One-Step Synthesis of Dendritic Highly Branched Polystyrenes by Organotellurium-Mediated Copolymerization of Styrene and a Dienyl Telluride Monomer

• 山子, 茂

  Institute for Chemical Research, Kyoto University

• Yamago, Shigeru

  Institute for Chemical Research, Kyoto University

抄録

Dendritic highly branched polystyrenes (HB‐PSts) were prepared by a one‐step copolymerization of dienyl telluride 6 and St in the presence of organotellurium chain transfer agent 2. The molecular weight (MW), dendritic generation, and branching density were easily controlled by the ratio of 2 to 6 to styrene (St) with maintaining monodispersity. The branching efficiency estimated by a deuterium‐labeling experiment showed that 6 quantitatively (>95 %) served as the branching point. The end group fidelity was high (ca. 90 %) as determined by the end group transformation to pyrene‐derivative. Intrinsic viscosity of the HP‐polystyrenes was significantly lower than that of linear polystyrenes and were easily tuned by the branching number and branching density. The method is compatible of various functional groups and chloro and acetoxy‐substituted styrenes were also used as a comonomer. A tadpole block copolymer was also synthesized starting from linear PSt as a macroinitiator.

収録刊行物

• Angewandte Chemie International Edition

  Angewandte Chemie International Edition 58 (12), 3952-3956, 2019-03-18

  Wiley-VCH Verlag

キーワード

• control radical polymerization
• dienyl telluride
• hyperbranched polymer
• TERP

詳細情報

• CRID: 1050282813187249920
• NII論文ID: 120006591410
• ISSN: 14337851
• ISSN: 15213773
• HANDLE: 2433/237368
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles