1,2,4,5-Tetrakis(4-formylphenyl)benzene (TFPB, CAS 883835-33-4) is an aldehyde-functional terphenyl ligand used to build covalent organic frameworks (COFs). Its cross-shaped structure carries four 4-formylphenyl groups on a central benzene ring at the 1,2,4,5-positions, making it a reactive linker for cross-linked COF networks. It is supplied with >98% purity as a white or off-white powder or crystals.
Published work shows its versatility. Condensed with 2,5-diaminobenzene-1,4-dithiol (DABDT), it forms the thiol-decorated SH-COF-2, with a surface area of 227 m2 g−1, a capacitance of 118 mF cm−2 and >95% capacitance retention after 1000 cycles. Paired with PyTTA nodes, it gives the highly conjugated 2D framework TFPB-PyTTA-COF, which is chemically and physically stable and takes up iodine at up to 5.6 g g−1.
Combined with TPE-NH2 through a [4 + 2] route, TFPB yields COF-TPE-TPB-B, whose dangling formyl groups improve hydrophilicity and charge separation for photocatalytic hydrogen evolution.
- Synthesis of imine-linked covalent organic frameworks as a tetra-aldehyde linker.
- Preparation of iodine-adsorbing COFs such as TFPB-PyTTA-COF.
- Construction of COFs for photocatalytic hydrogen evolution (PHE).
- Development of thiol-decorated COF electrodes for high-performance supercapacitors.
- Fabrication of COF supports for heterogeneous catalysis.
| Brand | Ossila |
|---|---|
| CAS number | 883835-33-4 |
| Molecular formula | C34H22O4 |
| Purity | >98% |
| Category | — |
| Pack sizes | 1 g, 5 g |
| Physical form | White or off-white powder/crystals |
| Storage | — |
- Product code: B3771
- Molecular Weight: 494.54 g/mol
- Synonyms: TFPB, 4-[2,4,5-Tris(4-formylphenyl)phenyl]benzaldehyde
- Classification / Family: Terphenyl, COF ligands
- Melting Point: 152°C ~ 156 °C
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