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Temperature-induced large amplitude conformational change in the complex of oxatub[4]arene revealed via rotaxane synthesis
Literature Information
Publication Date
2019-02-21
DOI
10.1039/C9QO00159J
Impact Factor
5.281
Authors
Dong-Hao Li, Liu-Pan Yang, Hongxin Chai, Fei Jia, Hua Ke, Wei Jiang
View Original
Abstract
Elevated temperature usually plays a destructive role in supramolecular complexes. At higher temperature, folded proteins tend to unfold and supramolecular assemblies tend to disassemble. In contrast, histidine kinases are able to perform a different function at higher temperature. This results from temperature-induced large amplitude conformational changes. However, similar phenomena have rarely been reported for synthetic receptors. Herein, we report that the conformationally adaptive oxatub[4]arene is able to show a conformational response to temperature change in the presence of an appropriate guest. By employing rotaxane synthesis, the host's conformation in the complex at different temperatures can be fixed. The resulting rotaxanes with different host conformations have been carefully characterized by using 2D NMR spectroscopy, mass spectrometry, and X-ray single crystallography.
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Source Journal
Organic Chemistry Frontiers
CiteScore:
7.8
Self-citation Rate:
8.7%
Articles per Year:
724
Organic Chemistry Frontiers publishes high-quality research from across organic chemistry. Emphases are placed on studies that make significant contributions to the field of organic chemistry by reporting either new or significantly improved protocols or methodologies. Topics include, but are not limited to the following: Organic synthesis Development of synthetic methodologies Catalysis Natural products Functional organic materials Supramolecular and macromolecular chemistry Physical and computational organic chemistry
Recommended Compounds
2-Methyl-2-propanyl 5-methyl-3-phenyl-1,2-oxazole-4-carboxylate
CAS Number:
211429-79-7
Molecular Formula:
C15H17NO3
5,10,15,20-tetrakis(4-boronic acid pinacol ester phenyl) porphyrin
CAS Number:
1332748-00-1
Molecular Formula:
C68H74B4N4O8
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