2-Dodecylthiophene (CAS 4861-61-4, C16H28S) is an alkylated thiophene carrying a C12H25 dodecyl side chain. It serves as an intermediate for building semiconducting polymers and small molecules used in organic field-effect transistors (OFETs), polymer solar cells, OLEDs and organic photovoltaics.
The dodecyl substituent improves solubility, and the molecule tends to aggregate and self-aggregate, which helps produce orderly packed molecules in films. One example is PTVTTT2T, a copolymer whose backbone combines thieno[3,2-b]thiophene bearing 2-dodecylthiophene side chains (TT2T) with thienylene-vinylene-thienylene (TVT). Its coplanar backbone and suitable side chain length gave nanofiber thin films with good packing, an average field-effect mobility of 0.64 cm2 V-1 s-1 and an on/off ratio above 10^7 in ambient conditions for over three months.
Ossila supplies this material at >98% purity (1H NMR) as a light yellow to orange liquid with a molecular weight of 252.46 g/mol.
- Intermediate for synthesising semiconducting polymers for organic field-effect transistors.
- Building block for small-molecule and polymer materials in polymer solar cells and organic photovoltaics.
- Thiophene building block for the synthesis of OLED materials.
- Introducing dodecyl side chains to improve solubility and thin-film morphology of conjugated materials.
- Synthesis of low band gap polymers.
| Brand | Ossila |
|---|---|
| CAS number | 4861-61-4 |
| Molecular formula | C16H28S |
| Purity | >98% (1H NMR) |
| Category | — |
| Pack sizes | 5 g, 10 g, 25 g, 50 g |
| Physical form | Light yellow to orange liquid |
| Storage | — |
- Product code: B1261
- Molecular Weight: 252.46 g/mol
- Boiling Point: 155 °C at 2 mmHg
- Relative Density: 0.91
- Classification / Family: Thiophene, Semiconductor synthesis intermediates, Low band gap polymers, OLED, OFETs, organic photovoltaics
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