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Designing polymer topology by electrostatic self‐assembly and covalent fixation
Author(s) -
Tezuka Yasuyuki,
Oike Hideaki
Publication year - 2000
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(200010)161:1<159::aid-masy159>3.0.co;2-l
Subject(s) - covalent bond , polymer , ionic bonding , carboxylate , materials science , self assembly , dumbbell , template , polymer chemistry , ion , nanotechnology , chemistry , organic chemistry , composite material , medicine , physical therapy
A novel methodology (electrostatic self‐assembly and covalent fixation) has been proposed for designing unusual polymer topologies such as star polymers, polymacromonomers, dumbbell‐shaped polymers as well as model network polymers. Thus new telechelic polymers having moderately strained cyclic onium salt group as single or both end groups were prepared and subjected to an ion‐exchange reaction to introduce multifunctional carboxylate anions as a counter‐anion. The electrostatically self‐assembled products were then subjected, either directly or after subsequent manipulation, to heat treatment to convert the ionic interaction into the covalent linkage by the ring‐opening reaction to produce a variety of topologically unique polymer architectures in high yields.