Synthesis of branch‐ring‐branch tadpole‐shaped [linear‐poly(ε‐caprolactone)]‐b‐[cyclic‐poly(ethylene oxide)]‐b‐ [linear‐poly(ε‐caprolactone)] by combination of glaser coupling reaction with ring‐opening polymerization |
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| Authors: | Xiaoshan Fan Tingting Tang Kun Huang Guowei Wang Junlian Huang |
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| Affiliation: | State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, People's Republic of China |
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| Abstract: | A novel amphiphilic branch‐ring‐branch tadpole‐shaped linear‐poly(ε‐caprolactone)]‐b‐cyclic‐poly(ethylene oxide)]‐b‐linear‐poly(ε‐caprolactone)] (l‐PCL)‐b‐(c‐PEO)‐b‐(l‐PCL)] was synthesized by combination of glaser coupling reaction with ring‐opening polymerization (ROP) mechanism. The self‐assembling behaviors of (l‐PCL)‐b‐(c‐PEO)‐b‐(l‐PCL) and their π‐shaped analogs of poly(ε‐caprolactone)/poly(ethylene oxide)]‐b‐poly(ethylene oxide)‐b‐poly(ε‐caprolactone)/poly(ethylene oxide) with comparable molecular weight in water were preliminarily investigated. The results showed that the micelles formed from the former took a fiber look, however, that formed from the latter took a spherical look. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012 |
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| Keywords: | glaser coupling macrocycles poly(ε ‐caprolactone) (PCL) poly(ethylene oxide) (PEO) ring‐opening polymerization synthesis tadpole shaped |
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