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Synthesis of coil‐rod‐coil block copolymers with the aid of anionic polymerization
Author(s) -
Tsitsilianis Constantinos,
Voyiatzis George A.,
Kallitsis Joannis K.
Publication year - 2000
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20001101)21:16<1130::aid-marc1130>3.0.co;2-r
Subject(s) - copolymer , polymer chemistry , materials science , polystyrene , polymerization , gel permeation chromatography , differential scanning calorimetry , electromagnetic coil , bifunctional , polymer , chemistry , composite material , organic chemistry , catalysis , physics , thermodynamics , engineering , electrical engineering
A two step synthetic procedure towards model coil‐rod‐coil triblock copolymers was developed. In the first step, α,ω ‐bromo‐functionalized oligophenylenes (rod part) were modified to anionic bifunctional initiators. In the second step, flexible chains were grown from both ends of the rod part by an anionic polymerization procedure leading to polystyrene‐rod‐polystyrene and/or poly(2‐vinyl pyridine)‐rod‐poly(2‐vinyl pyridine) triblock copolymers. Characterization of the final products by gel permeation chromatography, NMR spectroscopy, light scattering, Raman spectroscopy and differential scanning calorimetry demonstrated that well‐defined coil‐rod‐coilblock copolymers can be synthesized.