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 |
|---|---|
| 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 |
|---|---|
| Country | Japan |
| City | Yamagata |
| Period | 9/20/05 → 9/22/05 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
Reversible ring-crossover polymerization of macrocycles based on radical exchange reaction. / Otsuka, Hideyuki; Yamaguchi, Go; Higaki, Yuji; Takahara, Atsushi.
54th SPSJ Symposium on Macromolecules - Polymer Preprints, Japan. Vol. 54 2. ed. 2005. p. 2770-2771.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Reversible ring-crossover polymerization of macrocycles based on radical exchange reaction
AU - Otsuka, Hideyuki
AU - Yamaguchi, Go
AU - Higaki, Yuji
AU - Takahara, Atsushi
PY - 2005
Y1 - 2005
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=33645555847&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33645555847&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33645555847
VL - 54
SP - 2770
EP - 2771
BT - 54th SPSJ Symposium on Macromolecules - Polymer Preprints, Japan
ER -