4,4',4''-(Benzene-1,3,5-triyltris(ethyne-2,1-diyl))trianiline, known as TETAB, is a star-shaped amine building block for covalent organic frameworks (COFs). Its central benzene ring carries three 4-ethynylaniline arms at the 1,3,5-positions, giving a rigid trigonal linker suited to cross-linked framework networks. It is supplied as a dark yellow powder or crystals with a purity above 98%.
The terminal amine groups take part readily in polycondensation, forming imine or amide linkages. Researchers have used TETAB to build COFs for light-driven reduction of O2 and CO2. Condensing it with 2,2'-bipyridine-5,5'-dicarbaldehyde produces the imine-linked OMHS-COF-Co, a photocatalyst reported to convert CO2 to CO at up to 15 874 µmol g−1 h−1 with 92.4% selectivity and strong cycling stability.
Reaction with 1,3,5-triformylphloroglucinol gives the one-dimensional TP–TTA–COF, featuring stable β-ketoenamine linkages and many alkynyl groups. Coordinating platinum from H2PtCl6·6H2O to this framework yields PtCl-COF, a photocatalyst for enhanced hydrogen peroxide production.
- Synthesis of imine- or amide-linked covalent organic frameworks as a rigid trigonal linker.
- Construction of COF photocatalysts for the photochemical reduction of CO2 to CO.
- Preparation of framework photocatalysts for oxygen reduction and hydrogen peroxide production.
- Building alkynyl-rich COF supports for anchoring single metal sites such as platinum.
| Brand | Ossila |
|---|---|
| CAS number | 326002-91-9 |
| Molecular formula | C30H21N3 |
| Purity | > 98% |
| Category | — |
| Pack sizes | 1 g, 500 mg |
| Physical form | Dark yellow powder/crystals |
| Storage | — |
- Product code: B4541
- Molecular Weight: 423.51 g/mol
- Synonyms: TETAB, 4,4',4''-(1,3,5-benzenetriyltri-2,1-ethynediyl)tris-Benzenamine
- Classification / Family: Triethynylbenzene, Anilines, COF ligand
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