2-Bromodibenzothiophene (CAS 22439-61-8), also known as 2-Bromodibenzo[b,d]thiophene, is a dibenzothiophene carrying a single bromine atom at the 2-position. Researchers use it as a starting intermediate for building larger organic semiconductor molecules and oligomers for light-emitting diodes, field-effect transistors and photovoltaic devices.
The bromide substituent makes the compound a convenient handle for further coupling reactions. Published work shows it as a precursor to host materials such as DB2tCz, prepared with 3,6-bis(carbazol-9-yl)-9H-carbazole, which combined a Tg of 185 °C with a triplet energy of 2.93 eV; blue PhOLEDs using DB2tCz with FIrPic reached 20.0% external quantum efficiency. Related dibenzothiophene-based structures such as DSTPA have served as green fluorescent emitters and hosts for red phosphors.
The material is supplied as a white to off-white powder or crystals with a purity above 98% by 1H NMR, a molecular weight of 263.15 g/mol and a melting point of 250-252 °C. Pack sizes of 25 g, 50 g and 100 g are offered.
- Intermediate for synthesising organic semiconductor molecules and oligomers.
- Building block for host and emitter materials in OLEDs, including blue phosphorescent devices.
- Synthesis of materials for organic field-effect transistors (OFETs).
- Preparation of materials for organic photovoltaic devices.
- Precursor in research on low band gap polymers.
| Brand | Ossila |
|---|---|
| CAS number | 22439-61-8 |
| Molecular formula | C12H7BrS |
| Purity | >98% (1H NMR) |
| Category | — |
| Pack sizes | 25 g, 50 g, 100 g |
| Physical form | White to off-white powder/crystals |
| Storage | — |
- Product code: B1221
- Molecular Weight: 263.15 g/mol
- Synonyms: 2-Bromodibenzo[b,d]thiophene
- Melting Point: Tm = 250-252 °C
- Classification / Family: Dibenzothiophene, Semiconductor synthesis intermediates, Low band gap polymers, OLED, OFETs, organic photovoltaics
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