Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 122, Issue 40, Pages 9592-9599Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja001736z
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A novel protocol for designing a variety of topologically unique multicyclic polymer architectures, such as mono-, bi-, and tricyclic polymers as well as topological isomers; has been proposed on the basis of an electrostatic self-assembly of polymer precursors having five-membered cyclic ammonium salt groups accompanying plurifunctional carboxylate counteranions. Upon dilution in an organic medium at a concentration of below a gram per liter, the multiple aggregates of the polymer precursors completely dissociate into a smallest assembly, and cations and anions balance the charge. The subsequent covalent fixation through the ring-opening reaction of cyclic ammonium salt groups by carboxylate counteranions provides an efficient means for a variety of polymer architectures comprising mono- and multicyclic polymer units.
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