Robust and Operationally Simple Synthesis of Poly(bis(2,2,2-trifluoroethoxy) phosphazene) with Controlled Molecular Weight, Low PDI, and High Conversion

• DOI: 10.1021/mz500199x
• Publication Date: 2014-05-29T12:02:19Z
• Authors: Joachim H. G. Ste...; Barnaby W. Greenland; Stephen Johns; Matthew P. Parker; Robert C. J. Atki...; Ian A. Cade; Peter Golding; Stephen J. Trussell
• Keywords: Phosphazene; Molar mass distribution

Synthetically straightforward conditions have been developed for the preparation of poly(bis 2,2,2-trifluoroethoxy)phosphazene with low PDI (<1.15) at high conversion (75-99%) and on a multigram scale. A combination 31P NMR GPC analyses demonstrate that molecular weight increases linearly as function monomer consumption, exhibiting first order kinetics respect to concentration up conversion. Thus, can be controlled by varying initiator (H2O) ratio.