| SYNTHESES AND CHARACTERIZATIONS OF HYPERBRANCHED POLYPHENYLENES |
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| 作者姓名： | 唐本忠 |
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| 作者单位： | Institute of |
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| 基金项目： | This work was supported by the Research Grants Council of Hong Kong (Nos. 603304, 604903 and HKUST6085/02P). |
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| 摘 要： | Hyperbranched polymers have attracted much attention over the past decade because of the expectation that theirunique molecular shape, branching pattern and surface functionality may impart unusual properties. Methods forthe synthesis of hyperbranched polymers are, however, rather limited. Cyclotrimerization of alkynes to aromaticrings is a century-old reaction. Although chemists have intensively investigated cyclotrimerization of variousdiynes in the last century, their attention was mainly f…
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| 收稿时间： | 2004-09-09 |
| 修稿时间： | 2004-09-24 |
SYNTHESES AND CHARACTERIZATIONS OF HYPERBRANCHED POLYPHENYLENES |
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| Han Peng,Hong-chen Dong,Yu-ping Dong,De-min Jia,Ben-zhong Tang.SYNTHESES AND CHARACTERIZATIONS OF HYPERBRANCHED POLYPHENYLENES[J].Chinese Journal of Polymer Science,2004,0(6):501-503. |
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| Authors: | Han Peng Hong-chen Dong Yu-ping Dong De-min Jia Ben-zhong Tang |
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| Institution: | Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China |
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| Abstract: | New hyperbranched polyphenylenes with high molecular weights are synthesized by the copolycyclotrimerizations of 1,4-diethynylbenzene (I) with phenylacetylene (A), 1-octyne (B), and 1-dodecyne (C) catalyzed by TaCl5-Ph4Sn. The polymers are completely soluble in common solvents such as toluene, THF, chloroform, and dichloromethane. The polymers are characterized by spectroscopic methods and all of the polymers give satisfactory analysis data corresponding to their expected molecular structures. |
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| Keywords: | Alkyne polycyclotrimerization Hyperbranched polymers Polyphenylenes |
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