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An Access Route to Polyferrocenes via Modular Conjugation
Author(s) -
Lang Christiane,
Voll Dominik,
Inglis Andrew J.,
Dingenouts Nico,
Goldmann Anja S.,
Barner Leonie,
BarnerKowollik Christopher
Publication year - 2011
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201100010
Subject(s) - ferrocene , cycloaddition , monomer , chemistry , alkyne , azide , polymer chemistry , catalysis , propargyl , polymer , organic chemistry , electrode , electrochemistry
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.