Block-Brush Copolymers via ROMP and Sequential Double Click Reaction Strategy

Dag A., Sahin H., Durmaz H., Hızal G., Tunca Ü.

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, vol.49, no.4, pp.886-892, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 49 Issue: 4
  • Publication Date: 2011
  • Doi Number: 10.1002/pola.24499
  • Journal Name: JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.886-892
  • Keywords: azide-alkyne click reaction, block-brush copolymers, brush copolymers, Diels-Alder click reaction, graft copolymers, Grubbs' catalyst, poly(epsilon-caprolactone), poly(methyl methacrylate), polyoxanorbornene, poly(tert-butyl acrylate), ring opening metathesis polymerization (ROMP), triple detection GPC (TD-GPC), RING-OPENING METATHESIS, CYLINDRICAL MOLECULAR BRUSHES, DEFINED GRAFT-COPOLYMERS, MULTIARM STAR BLOCK, ONE-POT SYNTHESIS, POLY(ETHYLENE GLYCOL), TRIBLOCK COPOLYMERS, PRECISE SYNTHESIS, TANDEM SYNTHESIS, POLYMERIZATION
  • Bezmialem Vakıf University Affiliated: No

Abstract

We report an efficient way, sequential double click reactions, for the preparation of brush copolymers with AB black-brush architectures containing polyoxanorbornene (poly (ONB)) backbone and poly(epsilon-caprolactone) (PCL), poly(methyl methacrylate) (PMMA) or poly(tert-butyl acrylate) (PtBA) side poly(ONB-g-PMMA)-b-poly(ONB-g-PCL) and poly(ONB-g-F tBA)-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 Pt8A-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. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 886-892, 2011