Premium
Terpyridines as supramolecular initiators for living polymerization methods
Author(s) -
Heller Marcel,
Schubert Ulrich S.
Publication year - 2002
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200201)177:1<87::aid-masy87>3.0.co;2-1
Subject(s) - terpyridine , polymer chemistry , polymerization , hydroxymethyl , polymer , molar mass distribution , supramolecular chemistry , chemistry , chain transfer , metal , materials science , radical polymerization , molecule , organic chemistry
Bis (5,5″‐ bis (bromomethyl)‐2,2′:6′,2″‐terpyridine), bis ‐4′‐(4‐bromomethylphenyl)‐2,2′:6′,2″‐terpyridine and 4‐hydroxymethyl‐5′,5″‐dimethyl‐2,2′:6′,2″‐terpyridine metal complexes have been used as initiators for the living polymerization of 2‐oxazolines and L ‐lactides. In both cases polymers with controlled molecular weights and narrow molecular weight distributions have been obtained. In‐line diode array GPC measurements of iron(II) complexed poly(ethyloxazoline)s showed an unexpected absence of fragmentation. Viscosity experiments demonstrated the differences of the complexed and uncomplexed systems.