Ossila 2,2'-bithiophene (CAS 492-97-7) is a high purity thiophene intermediate supplied for organic electronics research. Chemists use it as a starting material when building small molecule or polymer semiconductors, particularly materials with a bithiophene backbone for OFETs and solar cells.
The molecule is known to occur as a mixture of cis-like and trans-like planar conformations. Its 5,5'-positions react readily, so bromination or stannylation gives 5,5'-dibromo-2,2'-bithiophene or 5,5'-trimethylstannyl-2,2'-bithiophene. These derivatives serve as partners in direct arylation reactions; for example, the dibromo compound can be prepared by treating 2,2'-bithiophene with NBS in CHCl3.
The material has a purity of >99%, a molecular weight of 166.26 g/mol and a melting point of 32 °C - 33 °C, appearing as a yellowish liquid or solid. An example 1H-NMR characterisation in CDCl3 is available, and the product comes in 5 g, 10 g, 25 g and 50 g packs.
- Precursor for the synthesis of small molecule organic semiconductors.
- Building block for polymers with a bithiophene backbone, including low band gap polymers.
- Starting material for 5,5'-dibromo- and 5,5'-trimethylstannyl-2,2'-bithiophene used in direct arylation reactions.
- Development of semiconductor materials for organic field-effect transistors (OFETs).
- Synthesis of materials for organic photovoltaics and polymer solar cells.
| Brand | Ossila |
|---|---|
| CAS number | 492-97-7 |
| Molecular formula | C8H6S2 |
| Purity | >99% |
| Category | — |
| Pack sizes | 5 g, 10 g, 25 g, 50 g |
| Physical form | Yellowish liquid/solid |
| Storage | — |
- Product code: B321
- Molecular Weight: 166.26 g/mol
- Melting Point: 32 °C - 33 °C
- Synonyms: 2,2′-Bithienyl, 2,2′-Dithienyl, 2-(2-thienyl)thiophene, 2-(thien-2-yl)thiophene
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