| Specific supramolecular interactions between Zn(2+)-salophen complexes and biologically relevant anions. | |
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MedLine Citation:
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PMID: 20507104 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Recognition of inorganic phosphates PO(4)(3-), P(2)O(7)(4-), and P(3)O(10)(5-) and nucleotides AMP(2-), ADP(3-), and ATP(4-) by Zn(2+)-salophen complexes 1 and 2 in ethanol was investigated by different spectroscopic techniques. (31)P NMR and mass spectrometry showed that anions of both series are bound by 1 and 2, while absorption and emission studies revealed that only nucleotides produce relevant changes in the spectral properties of the two hosts. (1)H NMR studies proved that the adenine aromatic group is involved in the complexation, thus pointing out the role of supramolecular ditopic receptors played by salophen derivatives toward this class of biologically relevant substrates. The lifetime of the photogenerated triplet state of the Zn(2+)-salophen compounds was measured by nanosecond laser flash photolysis, and the observed changes upon increasing the concentration of nucleotides allowed the identification of the formation of a 1:0.5 host/guest intermediate complex additionally to the formation of a 1:1 complex. |
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Authors:
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Manoli Cano; Laura Rodríguez; João Carlos Lima; Fernando Pina; Antonella Dalla Cort; Chiara Pasquini; Luca Schiaffino |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Inorganic chemistry Volume: 48 ISSN: 1520-510X ISO Abbreviation: Inorg Chem Publication Date: 2009 Jul |
Date Detail:
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Created Date: 2010-05-28 Completed Date: 2010-08-24 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0366543 Medline TA: Inorg Chem Country: United States |
Other Details:
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Languages: eng Pagination: 6229-35 Citation Subset: IM |
Affiliation:
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REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Monte de Caparica, Portugal. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adenine Nucleotides
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chemistry* Anions Magnetic Resonance Spectroscopy Models, Molecular Salicylic Acids / chemistry* Spectrometry, Mass, Electrospray Ionization Spectrophotometry, Ultraviolet Zinc / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Adenine Nucleotides; 0/Anions; 0/Salicylic Acids; 118-57-0/salophen; 7440-66-6/Zinc |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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