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Enolate anionic initiator, sodium deoxybenzoin, for leading living natures by formation of aggregators at the growth chain ends

Authors

  • Joonkeun Min,

    1. Department of Nanobio Materials and Electronics and School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdan-gwagiro (Oryong-dong), Buk-gu, Gwangju 500-712, Korea
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    • Joonkeun Min and Hee-Soo Yoo contributed equally to this work.

  • Hee-Soo Yoo,

    1. Department of Nanobio Materials and Electronics and School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdan-gwagiro (Oryong-dong), Buk-gu, Gwangju 500-712, Korea
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    • Joonkeun Min and Hee-Soo Yoo contributed equally to this work.

  • Priyank N. Shah,

    1. Department of Nanobio Materials and Electronics and School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdan-gwagiro (Oryong-dong), Buk-gu, Gwangju 500-712, Korea
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  • Chang-Geun Chae,

    1. Department of Nanobio Materials and Electronics and School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdan-gwagiro (Oryong-dong), Buk-gu, Gwangju 500-712, Korea
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  • Jae-Suk Lee

    Corresponding author
    1. Department of Nanobio Materials and Electronics and School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdan-gwagiro (Oryong-dong), Buk-gu, Gwangju 500-712, Korea
    • Department of Nanobio Materials and Electronics and School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdan-gwagiro (Oryong-dong), Buk-gu, Gwangju 500-712, Korea
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Abstract

The living anionic polymerization of n-hexyl isocyanate (HIC) using a newly developed initiator forming metal–enolate complex, sodium deoxybenzoin (Na-DB), is reported. For the polymerization of HIC, Na-DB serves the dual functions of providing controlled fast initiation and efficiently protecting the living chain ends. The use of Na-DB has resulted in quantitative polymer yields (∼100%), effective control of the polymer's molecular weights, and low polydispersity index. To examine the living nature of poly(n-hexyl isocyanate) (PHIC), block copolymerization of HIC with another isocyanate monomer, 3-(triethoxysilyl)propyl isocyanate (TESPI), was carried out. The resulting block copolymer, poly(n-hexyl isocyanate)-b-poly(3-(triethoxysilyl)propyl isocyanate) (PHIC-b-PTESPI) was synthesized successfully via living anionic polymerization using Na-DB with quantitative yield and controlled molecular weight. © 2013 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013

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