Novel synthesis of rod‐coil block copolymers by combination of coordination polymerization and ATRP |
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| Authors: | Koji Ishizu Naomasa Hatoyama Satoshi Uchida |
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| Institution: | 1. Department of Organic Materials and Macromolecules, International Research Center of Macromolecular Science, Tokyo Institute of Technology, 2‐12‐1‐H‐133, Ookayama, Meguro‐ku, Tokyo 152‐8552, JapanDepartment of Organic Materials and Macromolecules, International Research Center of Macromolecular Science, Tokyo Institute of Technology, 2‐12‐1‐H‐133, Ookayama, Meguro‐ku, Tokyo 152‐8552, Japan;2. Department of Organic Materials and Macromolecules, International Research Center of Macromolecular Science, Tokyo Institute of Technology, 2‐12‐1‐H‐133, Ookayama, Meguro‐ku, Tokyo 152‐8552, Japan |
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| Abstract: | Combination of coordination polymerization and atom transfer radical polymerization (ATRP) was applied to a novel synthesis of rod‐coil block copolymers. The procedure included the following steps: (1) monoesterification reaction of ethylene glycol with 2‐bromoisobutyryl bromide yielded a α‐bromo, ω‐hydroxy bifunctional initiator, (2) CpTiCl3 (bifunctional initiator) catalyst was prepared from a mixture of trichlorocyclopentadienyl titanium (CpTiCl3) and bifunctional initiator. Coordination polymerization of n‐butyl isocyanate initiated by such catalyst provided a well‐defined macroinitiator, poly(n‐butyl isocyanate)‐Br (PBIC‐Br), and (3) ATRP method of vinyl monomers using PBIC‐Br provided rod (PBIC)‐coil block copolymers. © 2007 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45: 4037–4042, 2007 |
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| Keywords: | ATRP block copolymer coordination polymerization macroinitiator nanotechnology rod‐coil block copolymer |
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