Ferrocene-functionalized polymer ring-opening metathesis

Graphical representation of the preparation of ferrocene-functionalized polymer brush arrays via SI-ROMP by DPN. (Reproduced from Liu et al. 2(X)3. Surface and site-specific ring-opening metathesis polymerization initiated by dip-pen nanolithography. Angewandte Chemie-lnternational Edition 42 (39) 4785-4789 with permission from Wiley.)... 

Schrock, Wrighton, and coworkers have reported that ring-opening metathesis polymerization (ROMP) of norbomene monomers fhnctionalized with ferrocenyl groups allowed for the isolation of polymers such as 55-58. Alternatively, polynorbornenes capped with ferrocenyl units could be produced by using a molybdenum initiator functionalized with ferrocene. When this polymerization reaction was terminated through the addition of octamethyl-ferrocenecarboxaldehyde, low molecular weight polymers such as 58 were isolated. 

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