Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/12875
DC Field | Value | Language |
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dc.contributor.author | Clares, M. Paz | - |
dc.contributor.author | Aguilar, Juan | - |
dc.contributor.author | Aucejo, Ricardo | - |
dc.contributor.author | Lodeiro, Carlos | - |
dc.contributor.author | Albelda, M. Teresa | - |
dc.contributor.author | Pina, Fernando | - |
dc.contributor.author | Lima, J. C. | - |
dc.contributor.author | Parola, A. Jorge | - |
dc.contributor.author | Pina, João: | - |
dc.date.accessioned | 2010-03-12T12:47:50Z | - |
dc.date.available | 2010-03-12T12:47:50Z | - |
dc.date.issued | 2004 | - |
dc.identifier.citation | Inorganic Chemistry. 43:19 (2004) 6114-6122 | en_US |
dc.identifier.issn | 0020-1669 | - |
dc.identifier.uri | https://hdl.handle.net/10316/12875 | - |
dc.description.abstract | The 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 moiety | en_US |
dc.language.iso | eng | en_US |
dc.publisher | American Chemical Society | en_US |
dc.rights | openAccess | en_US |
dc.title | Synthesis and H+, Cu2+, and Zn2+ Coordination Behavior of a Bis(fluorophoric) Bibrachial Lariat Aza-Crown | en_US |
dc.type | article | en_US |
uc.controloAutoridade | Sim | - |
item.fulltext | Com Texto completo | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.openairetype | article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
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Synthesis and H+, Cu2+.pdf | 192.64 kB | Adobe PDF | View/Open |
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