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| Stable pillar [5] arene-based pseudo [1] rotaxanes formed in polar solution |
| Xuan Wu, Lei Gao, Junzhao Sun, Xiao-Yu Hu, Leyong Wang |
| Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China |
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Abstract Mono-alkyl-functionalized pillar[5] arenes P1,P2,and P3 were synthesized by click reaction,which exhibited different self-assembly behavior in polar solvent DMSO.Stable pseudo [1] rotaxane was formed by the self-complexation from P1 or P2,whereas,concentration-dependent pseudorotaxane structures were generated by P3 which bearing more flexible side chain.Interestingly,the obtained pseudo[1] rotaxanes exhibited a dynamic fast assembly process upon adding NaBF4,resulting in the formation of Na+-induced pseudorotaxanes.
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Received: 23 February 2016
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| Fund:We gratefully acknowledge the financial support from the National Natural Science Foundation of China (Nos. 21472089, 21572101), and the National Natural Science Foundation of Jiangsu (No. BK20140595). |
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Corresponding Authors:
Xiao-Yu Hu
E-mail: huxy@nju.edu.cn
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