Cu(S2CNEt2)Cl-Catalyzed Reverse Atom-Transfer Radical Polymerization of Vinyl Monomers

✍ Scribed by Peng Li; Kun-Yuan Qiu

• Book ID: 102492400
• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 124 KB
• Volume: 23
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200290006

✦ Synopsis

Abstract

A new copper catalyst containing chlorine and a photo‐labile diethylthiocarbamoylthiyl group was successfully employed in the reverse ATRP of methyl methacrylate (MMA). The polymeric chains were end‐capped with S~2~CNEt~2~, due to pseudo‐halogen atom‐transfer reaction between active and dormant species. Photopolymerization of this PMMA in the presence of fresh MMA and styrene monomers at ambient temperature yielded chain‐extended PMMA and MMA/styrene block copolymers, respectively.
GPC traces of (A) PMMA end‐capped with a photo‐labile group (pre‐PMMA), (B) chain‐extended PMMA (post‐PMMA), and (C) PMMA/styrene block copolymer (PMMA‐b‐PSt).

magnified imageGPC traces of (A) PMMA end‐capped with a photo‐labile group (pre‐PMMA), (B) chain‐extended PMMA (post‐PMMA), and (C) PMMA/styrene block copolymer (PMMA‐b‐PSt).