An Access Route to Polyferrocenes via Modular Conjugation

✍ Scribed by Christiane Lang; Dominik Voll; Andrew J. Inglis; Nico Dingenouts; Anja S. Goldmann; Leonie Barner; Christopher Barner-Kowollik

• Book ID: 102484230
• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 476 KB
• Volume: 212
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.201100010

✦ Synopsis

Abstract

The application of copper‐catalyzed azide/alkyne cycloaddition to monomers containing a ferrocene unit leads to polyferrocenes with ferrocene in the backbone. Catalyst performance and kinetic studies of a model system comprising 1,1'‐bis(azidoethyl)ferrocene and propargyl ether revealed the usage of CuI and DBU as the catalyst in DMF at 50 °C as efficient reaction conditions for the synthesis. The resulting polymers display molecular weight‐averages up to $\overline {M} _{{\rm n}} $ = 10 000 and $\overline {M} _{{\rm w}} $ = 33 000. The polyaddition of monomers both containing ferrocene units led to polyferrocenes with $\overline {M} _{{\rm n}} $ between 4 000 and 11 000 ($\overline {M} _{{\rm w}} $ up to 78 000). The present study thus provides a pathway to polyferrocenes based on modular ligation chemistry.
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