2,5-Bis(octyloxy)terephthalaldehyde (CAS 123440-34-6), also known as C8PDA, is a benzene-based building block carrying two aldehyde groups and two n-octyloxy chains. Supplied as a bright yellow powder with purity above 98%, it serves as a dialdehyde linker for covalent organic frameworks (COFs) and as a monomer for organic semiconductors.
Its aldehyde groups react readily with amines such as triaminophenylbenzene through imine formation, giving porous COFs. One such framework showed a BET surface area of 1202 m2/g and has been used in memristors with an on/off ratio of an order of magnitude.
The compound is also an intermediate for vinylene-bridged macromolecules, whose extended π-conjugation improves charge carrier mobility in organic semiconductors. A fully conjugated polyimine built from it reached a power conversion efficiency of 0.17% in a preliminary photovoltaic study.
- Synthesis of imine-linked covalent organic frameworks with amine derivatives such as triaminophenylbenzene.
- Preparation of porous COF layers for resistive switching memory devices (memristors).
- Synthesis of vinylene-bridged conjugated macromolecules for organic semiconductors.
- Preparation of conjugated polyimines for photovoltaic research.
- Building block for cross-linked COF and MOF networks.
| Brand | Ossila |
|---|---|
| CAS number | 123440-34-6 |
| Molecular formula | C24H38O4 |
| Purity | > 98% |
| Category | — |
| Pack sizes | 500 mg, 1 g |
| Physical form | Bright yellow powder |
| Storage | — |
- Product code: B4041
- Molecular Weight: 390.56 g/mol
- Synonyms: 2,5-dioctyloxybenzene-1,4-dicarbaldehyde, C8PDA
- Classification: Carbaldehyde monomers, Alkylated monomers, COFs, Porous organic frameworks
- Melting Point: 76 – 79 °C
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