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 of 31 P NMR and GPC analyses demonstrate that molecular weight increases linearly as a function of monomer consumption, exhibiting first order kinetics with respect to monomer concentration up to high monomer conversion. Thus, the molecular weight can be controlled by varying the initiator (H 2 O) to monomer ratio.

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A novel developmental genetic programming methodology for mathematical modeling and neuroevolution

A novel developmental genetic programming methodology for mathematical modeling and neuroevolution