Complex macromolecular chimeras

Anastasis Karatzas, Hermis Iatrou, Nikos Hadjichristidis*, Kyouichi Inoue, Kenji Sugiyama, Akira Hirao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


By combining two living polymerizations, anionic and ring opening (ROP), the following novel multiblock multicomponent linear and miktoarm star (μ-star) polymer/polypeptide hybrids (macromolecular chimeras) were synthesized: Linear, PBLL-b-PBLG-b-PS-b-PBLG-b-PBLL; 3μ-stars, (PS)2(PBLG or PBLL), (PS)(PI)(PBLG or PBLL); 4μ-stars, (PS)2[P(α-MeS)](PBLG or PBLL), (PS)2(PBLG or PBLL)2 [PS, polystyrene; PI, polyisoprene; P(α-MeS), poly(α-methylstyrene); PBLG, poly(γ-benzyl-L-glutamate); and PBLL, poly(ε-tert-butyloxycarbonyl-L-lysine)]. The procedure involves (a) the synthesis of end- or in-chain amino-functionalized polymers, by anionic polymerization high vacuum techniques and appropriate linking chemistry and (b) the use of the amino groups for the ROP of α-amino acid carboxyanhydrides (NCAs). Molecular characterization revealed the high molecular weight and compositional homogeneity of the macromolecular chimeras prepared. The success of the synthesis was based mainly on the high vacuum techniques used for the ROP of NCAs, ensuring the avoidance of unwanted polymerization mechanisms and termination reactions.

Original languageEnglish (US)
Pages (from-to)2072-2080
Number of pages9
Issue number7
StatePublished - Jul 2008
Externally publishedYes

ASJC Scopus subject areas

  • Bioengineering
  • Biomaterials
  • Polymers and Plastics
  • Materials Chemistry


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