Abstract
We report an efficient way, sequential double click reactions, for the preparation of brush copolymers with AB block-brush architectures containing polyoxanorbornene (poly (ONB)) backbone and poly(ε-caprolactone) (PCL), poly(methyl methacrylate) (PMMA) or poly(tert-butyl acrylate) (PtBA) side chains: poly(ONB-g-PMMA)-b-poly(ONB-g-PCL) and poly(ONB-g-PtBA)-b-poly(ONB-g- PCL). The living ROMP of ONB affords the synthesis of well-defined poly(ONB-anthracene)20-b-poly (ONB-azide)5 block copolymer with anthryl and azide pendant groups. Subsequently, well-defined linear alkyne end-functionalized PCL (PCL-alkyne), maleimide end-functionalized PMMA (PMMA-MI) and PtBA-MI were introduced onto the block copolymer via sequential azide-alkyne and Diels-Alder click reactions, thus yielding block-brush copolymers. The molecular weight of block-brush copolymers was measured via triple detection GPC (TD-GPC) introducing the experimentally calculated dn/dc values to the software.
| Original language | English |
|---|---|
| Pages (from-to) | 886-892 |
| Number of pages | 7 |
| Journal | Journal of Polymer Science, Part A: Polymer Chemistry |
| Volume | 49 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 15 Feb 2011 |
Keywords
- azide-alkyne click reaction
- block-brush copolymers
- brush copolymers
- Diels-Alder click reaction
- graft copolymers
- Grubbs' catalyst
- poly(ε-caprolactone)
- poly(methyl methacrylate)
- poly(tert-butyl acrylate)
- polyoxanorbornene
- ring opening metathesis polymerization (ROMP)
- triple detection GPC (TD-GPC)