Poly(monophosphazophosphazenes): New Polymers with N═PR3 Side Groups

Harry R. Allcock, Susan E. Kuharcik, Christopher T. Morrissey, Dennis C. Ngo

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Phosphazene high polymers with N═PR3 (phosphazo) side groups are of interest from both the theoretical and potential technological points of view. High polymeric monophosphazophosphazenes were prepared with trifluoroethoxy, phenoxy, anilino, and propylamine side groups. Small-molecule cyclic counterparts were also synthesized as model systems for the macromolecular reactions. These compounds were prepared using both (trichlorophosphazo)pentachlorocyclotriphosphazene (N3P3Cl5NPCl3) and (trichlorophosphazo)pentafluorocyclotriphosphazene (N3P3F5NPCl3) as the starting materials. Specifically, the synthesis of monophosphazophosphazene polymers through the thermal ring-opening polymerization of N3P3Cl5NPCl3 at 150–180 °C or of N3P3F5NPCl3 at 200–210 °C is reported. Differences in the reactivity of the phosphazochloro-and the phosphazofluorophosphazenes to halogen replacement reactions were found at both the cyclic trimeric and high polymeric levels. In general, replacement of the chlorine atoms by organic groups was achieved with greater ease than the replacement of fluorine atoms. For the reagents studied, the replacement of halogen atoms by sodium trifluoroethoxide was more facile than with the other nucleophiles. A comparison is made between the properties of monophosphazophosphazenes, classical phosphazenes, and 1,1-diphosphazophosphazenes.

Original languageEnglish (US)
Pages (from-to)7556-7564
Number of pages9
JournalMacromolecules
Volume27
Issue number26
DOIs
StatePublished - Dec 1 1994

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Polymers
Halogens
Atoms
Propylamines
Nucleophiles
Fluorine
Chlorine
Ring opening polymerization
Sodium
Molecules
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Allcock, Harry R. ; Kuharcik, Susan E. ; Morrissey, Christopher T. ; Ngo, Dennis C. / Poly(monophosphazophosphazenes) : New Polymers with N═PR3 Side Groups. In: Macromolecules. 1994 ; Vol. 27, No. 26. pp. 7556-7564.
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Poly(monophosphazophosphazenes) : New Polymers with N═PR3 Side Groups. / Allcock, Harry R.; Kuharcik, Susan E.; Morrissey, Christopher T.; Ngo, Dennis C.

In: Macromolecules, Vol. 27, No. 26, 01.12.1994, p. 7556-7564.

Research output: Contribution to journalArticle

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AU - Allcock, Harry R.

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