Synthesis and characterization of a temperature-responsive amphiphilic block copolymer containing a liquid crystalline unit

Masamichi Nishihara, Yoshihiko Murakami, Takashi Shinoda, Jun Yamamoto, Masayuki Yokoyama

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

To create a stimuli-responsive micelle, we synthesized a novel temperature-responsive amphiphilic block copolymer, poly(ethylene glycol)-block-poly{6-[4-(4-pyridylazo)phenoxy]-hexyl methacrylate} [PEG-b-P(AzoPyl)], by undertaking the RAFT polymerization of an AzoPyl monomer with a PEG mac-ro-RAFT reagent. This block copolymer possesses a liquid crystalline unit derived from a hydrophobic AzoPyl/carboxylic acid complex. The PEG-b-P(AzoPyl/decanoic acid (C 9COOH)) complex formed a micelle structure (weight-average diameter = 68 nm). DSC results confirmed that the PEG-b-P(AzoPyl/C 9COOH) micellar solution exhibited thermodynamic phase-transition behavior.

Original languageEnglish
Pages (from-to)1214-1215
Number of pages2
JournalChemistry Letters
Volume37
Issue number12
DOIs
Publication statusPublished - 2008
Externally publishedYes

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Polyethylene glycols
Block copolymers
Crystalline materials
Liquids
Micelles
Temperature
Carboxylic Acids
Monomers
Phase transitions
Polymerization
Thermodynamics

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Synthesis and characterization of a temperature-responsive amphiphilic block copolymer containing a liquid crystalline unit. / Nishihara, Masamichi; Murakami, Yoshihiko; Shinoda, Takashi; Yamamoto, Jun; Yokoyama, Masayuki.

In: Chemistry Letters, Vol. 37, No. 12, 2008, p. 1214-1215.

Research output: Contribution to journalArticle

Nishihara, Masamichi ; Murakami, Yoshihiko ; Shinoda, Takashi ; Yamamoto, Jun ; Yokoyama, Masayuki. / Synthesis and characterization of a temperature-responsive amphiphilic block copolymer containing a liquid crystalline unit. In: Chemistry Letters. 2008 ; Vol. 37, No. 12. pp. 1214-1215.
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