2,6-Dibromonaphthalene-1,4,5,8-tetracarboxylic dianhydride (NTCDA-2Br, CAS 83204-68-6) from Ossila is a brominated naphthalene monomer supplied at >98% purity (GC). It serves as a starting material for naphthalene diimides (NDIs), n-type semiconducting polymers and dyes used in polymer solar cells, organic field-effect transistors (OFETs) and bioimaging.
The molecule is symmetric, with an anhydride ring formed by neighbouring carboxylic acid groups at each end. Its flat, conjugated aromatic core supports good charge transport, and naphthalene dianhydride and NDI-based materials are known for a strong mix of redox, electrical, optical and thermal properties together with high resistance to moisture and oxygen.
Bromide groups at the 2 and 6 positions make the compound easy to use in coupling reactions for building larger structures. Used directly, it can also act as a cathode interlayer that helps extract electrons efficiently. It is a pale yellow to yellow powder with a melting point of 350 °C.
- Synthesis of naphthalene diimide (NDI) materials for the active layer of organic solar cells.
- Preparation of n-type semiconducting polymers for organic field-effect transistors.
- Building block for dyes used in bioimaging applications.
- Cathode interlayer material for efficient electron extraction in organic devices.
- Coupling reactions toward OLED and organic photovoltaic materials.
| Brand | Ossila |
|---|---|
| CAS number | 83204-68-6 |
| Molecular formula | C14H2Br2O6 |
| Purity | >98% (GC) |
| Category | — |
| Pack sizes | 1 g, 5 g, 10 g |
| Physical form | Pale yellow to yellow powder |
| Storage | — |
- Product code: B3211
- Molecular Weight: 425.97 g/mol
- Synonyms: 4,9-Dibromoisochromeno[6,5,4-def]isochromene1,3,6,8-tetraone, NTCDA-2Br
- Classification / Family: Naphthalenes, Monomers, Electron transport layer materials
- Melting Point: 350 °C
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