9,9-Dioctyl-2,7-dibromofluorene (CAS 198964-46-4) from Ossila is a dibrominated fluorene monomer, supplied at 98% purity, used as a building block for semiconducting polymers. Its two bromine positions allow it to take part in either Suzuki or Stille cross-coupling to build conjugated polymer chains.
Polyfluorenes carrying alkyl side chains are widely studied conjugated polymers, valued particularly for displays thanks to their efficient, pure blue electroluminescence, high charge-carrier mobility and good processability. Their planar backbone maximises pi-conjugation, and the resulting materials serve in light-emitting diodes, organic photovoltaics and interface layers for organic electronics.
A typical route couples this monomer with 9,9-Dioctylfluorene-2,7-diboronic acid bis(pinacol) ester in toluene, using Et4NOH as base and Pd(OAc)2/(o-tolyl)3P as catalyst, to give PFO (F8) via Suzuki coupling. The material appears as light brown to white crystals or powder with a melting point of 59 °C - 63 °C, and is characterised by 1H-NMR in CDCl3.
- Synthesis of polyfluorene semiconductors through Suzuki or Stille coupling reactions.
- Preparation of PFO (F8) by Suzuki coupling with 9,9-Dioctylfluorene-2,7-diboronic acid bis(pinacol) ester.
- Development of blue-emitting polymers for polymer light-emitting diodes and displays.
- Research on conjugated polymers for organic photovoltaics and polymer solar cells.
- Materials for OFETs and interface layers in organic electronics.
| Brand | Ossila |
|---|---|
| CAS number | 198964-46-4 |
| Molecular formula | C29H40Br2 |
| Purity | 98% |
| Category | — |
| Pack sizes | 10 g |
| Physical form | Light Brown/White Crystals/Powder |
| Storage | — |
- Product code: B331
- Molecular Weight: 548.44 g/mol
- Melting Point: 59 °C - 63 °C
- Synonyms: 2,7-Dibromo-9,9-dioctyl-9H-fluorene; 2,7-Dibromo-9,9-dioctylfluorene; 2,7-Dibromo-9,9-di-n-octylfluorene
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