Abstract
Recently, the authors have reported the synthesis of "dynamic covalent polymers" which have alkoxyamine-based dynamic covalent bonds in their main chains. In this study, the authors report the reversible "ring-crossover" polymerization behavior of macrocycles containing alkoxyamine units which can show radical crossover reaction upon heating. Simple heating of the [2+2] macrocycle in anisole at 398 K afforded the corresponding poly(alkoxyamine) with Mn=2000-18000 due to the intermolecular radical crossover reaction. A [1+1] macrocycle was also synthesized by using diacid chloride with longer spacer. The oligomers obtained by radical ring-crossover polymerization were depolymerized to the monomers mainly by the intramolecular radical exchange process under high-dilution conditions.
Original language | English |
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Title of host publication | 54th SPSJ Symposium on Macromolecules - Polymer Preprints, Japan |
Pages | 2770-2771 |
Number of pages | 2 |
Volume | 54 |
Edition | 2 |
Publication status | Published - 2005 |
Event | 54th SPSJ Symposium on Macromolecules - Yamagata, Japan Duration: Sep 20 2005 → Sep 22 2005 |
Other
Other | 54th SPSJ Symposium on Macromolecules |
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Country/Territory | Japan |
City | Yamagata |
Period | 9/20/05 → 9/22/05 |
All Science Journal Classification (ASJC) codes
- Engineering(all)