4-Bromo-N-(4-bromophenyl)-N-(4-sec-butylphenyl)aniline (CAS 287976-94-7) is a triphenylamine-based building block for chemists making hole transporting semiconductors. Its structure carries two bromo groups that act as reactive handles for coupling chemistry, plus a single sec-butyl group that improves solubility of the final materials.
The compound is a common starting point for hole transporting small molecules and polymers used in light-emitting diodes and perovskite solar cells. A well-known example is TFB, poly(9,9-dioctylfluorene-alt-N-(4-sec-butylphenyl)-diphenylamine), which is made by Suzuki coupling polymerization of this intermediate with 2,2'-(9,9-dioctyl-9H-fluorene-2,7-diyl)bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane). TFB is widely applied as a hole transport layer in organic electronic devices.
The material is supplied as a white to light yellow powder or crystals with a purity of >98% determined by 1H NMR, in 1 g, 2 g and 5 g packs.
- Synthesis of hole transporting semiconducting small molecules.
- Preparation of hole transporting conjugated polymers via Suzuki coupling polymerization.
- Synthesis of the hole transport polymer TFB for organic electronic devices.
- Development of hole transport layers for organic light-emitting diodes.
- Research on hole transport materials for perovskite solar cells.
| Brand | Ossila |
|---|---|
| CAS number | 287976-94-7 |
| Molecular formula | C22H21Br2N |
| Purity | >98% (1H NMR) |
| Category | — |
| Pack sizes | 1 g, 2 g, 5 g |
| Physical form | White to light yellow powder/crystals |
| Storage | — |
- Product code: B2191
- Molecular Weight: 459.22 g/mol
- Synonyms: N,N-Bis(4-bromophenyl)-N-(4-sec-butylphenyl)amine; 4-sec-Butyl-N,N-bis(4-bromophenyl)aniline
- Classification / Family: Triphenylamine derivatives, Semiconductor synthesis intermediates, Hole transport layer, Perovskite solar cells
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