A hyperbranched,rotaxane‐type mechanically interlocked polymer |
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| Authors: | Shijun Li Bo Zheng Jianzhuang Chen Shengyi Dong Zhi Ma Feihe Huang Harry W Gibson |
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| Institution: | 1. Department of Chemistry, Zhejiang University, Hangzhou 310027, People's Republic of China;2. College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, People's Republic of China;3. Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China;4. Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061‐0212 |
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| Abstract: | Based on the dibenzo‐24‐crown‐8/1,2‐bis(pyridinium)ethane recognition motif, a hyperbranched mechanically interlocked polymer was prepared by polyesterification of an easily available dynamic trifunctional AB2 pseudorotaxane monomer. It was characterized by various techniques including 1H NMR, COSY, NOESY, GPC, viscosity, TGA, dynamic laser light scattering, AFM, and SEM. Its GPC Mn was determined to be 191 kDa with polydispersity 1.7 and its hydrodynamic diameter in a dilute solution in acetone was about 70 nm. This measured Mn value corresponds to about 93 repeating units. The study reported here presents not only a new polymer topology but also a novel and convenient way to prepare mechanically interlocked polymers. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 4067–4073, 2010 |
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| Keywords: | host‐guest systems hyperbranched mechanically interlocked polymer polyrotaxanes rotaxane self‐assembly supramolecular structures |
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