Soluble, porous semifluorinated poly(arylene ether) ladder polymers from 2,3,4,5,6-pentafluorobenzonitrile
| Autor: | Krishnan Ranganathan, Anbanandam Parthiban |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Polymers and Plastics Hydroquinone Chemistry Organic Chemistry Arylene Ether 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Nucleophile Yield (chemistry) Polymer chemistry Materials Chemistry Nucleophilic substitution Moiety 0210 nano-technology |
| Zdroj: | Polymer. 135:295-304 |
| ISSN: | 0032-3861 |
| Popis: | A series of new ladder polymers are synthesized from nucleophilic substitution reactions between tetrafunctional fluorinated monomers derived from 2,3,4,5,6-pentafluorobenzonitrile (PFBN) and various bisphenols such as hydroquinone (HQ), bisphenol-A (BP-A), and 4,4′-(hexafluoroisopropylidene)diphenol (6F-BPA) by a two-step process under mild conditions. The tetrafunctional semi-fluorinated derivatives were obtained by reacting PFBN with nucleophiles such as -S2-, HQ, BP-A, 6F-BPA in 2:1 mol ratio at room temperature. The tetrafunctional derivatives were subsequently reacted with bisphenols of the same or different type in 1:2 mol ratios respectively to yield soluble porous polymers. The MALDI-TOF MS analysis shows that each repeating unit of polymer chain consists of one unit derived from the tetrafunctional moiety and two bisphenoxy moieties exhibiting ladder structure in the polymer backbone. These polymers exhibit porous nature and the porosity can be fine-tuned by changing the bisphenols at either step. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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