Self-assembly and covalent fixation for topological polymer chemistry

Authors
Citation
Y. Tezuka et H. Oike, Self-assembly and covalent fixation for topological polymer chemistry, MACRO RAPID, 22(13), 2001, pp. 1017-1029
Citations number
51
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
MACROMOLECULAR RAPID COMMUNICATIONS
ISSN journal
10221336 → ACNP
Volume
22
Issue
13
Year of publication
2001
Pages
1017 - 1029
Database
ISI
SICI code
1022-1336(20010918)22:13<1017:SACFFT>2.0.ZU;2-O
Abstract
A novel methodology (electrostatic self-assembly and covalent fixation) has been proposed for designing various nonlinear polymer topologies, includin g monocyclic and polycyclic polymers, cyclic macromonomers and cyclic telec helics (kyklo-telechelics), a-ring-with-a-branch topology polymers and poly meric topological isomers, as well as branched model polymers, such as star polymers and polymacromonomers. Thus, new telechelic polymer precursors ha ving a moderately strained cyclic onium salt group as single or multiple en d groups and carrying multifunctional carboxylates as the counterions were prepared through an ion-exchange reaction. A variety of electrostatic self- assemblies of these polymer precursors, formed particularly in dilute organ ic solution, was then subjected to heat in order to convert the ionic inter actions into covalent linkages by ring-opening reaction, and to produce top ologically unique, nonlinear polymer architectures in high efficiency.