A powerful tool for preparing peripherally post-functionalized multiarm star block copolymer


Çakır Yiğit N. , Hızal G. , Tunca Ü.

POLYMER BULLETIN, cilt.75, ss.3523-3538, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 75 Konu: 8
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1007/s00289-017-2218-5
  • Dergi Adı: POLYMER BULLETIN
  • Sayfa Sayıları: ss.3523-3538

Özet

A facile synthetic approach for the design of peripherally post-functionalized multiarm star block copolymer has been established by nucleophilic aromatic substitution reaction of pentafluorophenyl periphery functional multiarm star polymer with alcohol moieties of poly(ethylene glycol) (PEG-OH) under mild reaction conditions. For this purpose, alpha-fluoro-functionalized PS (alpha-fluoro-PS) was prepared by atom transfer radical polymerization (ATRP) of styrene (St) and was allowed to react with divinyl benzene (DVB) as a linking agent yielding (fluoro-PS)(n)-polyDVB multiarm star polymer. Then, (PEG)(m)-(PS)(n)-polyDVB multiarm star block copolymer was synthesized via nucleophilic addition of PEG-OH precursor with (fluoro-PS)(n)-polyDVB multiarm star polymer in the presence of sodium hydride in tetrahydrofuran at reflux for 3 h. Multiarm star polymers were characterized using triple detection gel permeation chromatography (TD-GPC), FT-IR, H-1 NMR, F-19 NMR and C-13 NMR.