Fluoride-initiated Anionic Ring-opening Polymerization: Mono- or Difunctional Polydimethylsiloxanes with Different Termini

The current paradigm in polymer chemistry increasingly involves controlled syntheses with better structural control and, consequently, products with narrow ranges of properties. Traditionally, silicone polymers are prepared under equilibrating conditions to give broad mixtures. The alternative, kinetically controlled ring opening polymerization at low temperature using organometallic initiators with promoters under inert atmospheres, can …