Molecules (Basel, Switzerland), 2021-01, Vol.26 (2), p.322
2021
Details
- Autor(en) / Beteiligte
- Titel
- Controlled Synthesis of Polyphosphazenes with Chain-Capping Agents
- Ist Teil von
- Molecules (Basel, Switzerland), 2021-01, Vol.26 (2), p.322
- Ort / Verlag
- Switzerland: MDPI AG
- Erscheinungsjahr
- 2021
- Link zum Volltext
- Quelle
- Free E-Journal (出版社公開部分のみ）
- Beschreibungen/Notizen
- -alkyl phosphoranimines were synthesized via the Staudinger reaction of four different alkyl azides with tris(2,2,2-trifluoroethyl) phosphite. -adamantyl, -benzyl, - -butyl, and -trityl phosphoranimines were thoroughly characterized and evaluated as chain-capping compounds in the anionic polymerization of -tris(2,2,2-trifluoroethoxy)- -trimethylsilyl phosphoranimine monomer. All four compounds reacted with the active chain ends in a bulk polymerization, and the alkyl end groups were identified by H-NMR spectroscopy. These compounds effectively controlled the molecular weight of the resulting polyphosphazenes. The chain transfer constants for the monomer and -benzyl phosphoranimine were determined using Mayo equation.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1420-3049eISSN: 1420-3049DOI: 10.3390/molecules26020322Titel-ID: cdi_doaj_primary_oai_doaj_org_article_079a96bf66354cf0be635a509f36b784
- Format
- –
- Schlagworte
- Anionic polymerization, Bulk polymerization, Chain transfer, fluoride, Fluorides, Ligands, Magnetic Resonance Spectroscopy, Mass spectrometry, Molecular Structure, Molecular weight, N-alkyl phosphoranimines, N-methylimidazole initiators, NMR, NMR spectroscopy, Nuclear magnetic resonance, Organophosphorus Compounds - chemical synthesis, Organophosphorus Compounds - chemistry, phosphoramidate esters, Phosphorus, Polymerization, Polymers, Polymers - chemical synthesis, Polymers - chemistry, Polyphosphazenes, Scientific imaging, trifluoroethoxide