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dc.contributor.authorHo, I-Tingen_US
dc.contributor.authorLai, Ting-Lingen_US
dc.contributor.authorWu, Ren-Tsungen_US
dc.contributor.authorTsai, Ming-Tsungen_US
dc.contributor.authorWu, Chun-Mingen_US
dc.contributor.authorLee, Gene-Hsiangen_US
dc.contributor.authorChung, Wen-Shengen_US
dc.date.accessioned2014-12-08T15:28:55Z-
dc.date.available2014-12-08T15:28:55Z-
dc.date.issued2012en_US
dc.identifier.issn0003-2654en_US
dc.identifier.urihttp://hdl.handle.net/11536/20897-
dc.identifier.urihttp://dx.doi.org/10.1039/c2an36076den_US
dc.description.abstractA series of triazolyl coumarin derivatives L1-L4, with and without spacer groups between the coumarin and the triazole groups, were synthesized as fluorescent sensors to study their binding ability and selectivity toward metal ions. Ligand L3, which contains an acetyl linker between the triazole and the coumarin, exhibited a high selectivity toward Hg2+ in polar protic solvents MeOH-CHCl3 (9 : 1, v/v) with fluorescent enhancement, furthermore, it was found to bind two Hg2+ at a high concentration (>12.5 mM) of Hg(ClO4)(2). In contrast, L4, in which position 4 of the triazole unit was replaced by a benzyl group instead of the 4-tert-butylphenoxymethyl group used in L1-L3, showed a binding stoichiometry toward only one Hg2+. On the basis of the fluorescent sensing, IR, and H-1 NMR titration results of ligands L1-L4, we proposed that not only the acetyl C=O but also the ether group of the 4-tert-butylphenoxymethyl of L3 assisted the triazole nitrogen atoms in the complexation of Hg2+ to form a 1 : 2 complex (L3 center dot(Hg2+)(2)).en_US
dc.language.isoen_USen_US
dc.titleDesign and synthesis of triazolyl coumarins as Hg2+ selective fluorescent chemosensorsen_US
dc.typeArticleen_US
dc.identifier.doi10.1039/c2an36076den_US
dc.identifier.journalANALYSTen_US
dc.citation.volume137en_US
dc.citation.issue24en_US
dc.citation.spage5770en_US
dc.citation.epage5776en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000311962100013-
dc.citation.woscount10-
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