5,5'-bis(trimethylstannyl)-2,2'-bithiophene (CAS 143367-56-0) is a bithiophene building block end-capped with trimethyltin groups. Supplied at >98% purity as white flakes, it serves as a monomer for making small molecules and semiconducting polymers used in OFETs, OLEDs, PLEDs and organic photovoltaics.
The compound is derived from 2,2'-bithiophene, an electron-rich donor unit when incorporated into low band-gap polymer semiconductors. Its trimethylstannyl end groups make it suited to Stille coupling polymerization. For example, coupling it with 4,9-dibromo-2,7-bis(2-octyldodecyl)-benzo[3,8]phenanthroline-1,3,6,8(2H,7H)-tetrone gives PNDI2OD-T2, a heavily n-dopable π-conjugated redox polymer.
Ossila has also used this monomer in its own laboratory to prepare PDPP4T and the n-type polymer DPPDPyBT. Available in 1 g and 5 g pack sizes.
- Synthesis of semiconducting polymers and small molecules for organic field-effect transistors (OFETs).
- Preparation of active materials for OLED and PLED devices.
- Building low band-gap donor polymers for organic photovoltaics and polymer solar cells.
- Stille coupling polymerization to produce PNDI2OD-T2.
- Monomer for the synthesis of PDPP4T and n-type DPPDPyBT.
| Brand | Ossila |
|---|---|
| CAS number | 143367-56-0 |
| Molecular formula | C14H22S2Sn2 |
| Purity | >98% |
| Category | — |
| Pack sizes | 1 g, 5 g |
| Physical form | White flakes |
| Storage | — |
- Product code: B221
- Molecular Weight: 491.87 g/mol
- Melting Point: 96 °C - 100 °C
- Synonyms: 5,5-Ditrimethylstannyl-2,2'-bithiophene; 5,5'-Bis(trimethyltin)-2,2'-bithiophene
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