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Structures and Chiroptical Properties of Thermoresponsive Block Copolymers Containing L-Proline Moieties

✍ Scribed by Hideharu Mori; Hideyuki Iwaya; Takeshi Endo

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
269 KB
Volume
208
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Amino acid‐based block copolymers containing poly(A‐Pro‐OMe) have been synthesized by RAFT polymerization using the dithioester‐terminated poly(DMA) as a macro‐CTA. An amphiphilic block copolymer composed of polystyrene as a hydrophobic segment and poly(A‐Pro‐OMe) as a hydrophilic segment was also prepared using polystyrene as the macro‐CTA. The chiroptical properties of the block copolymer, poly(DMA)‐block‐poly(A‐Pro‐OMe), was evaluated by specific rotation, CD, and UV‐vis spectroscopy. The assembled structure of the block copolymer on a mica surface was characterized by SFM. Thermally induced phase separations of the random and block copolymers were also studied in aqueous solution.

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