Pyrene-4,5,9,10-tetraone (PTO, CAS 14727-71-0) from Ossila is a bridging ligand containing two 1,2-diketone units, supplied at >98% purity as a yellow to orange powder, flakes or crystals. Structurally it is an oxidized pyrene in which a six-membered cyclic 1,2-diketone sits on each bay region of the biphenyl core, making it a widely used building block for covalent organic frameworks (COFs) and an electrode material for lithium or sodium ion batteries, as cathode or anode.
When paired with carbon nanomaterials such as graphene or carbon nanotubes, PTO offers high theoretical specific capacity, a high redox potential and efficient use of active sites. These benefits can be achieved through polymerisation, immobilisation on carbon, conversion into salts by changing polarity, and electrolyte optimisation. Its diketone groups also undergo amination reactions readily, supporting cross-linked COF networks.
Reported results include PPTO–CNT composite electrodes with a discharge capacity of 360.2 mAh g −1 and 95.1% capacity retention after 1300 cycles, and a PTO-based COF with 50 wt % CNT (PT-COF50) reaching 280 mAh g –1 at 200 mA g –1.
- Linker for synthesising covalent organic frameworks (COFs) and cross-linked COF networks.
- Cathode material research for lithium ion batteries.
- Electrode material studies for sodium ion batteries.
- Monomer for poly(pyrene-4,5,9,10-tetraone) and its carbon nanotube composites.
- Anode material development using donor–acceptor polymers based on PTO.
| Brand | Ossila |
|---|---|
| CAS number | 14727-71-0 |
| Molecular formula | C16H6O4 |
| Purity | >98% |
| Category | — |
| Pack sizes | 250 mg, 500 mg, 1 g, 5 g |
| Physical form | Yellow to orange powder to flakes/crystals |
| Storage | — |
- Product code: B3721
- Molecular Weight: 262.22 g/mol
- Synonyms: PTO, PYT, 4,5,9,10-Pyrenetetrone
- Classification / Family: Pyrenes, COF ligands, Battery materials, Cathode materials
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