Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/98339
Title: Light-controllable cucurbit[7]uril-based molecular shuttle
Authors: Zhu, Liangliang
Yan, Hong
Wang, Xiao-Jun
Zhao, Yanli
Issue Date: 2012
Source: Zhu, L., Yan, H., Wang, X.- J., & Zhao, Y. (2012). Light-Controllable Cucurbit[7]uril-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 [3]rotaxane containing two cucurbit[7]uril (CB[7]) 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[7] 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[7] 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 [3]rotaxane.
URI: https://hdl.handle.net/10356/98339
http://hdl.handle.net/10220/17045
DOI: 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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