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Achieving Strong Positive Cooperativity through Activating Weak Non-Covalent Interactions
Ma, Yan-Long; Ke, Hua; Valkonen, Arto; Rissanen, Kari; Jiang, Wei
2018-01-15
Source PublicationANGEWANDTE CHEMIE-INTERNATIONAL EDITION
ISSN1433-7851
Volume57Issue:3Pages:709-713
AbstractPositive cooperativity achieved through activating weak non-covalent interactions is common in biological assemblies but is rarely observed in synthetic complexes. Two new molecular tubes have been synthesized and the syn isomer binds DABCO-based organic cations with high orientational selectivity. Surprisingly, the ternary complex with two hosts and one guest shows a high cooperativity factor (alpha=580), which is the highest reported for synthetic systems without involving ion-pairing interactions. The X-ray single-crystal structure revealed that the strong positive cooperativity likely originates from eight C-H center dot center dot center dot O hydrogen bonds between the two head-to-head-arranged syn tube molecules. These relatively weak hydrogen bonds were not observed in the free hosts and only emerged in the complex. Furthermore, this complex was used as a basic motif to construct a robust [2+2] cyclic assembly, thus demonstrating its potential in molecular self-assembly.
Keywordcooperativity host-guest chemistry macrocycles self-assembly supramolecular chemistry
DOI10.1002/anie.201711077
URLView the original
Indexed BySCI ; IC
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000419594700015
PublisherWILEY-V C H VERLAG GMBH
The Source to ArticleWOS
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被引频次[WOS]:21   [WOS记录]     [WOS相关记录]
Document TypeJournal article
专题University of Macau
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Ma, Yan-Long,Ke, Hua,Valkonen, Arto,et al. Achieving Strong Positive Cooperativity through Activating Weak Non-Covalent Interactions[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2018,57(3):709-713.
APA Ma, Yan-Long,Ke, Hua,Valkonen, Arto,Rissanen, Kari,&Jiang, Wei.(2018).Achieving Strong Positive Cooperativity through Activating Weak Non-Covalent Interactions.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,57(3),709-713.
MLA Ma, Yan-Long,et al."Achieving Strong Positive Cooperativity through Activating Weak Non-Covalent Interactions".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 57.3(2018):709-713.
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