| Independent Pathway Formation of Guest:Host in Host Ternary Complexes Made of Ammonium Salt, Calixarene and Cyclodextrin. | |
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MedLine Citation:
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PMID: 23134424 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The interaction between gamma-cyclodextrin and amphiphilic p-sulfonatocalix[4]-arenes was studied using NMR and isothermal titration calorimetry techniques. The results indicate that this calixarenes are able to form 1:1, 1:2 and 2:1 host-guest complexes with the cyclodextrin. The ROESY spectra suggest that the cyclodextrin binds the calixarenes trough the hydrophobic alkyl chains. p-Sulfonatocalix[4]arenes, which are traditionally used as host molecules, act as guests in the presence of gamma-cyclodextrin. However, their recognition site remains active upon complexation with the cyclodextrin, and ternary complexes can be devised. Here, we also demonstrate the formation of such complexes using tetramethylammonium chloride as a model guest. Moreover, it is also demonstrated that the recognition properties of the calixarene are unaffected upon complexation with the cyclodextrin. |
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Authors:
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Nuno Basilio; Vitor Francisco; Luis Garcia-Rio |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-11-8 |
Journal Detail:
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Title: The Journal of organic chemistry Volume: - ISSN: 1520-6904 ISO Abbreviation: J. Org. Chem. Publication Date: 2012 Nov |
Date Detail:
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Created Date: 2012-11-8 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2985193R Medline TA: J Org Chem Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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