Ring-Opening Polymerization (ROP) of Strained Metallocenophanes
Synthetic organic polymers are predominantly based on chains of carbon atoms and have tremendous technological utility. The presence of transition metal elements in the main chain of a polymer is expected to lead to macromolecules which combine processability with novel physical or catalytic properties. To date the preparation of transition metal-based polymers in which the metal atoms are held in close proximity so as to promote interactions has been dominated by synthetic problems and examples of soluble, well-defined, and well-characterized materials of reasonable molecular weight (Mn > 104) are very rare.1
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