Web Release Date: November 12,
Synthesis of Terpyridine-Terminated Polymers by Anionic Polymerization
Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands
Received May 13, 2005
Revised Manuscript Received September 19, 2005
Abstract:
The synthesis of terpyridine-functionalized polystyrene was achieved by reacting 4'-chloro-2,2':6',2' '-terpyridine (terminating agent) with "living" polymeric carbanions synthesized by anionic polymerization. The obtained polymers were characterized by gel permeation chromatography, nuclear magnetic resonance, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, elemental analysis, and ultraviolet-visible absorption spectroscopy. The conversion of the polystyryllithium species into the corresponding 1,1-diphenylalkyllithium chain ends by reaction with 1,1-diphenylethylene (DPE) was a necessary step in order to promote an efficient chain-end functionalization and to avoid undesired side reactions (coupling) between the polymer chains due to the high reactivity of the polystyryl anion. Moreover, the obtained well-defined terpyridine-terminated polystyrenes were used for the synthesis of self-assembled metallo-supramolecular block copolymers.
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