1,3,5-Tris(3-fluoro-4-formylphenyl)benzene (TFFPB, CAS 2088007-04-7) is a trigonal, fluorinated aldehyde linker used to build covalent organic frameworks (COFs). Its benzene core carries three 3-fluoro-4-formylphenyl arms at the meta positions. The aldehyde groups form covalent bonds that extend the molecule into a framework, and the fluorine atoms raise the fluorine content of the final material.
Reacting TFFPB with 1,3,5-tris(4-aminophenyl)benzene (TPB) at room temperature gives TPTF-COF, a porous, fluorine-rich framework. It is highly crystalline, thermally stable and has a specific surface area of 1084.61 m2·g−1. When TFFPB nodes are joined through acrylonitrile linkages, the resulting COF responds quickly to pH changes in both absorption and fluorescence. Compared with its nonfluorinated counterpart, it shows a 20% higher fluorescence quantum yield and faster response under acid–base induction.
Ossila supplies TFFPB at >98% purity as a white to yellow to orange powder or crystals. Its fluoro and aldehyde groups also allow post-functionalization.
- Synthesis of fluorine-rich, crystalline covalent organic frameworks such as TPTF-COF.
- Building pH-responsive fluorescent COFs for probe and sensor work.
- Preparation of COF-based membranes, including nylon-supported membranes for dye enrichment and interception.
- Fluoro-substituted COF materials for photoelectrochemical detection of dopamine.
| Brand | Ossila |
|---|---|
| CAS number | 2088007-04-7 |
| Molecular formula | C27H15F3O3 |
| Purity | >98% |
| Category | — |
| Pack sizes | 250 mg, 500 mg, 1 g, 5 g |
| Physical form | White to yellow to orange powder/crystals |
| Storage | — |
- Product code: B3921
- Molecular Weight: 444.40 g/mol
- Synonyms: TFFPB, 3,3''-Difluoro-5'-(3-fluoro-4-formylphenyl)-[1,1':3',1''-terphenyl]-4,4''-dicarbaldehyde
- Classification / Family: Terphenyls, COF ligands, Fluorinated building blocks
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