Cucurbit[7]uril moving on side chains of polypseudorotaxanes: Synthesis,characterization, and properties |
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| Authors: | Hui Yang Jingcheng Hao Yebang Tan |
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| Institution: | 1. School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China;2. Key Laboratory of Special Functional Aggregated Materials, Shandong University, Ministry of Education, Jinan 250100, People's Republic of China;3. The Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, People's Republic of China |
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| Abstract: | Novel side chain polypseudorotaxanes with cucurbit7]uril (CB7]) threaded onto the side chains are synthesized from a water‐soluble polymer and CB7] in water by simple stirring at room temperature. CB7] beads could move from the hexyl groups to the benzyl and a part of viologen units in the side chains of polymer when the molar ratio of CB7] to the monomer reaches from 1 to 2 as shown by 1H NMR studies, and it is considered that the hydrophobic and charge‐dipole interactions of CB7] are the driving forces. The sizes of the polypseudorotaxanes with different molar ratio of CB7] to 4VBVHeP in aqueous solution increase with increasing the molar ratio of CB7] to 4VBVHeP as found by DLS and resonance light scattering, while the typical cyclic voltammograms and UV–vis data indicate that CB7] are not threaded in the viologen units of P4VBVHeP, and the oxidation reduction characteristic of the polymer is remarkably affected by the addition of CB7]. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011 |
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| Keywords: | cucurbit[7]uril polyrotaxanes self‐assembly water‐soluble polymer |
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