AB-TFMB (CAS 1449757-11-2) is a fluorinated biphenyl diamine monomer supplied as a white powder or crystal with purity above 99%. Its structure consists of a trifluoromethyl-substituted biphenyl core joined by two carboxamide links to two aniline end groups, making it a useful building block for polyimide synthesis.
Polyimides prepared from AB-TFMB combine high optical transparency with a low linear coefficient of thermal expansion (CTE), a pairing that suits flexible display substrates. The trifluoromethyl groups suppress intermolecular charge transfer, which keeps the polymer clear, while the rigid, linear backbone of the monomer holds the CTE down to 4.2 ppm/K.
These polyimides also allow gas to pass through, reaching O2 transmission rates of up to 2313 cm3/m2/day at 23 °C and 1.01 bar. Beyond high-performance polymers, the multiple functional groups of AB-TFMB make it a practical fluorinated diamine for work on polyamides, covalent organic frameworks (COFs) and drug discovery.
- Monomer for synthesising transparent polyimides with low thermal expansion.
- Polymer substrates for flexible displays.
- Gas permeable polyimide membranes.
- Building block for polyamides and covalent organic frameworks (COFs).
- Fluorinated diamine intermediate for drug discovery.
| Brand | Ossila |
|---|---|
| CAS number | 1449757-11-2 |
| Molecular formula | C28H20F6N4O2 |
| Purity | >99% |
| Category | — |
| Pack sizes | 2 g, 5 g, 10 g |
| Physical form | White powder/crystal |
| Storage | — |
- Product code: B2181
- Full Name: N,N'-(2,2'-bis(trifluoromethyl)-[1,1'-biphenyl]-4,4'-diyl)bis(4-aminobenzamide)
- Molecular Weight: 558.47 g/mol
- Classification / Family: Fluorinated building block, Diamine building block, High performance polymers, Displays, Membranes
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