Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/12875
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dc.contributor.authorClares, M. Paz-
dc.contributor.authorAguilar, Juan-
dc.contributor.authorAucejo, Ricardo-
dc.contributor.authorLodeiro, Carlos-
dc.contributor.authorAlbelda, M. Teresa-
dc.contributor.authorPina, Fernando-
dc.contributor.authorLima, J. C.-
dc.contributor.authorParola, A. Jorge-
dc.contributor.authorPina, João:-
dc.date.accessioned2010-03-12T12:47:50Z-
dc.date.available2010-03-12T12:47:50Z-
dc.date.issued2004-
dc.identifier.citationInorganic Chemistry. 43:19 (2004) 6114-6122en_US
dc.identifier.issn0020-1669-
dc.identifier.urihttp://hdl.handle.net/10316/12875-
dc.description.abstractThe synthesis, protonation behavior, and Cu2+ and Zn2+ coordination chemistry of the novel bibrachial aza lariat ether (naphthalen-1-ylmethyl)[2-(20-{2-[(naphthalen-1-ylmethyl)amino]ethyl}-3,6,9,17,20,23,29,30-octaazatricyclo[23.3.1.1*11,15*]triaconta-1(29),11(30),12,14,25,27-hexaen-6-yl)ethyl]amine (L) are discussed. The macrocycle, which has two aminoethyl naphthyl moieties symmetrically appended to a 2:2 azapyridinophane structure, displays, in the pH range 2−11, six protonation steps that correspond to the protonation of the secondary amino groups. Steady-state fluorescence measurements show emissions due to the monomer and to the excimer formed between the two naphthalene fragments of the macrocycle. The time-resolved fluorescence data, obtained by the time-correlated single photon counting technique, show that a significant percentage of excimer is preformed as ground-state dimers. The ligand L forms with the metal ions Cu2+ and Zn2+ mono- and dinuclear complexes in aqueous solution. The influence of metal coordination in the fluorescence emission of L is analyzed. The acid−base, coordination capabilities, and emissive behavior of L are compared with those presented by its synthetic precursor L1, which has a tripodal tris(2-aminoethyl)amine structure functionalized at one of its terminal amino groups with a naphthyl moietyen_US
dc.language.isoengen_US
dc.publisherAmerican Chemical Societyen_US
dc.rightsopenAccessen_US
dc.titleSynthesis and H+, Cu2+, and Zn2+ Coordination Behavior of a Bis(fluorophoric) Bibrachial Lariat Aza-Crownen_US
dc.typearticleen_US
uc.controloAutoridadeSim-
item.grantfulltextopen-
item.fulltextCom Texto completo-
item.openairetypearticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.languageiso639-1en-
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais
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