4,4'-Diethynyl-1,1'-biphenyl (DEBP, CAS 38215-38-2) from Ossila is a rigid, linear biphenyl building block carrying an ethynyl group at each end. The terminal alkynes extend the conjugation of the biphenyl core and make the molecule a convenient linker for cross-linked covalent organic frameworks (COFs) and porous organic polymers. It is supplied at >97% purity and reacts readily in click chemistry and Sonogashira coupling.
Reported work shows how versatile the linker is. Combined with tris(4-bromo-2,3,5,6-tetramethylphenyl)boron nodes, it forms DEBP-BMOP, a Lewis acidic microporous polymer with 1.08 nm pores that gives a selective turn-on blue emission for fluoride ions in aqueous mixtures, with a detection limit of 2.6 μM. Coupled by Sonogashira reaction with Co or Mn tetrakis(p-bromophenyl)porphyrin complexes, it yields porous metalloporphyrin polymers that catalyse the cycloaddition of CO2 to epoxides, giving cyclocarbonates in 90% yield.
The compound appears as a white to light yellow to orange powder or crystals with a melting point of 168 °C.
- Linker for constructing cross-linked covalent organic frameworks and conjugated porous networks.
- Building block for luminescent microporous polymers used in selective sensing and capture of fluoride ions.
- Monomer for porous metalloporphyrin polymers that catalyse CO2 cycloaddition to epoxides.
- Substrate for click reactions and Sonogashira cross-coupling in polymer synthesis.
- Component of macrocycle-based polymers studied for palladium capture from acidic solution.
| Brand | Ossila |
|---|---|
| CAS number | 38215-38-2 |
| Molecular formula | C16H10 |
| Purity | >97% |
| Category | — |
| Pack sizes | 250 mg, 500 mg, 1 g |
| Physical form | White to light yellow to orange powder/crystals |
| Storage | — |
- Product code: B3841
- Molecular Weight: 202.26 g/mol
- Synonyms: DEBP - 4,4'-Diethynylbiphenyl
- Classification / Family: Phenylacetylene COF ligands
- Melting Point: 168 °C
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