New phosphorus-fluorocarbon hybrid polymer systems

The thermally-induced cyclodimerization of aryl-trifluorovinyl ethers (TFVE , 1) readily affords highly stable and processible perfluorocyclobutane (PF CB, 2) polymers, many of which have useful optical, mechanical, and/or surf ace properties. We report here on the synthesis and characterization of som e novel TFVE and PFCB functionalized phosphorus-based polymers systems. The se new polymers have been prepared by three general methods: (1) condensati on polymerization of appropriate TFVE-substituted Si-N-P precursors, (2) de protonation-substitution reactions of preformed poly(methylphenyl-phosphaze ne), and (3) cyclodimerization-polymerization of various TFVE-substituted p hosphorus derivatives.