期刊
CHEMICAL SCIENCE
卷 5, 期 1, 页码 247-252出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3sc52481g
关键词
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资金
- National Basic Research Program [2013CB834502]
- National Natural Science Foundation of China [91027006, 21125417]
- Fundamental Research Funds for the Central Universities [2012QNA3013]
- Alexander von Humboldt Fellowship
Based on the pillar[5]arene/imidazolium recognition motif, a [2]rotaxane was effectively prepared. Solvent/temperature triggered molecular motions of the pillar[5] arene ring on the imidazolium axle were successfully realized. By comparison of proton NMR spectra of the [2] rotaxane in different solvents, we found that if we increased the solvent polarity, the pillar[5] arene ring gradually moved away from the imidazolium part. In DMSO, we also could adjust the binding site of the pillar[5] arene ring by changing the temperature. Furthermore, in DMSO, the [2] rotaxane self-assembled to form a supramolecular gel, which showed multiple stimuli-responsiveness.
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