Premium
Synthesis of Poly( N ‐isopropylacrylamide)‐ Block ‐Poly( tert ‐Butyl Methacrylate) Block Copolymer by Visible Light–Induced Metal‐Free Atom Transfer Polymerization
Author(s) -
Xu YangYang,
Li Gaocan,
Hu Yanfei,
Wang Yunbing
Publication year - 2018
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201800192
Subject(s) - atom transfer radical polymerization , copolymer , polymer chemistry , poly(n isopropylacrylamide) , polymerization , dispersity , reversible addition−fragmentation chain transfer polymerization , monomer , radical polymerization , chain transfer , chemistry , living free radical polymerization , materials science , organic chemistry , polymer
Atom transfer radical polymerization (ATRP) is one of the most powerful methodologies for polymerization. Well‐controlled ATRP of N ‐isopropylacrylamide (NIPAAm) could be obtained in organic‐water mixture solvent with conventional metal catalyst/ligand catalyst system. However, the mixture solvent is not suitable for copolymerization of NIPAAm with hydrophobic monomers. Moreover, further purification of metal was required for biomedical polymerization. Here, poly( N ‐isopropylacrylamide) (PNIPAAm) is synthesized by visible light–induced metal‐free ATRP using a photoredox catalyst. PNIPAAm is obtained with high conversion and controlled molecular weight with low dispersity. Moreover, poly( N ‐isopropylacrylamide)‐ block ‐poly( tert ‐butyl methacrylate) (PNIPAAm‐ b ‐PMAA) block copolymer can be synthesized by such metal‐free ATRP. PNIPAAm‐ b ‐PMAA can be obtained by following hydrolysis.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom