2,7-Dibromocarbazole (2,7-dibromo-9H-carbazole, CAS 136630-39-2) from Ossila is a halogenated carbazole monomer supplied at >99% purity as an off-white powder. It serves as a starting material for carbazole-series small molecules and carbazole back-boned polymers used in OFETs, OLEDs, PLEDs and OPVs.
Carbazole-based materials, including poly(2,7-carbazole)s, are widely chosen for organic electronics because they donate electrons well and offer better chemical stability than fluorene units. The bromide groups at the 2 and 7 positions make the molecule suited to straightforward coupling reactions, while the 9-position can be functionalised with aromatic or alkyl chains to improve solubility, control film morphology or tune energy levels.
A well-known polymer made from this building block is PCDTBT, a semiconductor used in polymer solar cells. The compound is also used to prepare 2,7-dibromo-9-heptadecanylcarbazole, an example of adjusting solubility through substitution at the 9-position.
- Synthesis of carbazole-based small molecules and polymers for OLEDs and PLEDs.
- Preparation of donor polymers such as PCDTBT for polymer solar cells.
- Building block for semiconducting materials used in OFETs.
- Intermediate in the synthesis of low band gap polymers for organic photovoltaics.
- Starting material for 9-substituted derivatives such as 2,7-dibromo-9-heptadecanylcarbazole.
| Brand | Ossila |
|---|---|
| CAS number | 136630-39-2 |
| Molecular formula | C12H7Br2N |
| Purity | >99% |
| Category | — |
| Pack sizes | 5 g, 10 g, 25 g, 50 g |
| Physical form | Off-white powder |
| Storage | — |
- Product code: B251
- Molecular Weight: 325.0 g/mol
- Synonyms: 2,7-Dibromo-9H-carbazole
- Melting Point: 226 °C - 230 °C
- Classification / Family: Monomers, Building blocks, Carbazoles, Halogenated heterocycles, Intermediates for semiconducting polymers
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