenyl)-
• CAS NO: 136296-63-4
• Molecular Formula: C40H52Br2O2
• Molecular Weight: 724.66
• Mol File: 136296-63-4.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: Methanone, (2,5-dibromo-1,4-phenylene)bis[(4-decylphenyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: Methanone, (2,5-dibromo-1,4-phenylene)bis[(4-decylphenyl)-(136296-63-4)
• EPA Substance Registry System: Methanone, (2,5-dibromo-1,4-phenylene)bis[(4-decylphenyl)-(136296-63-4)

Safety Data

• Hazardous Substances Data: 136296-63-4(Hazardous Substances Data)

Upstream product

• 1074-24-4 2,5-dibromo-p-xylene 
• 106-42-3 para-xylene 
• 104-72-3 decylbenzene 
• 13815-90-2 3,6-dibromo-2,5-phenylenedi(carboxylic acid chloride) 
• 13731-82-3 2,5-dibromoterephtalic acid 

Relevant articles and documents

Tuning J-aggregate Formation and Emission Efficiency in Cationic Diazapentacenium Dyes

Enhancement of the luminescence efficiency of two new diazapentacenium salts (D1 and D2) of more than 55 for D1 and 22 times for D2) in poor solvents, acetonitrile and/or dichloromethane, was observed and rationalized as formation of emissive J-aggregates. Both compounds displaying 4-n-decylphenyl substituents at the 7,14-carbons and phenyl (D1) or 2,6-difluorophenyl (D2) substituents at the quaternary nitrogen atoms in 5,12-positions have been synthetized in a two-step procedure involving a two-fold Buchwald-Hartwig-type CN cross-coupling and an electrophilic Friedel-Crafts-type cyclization. The optical properties of the dicationic diazapentacenium salts in various solvents and in thin films have been investigated by steady-state and time-resolved absorption and photoluminescence spectroscopies. In thin films and in good solvents, isolated molecules coexist with aggregates. Nonetheless, D1 is seven times more emissive than D2, reflecting a higher J-aggregate contribution in the former.

Synthesis and properties of an acetal-bridged ladder poly(p-phenylene)

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