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Complexation of Amino‐Acid‐Based Block Copolymers With Dual Thermoresponsive Properties and Water‐Soluble Silsesquioxane Nanoparticles
Author(s) -
Mori Hideharu,
Saito Shoko,
Shoji Kento
Publication year - 2011
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.201100420
Subject(s) - lower critical solution temperature , copolymer , silsesquioxane , polymer chemistry , upper critical solution temperature , nanoparticle , chain transfer , raft , polymerization , reversible addition−fragmentation chain transfer polymerization , chemistry , materials science , radical polymerization , polymer , organic chemistry , nanotechnology
Smart organic–inorganic hybrids are prepared using non‐covalent interactions between water‐soluble silsesquioxane nanoparticles and two amino acid‐based block copolymers prepared by reversible addition–fragmentation chain transfer (RAFT) polymerization. A block copolymer displaying lower critical solution temperature (LCST) and upper critical solution temperature (UCST) is employed, in which only poly( N ‐acryloyl‐4‐ trans ‐hydroxy‐ L ‐proline) segment could interact with the nanoparticles, whereas another poly( N ‐acryloyl‐ L ‐proline methyl ester) segment shows a thermoresponsive property without any interaction. The complexation of another type of dual thermosensitive block copolymer with two different LCSTs and the silsesquioxane nanoparticles is also investigated.