Reference : Combination of ring-opening polymerization and "click" chemistry for the synthesis of...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Physical, chemical, mathematical & earth Sciences : Physics
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/932
Combination of ring-opening polymerization and "click" chemistry for the synthesis of an amphiphilic tadpole-shaped poly(epsilon-caprolactone) grafted by PEO
English
Li, Haiying [> > > >]
Riva, Raphaël mailto [Université de Liège - ULg > > Centre d'études et de rech. sur les macromolécules (CERM) >]
Jérôme, Robert mailto [Université de Liège - ULg > > Centre d'études et de rech. sur les macromolécules (CERM) >]
Lecomte, Philippe mailto [Université de Liège - ULg > > Centre d'études et de rech. sur les macromolécules (CERM) >]
20-Feb-2007
Macromolecules
Amer Chemical Soc
40
4
824-831
Yes (verified by ORBi)
International
0024-9297
Washington
[en] ring-opening polymerization ; lactone ; macrocycle ; click chemistryoaddition ; copper-mediated Huisgen's cycloaddition ; polymer functionalization
[en] A tadpole shaped poly(epsilon-caprolactone) (PCL; Mn = 24 500) was made amphiphilic by grafting the two PCL tails with PEO. In the first step, a macrocyclic PCL was synthesized by ring-opening polymerization of epsilon-caprolactone (epsilon-CL) initiated by a cyclic tin(IV) dialkoxide and stabilized by local intramolecular photo-cross-linking. In the second step, the polymerization of a mixture of epsilon CL and alpha-chloro-epsilon-caprolactone (alpha Cl epsilon CL) was resumed with formation of two activated chloride containing PCL tails. In the third step, the chlorides were converted into azides onto which alkynyl end-capped PEO was grafted by the copper-mediated Huisgen's cycloaddition [3 + 2], thus giving a "click" reaction. The thermal properties of the final copolymer and the precursors were analyzed by differential scanning calorimetry. The amphiphilicity of the final copolymer was confirmed by micellization in water.
Center for Education and Research on Macromolecules (CERM)
Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy ; Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers
http://hdl.handle.net/2268/932
10.1021/ma062488f
http://pubs.acs.org/cgi-bin/article.cgi/mamobx/2007/40/i04/pdf/ma062488f.pdf

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