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|Title:||Light-controllable cucurbituril-based molecular shuttle||Authors:||Zhu, Liangliang
|Issue Date:||2012||Source:||Zhu, L., Yan, H., Wang, X.- J., & Zhao, Y. (2012). Light-Controllable Cucurbituril-Based Molecular Shuttle. The Journal of Organic Chemistry, 77(22), 10168-10175.||Series/Report no.:||The journal of organic chemistry||Abstract:||The design and construction of novel artificial molecular machines can be categorized as a currently important field of modern chemistry. In the present work, a novel photoresponsive rotaxane containing two cucurbituril (CB) rings and a dumbbell component consisting of one trans-azobenzene unit along with two viologen units was developed. Each viologen group was encircled by a CB ring with a rapid shuttling equilibration distribution extended to the trans-azobenzene unit located in the middle of the dumbbell component. Upon the trans-to-cis photoisomerization of the azobenzene unit under UV light irradiation, a shuttling restriction of the CB rings along the dumbbell component was observed. The equilibration distribution of the macrocycles on the dumbbell component can be recovered by the cis-to-trans photoisomerization of the azobenzene unit under visible light irradiation. Such a controllable shuttling process was fully characterized by 1H NMR spectroscopy and was easily indicated by fluorescent changes of the rotaxane.||URI:||https://hdl.handle.net/10356/98339
|DOI:||http://dx.doi.org/10.1021/jo301807y||Rights:||© 2012 American Chemical Society||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||SPMS Journal Articles|
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