| Flipping the switch on chloride concentrations with a light-active foldamer. | |
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MedLine Citation:
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PMID: 20799723 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Here we demonstrate a bioinspired system where light stimulus is used to trigger the wavelength-dependent release and then reuptake of chloride ions in nonaqueous solutions. A chiral aryl-triazole foldamer with two azobenzene end groups has been synthesized to define a folded binding pocket for chloride ions that unfolds with UV light to liberate the chloride. The trans-dominated helical foldamer becomes less stable upon photoisomerization to the cis forms. Simultaneously, the observed binding affinity shows an ∼10-fold reduction from K = 3000 M(-1) (MeCN, 298 K). Control of chloride levels using light is demonstrated by switching the conductivity of an electrolyte solution up and down. |
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Authors:
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Yuran Hua; Amar H Flood |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Journal of the American Chemical Society Volume: 132 ISSN: 1520-5126 ISO Abbreviation: J. Am. Chem. Soc. Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-09-15 Completed Date: 2011-01-04 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503056 Medline TA: J Am Chem Soc Country: United States |
Other Details:
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Languages: eng Pagination: 12838-40 Citation Subset: IM |
Affiliation:
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Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Biomimetics Chlorides / chemistry* Light* Models, Molecular Molecular Conformation / radiation effects* Photochemical Processes Polymers / chemistry* Solvents / chemistry |
| Chemical | |
Reg. No./Substance:
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0/Chlorides; 0/Polymers; 0/Solvents |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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