5,5'-(Ethyne-1,2-diyl)diisophthalaldehyde (CAS 2237965-02-3) is a diphenylacetylene building block carrying four reactive aldehyde groups. Supplied by Ossila as a yellow powder with >98% purity, it serves as a linker for covalent organic frameworks (COFs) and porous organic cages.
Its aldehyde groups react readily, making it well suited to cross-linked COF networks. Condensation with cyclohexane-1,2-diamine gives [3+6] trigonal prism cages, which can convert reversibly into [6+12] truncated tetrahedron cages, changing the resulting pore size.
Combined with tri-topic amines and di-topic aldehydes, the compound also yields dumbbell-shaped macro-cages. These structures have a central triphenylacetylene core that lets each end of the dumbbell rotate freely, a feature of interest for molecular motor research.
- Synthesis of covalent organic frameworks (COFs) with cross-linked networks.
- Preparation of porous organic cages for porous materials research.
- Formation of [3+6] trigonal prism cages that can transform into [6+12] truncated tetrahedron cages with different pore sizes.
- Construction of dumbbell-shaped organic macro-cages for molecular motor studies.
| Brand | Ossila |
|---|---|
| CAS number | 2237965-02-3 |
| Molecular formula | C18H10O4 |
| Purity | >98% |
| Category | — |
| Pack sizes | 500 mg, 1 g, 5 g |
| Physical form | Yellow powder |
| Storage | — |
- Product code: B3611
- Full Name: 5,5'-(1,2-Ethynediyl)diisophthalaldehyde
- Synonyms: 5-[2-(3,5-Diformylphenyl)ethynyl]benzene-1,3-dicarbaldehyde
- Molecular Weight: 290.3 g/mol
- Melting Point: 209 °C – 211 °C
- Classification / Family: COFs, CMPs, Porous materials, Molecular motors
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