SYNTHESIS OF STAR-SHAPED POLYLACTIDES END-FUNCTIONALIZED WITH COUMARIN GROUPS AND THEIR REVERSIBLE CROSS-LINKING REACTION

DOI IR (HANDLE)

Bibliographic Information

Other Title
  • 鎖末端にクマリン基を有する星型ポリ乳酸の合成と可逆的光二量化反応

Description

A series of star-shaped polylactides end-functionalized with coumarin groups (x-star-PDLLA (C)) was successfully synthesized by a ring-opening polymerization of DL-lactide with trimethylolethane (x = 3), pentaerythritol (x = 4), and dipentaerythritol (x = 6) as an initiator, followed by a Mitsunobu reaction with 4-methylumbelliferone to obtain the corresponding three-armed (3-star-PDLLA (C)), four-armed (4-star-PDLLA(C)), and six-armed star-shaped polylactide (6-star-PDLLA(C)), respectively. The resulting star-shaped polymers were then applied for the reversible cross-linking reaction by the alternating UV (365 nm) / UV (254 nm) irradiation. It was suggested that glass transition temperatures of the resulting polymers depend on their number of arms and arm lengths.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390855965512570624
  • DOI
    10.15002/00025306
  • HANDLE
    10114/00025306
  • ISSN
    24368083
  • Text Lang
    ja
  • Article Type
    departmental bulletin paper
  • Data Source
    • JaLC
    • IRDB
  • Abstract License Flag
    Allowed

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