Synthesis of Terpyridine-Terminated Polymers by Anionic Polymerization
-
Guerrero-Sanchez, Carlos; Lohmeijer, Bas G. G.; Meier, Michael; Schubert, Ulrich S.
- 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.
- Year:
- 2005
- Type of Publication:
- Article
- Journal:
- Macromolecules
- Volume:
- 38
- Pages:
- 10388 - 10396