[en] This feature article focuses on a novel strategy towards macrocyclic (co)polyesters that combines controlled ring-opening polymerization of lactones initiated by a cyclic tin(IV) dialkoxide and intramolecular cyclization by photocross- linking of pendant unsaturations next to the propagating sites. No linear species is ever involved in the polymerization and permanent cyclization steps, which allows higher molecular weight macrocycles to be prepared with high efficiency and no need for further purification. Moreover, this synthetic route is very flexible to the point where macrocyclic polyesters with more complex although well-defined architectures, such as tadpole-shaped and sun-shaped copolyesters, can be tailored. Synthesis of well-defined eight-shaped polyesters and twin tadpole-shaped copolymers has also been explored by using a spirocyclic tin(IV) alkoxides as an initiator. When functional lactones were introduced, the ‘click’ copper-mediated cycloaddition [3+2] reaction was utilized to make the eight-shaped and twin tadpole-shaped copolyesters amphiphilic.
Research Center/Unit :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry Materials science & engineering
Author, co-author :
Gao, Ch; Liaoning SHIHUA University, China > Department of Polymer Materials and Engineering
Li, Y; Liaoning SHIHUA University, China > Department of Polymer Materials and Engineering
Chi, J; Liaoning SHIHUA University, China > Department of Polymer Materials and Engineering
Lecomte, Philippe ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Robert ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Christine ; Université de Liège - ULiège > Département de chimie (sciences) > Centre d'études et de rech. sur les macromolécules (CERM)
Lei, L; Liaoning SHIHUA University, China > Department of Polymer Materials and Engineering
Li, Haiying ; Liaoning SHIHUA University, China > Department of Polymer Materials and Engineering
Language :
English
Title :
A novel strategy towards cyclic aliphatic (co)polyesters
BELSPO - Service Public Fédéral de Programmation Politique scientifique F.R.S.-FNRS - Fonds de la Recherche Scientifique NSCF - National Natural Science Foundation of China The State Ministry of Education The Scientific Research Foundation for the Returned Overseas Chinese Scholars
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