Orthogonal Synthesis of Block Copolymer via Photoinduced CuAAC and Ketene Chemistries
Macromolecular Rapid Communications, cilt.37, sa.6, ss.521-526, 2016 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 37 Sayı: 6
- Basım Tarihi: 2016
- Doi Numarası: 10.1002/marc.201500563
- Dergi Adı: Macromolecular Rapid Communications
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.521-526
- Anahtar Kelimeler: block copolymers, click chemistry, copper-catalyzed azide-alkyne cycloaddition, ketene chemistry, photochemical reactions
- Kırklareli Üniversitesi Adresli: Hayır
Özet
A novel route for the synthesis of poly(ethylene glycol)-b-polystyrene copolymer, starting from commercially available poly(ethylene glycol) methyl ether and azido terminated polystyrene prepared by atom transfer radical polymerization and subsequent nucleophilic substitution, is applied with simplicity and high efficiency. The combination of photoinduced copper (I)-catalyzed alkyne-azide cycloaddition (CuAAC) and ketene chemistry reactions proceeds either simultaneously or sequentially in a one-pot procedure under near-visible light irradiation. In both cases, excellent block copolymer formations are achieved, with an average molecular weight of around 7000 g mo1-1 and a polydispersity index of 1.20. A simple approach combining photoinduced copper (I)-catalyzed alkyne-azide cycloaddition (CuAAC) and ketene chemistry reactions is proposed to synthesize poly(ethylene glycol)-b-polystyrene copolymer starting from easily accessible blocks, poly(ethylene glycol) methyl ether, and azido terminated polystyrene. The process proceeds either simultaneously or sequentially in a one-pot procedure under near-visible light irradiation.