Introduction of Functional Groups into Divergent Starburst Polysiloxanes.

DOI 3 Citations 13 References
  • Morikawa Atsushi
    Department of Organic and Polymeric Materials, Tokyo Institute of Technology
  • Kakimoto Masa-aki
    Department of Organic and Polymeric Materials, Tokyo Institute of Technology
  • Imai Yoshio
    Department of Organic and Polymeric Materials, Tokyo Institute of Technology

Description

Functional groups, such as dimethylamino and hydroxy groups, were introduced to the periphery position of the third generation starburst polysiloxane (G3) prepared by the divergent method. Phenylsilane unit of the second generation polymer (G2-Ph) was converted to the diethylaminosilane unit (G2-DEA) via the corresponding bromosilane (G2-Br) generated by the reaction of the phenylsilane with bromine. Next, G2-DEA was reacted with the building block possessing one silanol and two dimethylamino, or one silanol and two benzyloxy unit, yielding the starburst polysiloxanes possessing 24 dimethylamino groups (G3-DMA) or benzyloxy groups (G3-Bz) at the periphery position. The latter polymer was converted to G3-OH which had 24 hydroxy groups. The IR, 1H NMR, and GPC measurements supported a successful introduction of these functional groups. The solubility of the starburst polysiloxanes was remarkably affected by the functional groups.

Journal

  • Polymer Journal

    Polymer Journal 24 (6), 573-581, 1992

    The Society of Polymer Science, Japan

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Keywords

Details 詳細情報について

  • CRID
    1390282681266922496
  • NII Article ID
    130004429348
  • DOI
    10.1295/polymj.24.573
  • COI
    1:CAS:528:DyaK38XkslSnsb0%3D
  • ISSN
    13490540
    00323896
  • Text Lang
    en
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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