• Title, Summary, Keyword: anionic polymerzation

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Synthesis of P3HT-b-P4VP via Anionic Polymerization and its Physical Properties in Various Solvents (음이온 중합법 기반 P3HT-b-P4VP 블록공중합체 정밀 합성 및 이의 용매에 따른 물리적 특성 변화 연구)

  • Hwang, Sung Yeon;Park, Jeyoung;Oh, Dongyeop X.
    • Applied Chemistry for Engineering
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    • v.29 no.3
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    • pp.336-341
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    • 2018
  • In general, the synthesis of poly(3-hexylthiophene)(P3HT)-based block copolymers requires at least a 4-5 step process. To control the molecular weight, molecular weight distribution, and block ratio, the reaction conversion and time should be monitored. In addition, the reaction scale usually limited to several mg to g was difficult to increase due to the limitations of living radical polymerizations. In this study, we synthesized P3HT-b-poly(4-vinylprydine) (P3HT-b-P4VP) with a final product quantity of > 19 g via a 2-step synthetic method with an anionic polymerization. In this method, the molecular weight and molecular weight distribution of P3HT-b-P4VP can be well controlled without monitoring the reaction conversion. We also studied physical properties of P3HT-b-P4VP depending on different solvent systems, which were investigated by UV-vis spectroscopy, atomic force microscopy, and ultraviolet photoelectron spectroscopy.