Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/18014Registo completo
| Campo DC | Valor | Idioma |
|---|---|---|
| dc.contributor.author | Oliveira, Elisabete | - |
| dc.contributor.author | Baptista, Rosa M. F. | - |
| dc.contributor.author | Costa, Susana P. G. | - |
| dc.contributor.author | Raposo, M. Manuela M. | - |
| dc.contributor.author | Lodeiro, Carlos | - |
| dc.date.accessioned | 2012-03-21T19:05:11Z | - |
| dc.date.available | 2012-03-21T19:05:11Z | - |
| dc.date.issued | 2010 | - |
| dc.identifier.issn | 0020-1669 | por |
| dc.identifier.uri | https://hdl.handle.net/1822/18014 | - |
| dc.description.abstract | Three new compounds bearing furyl, aryl or thienyl moieties linked to an imidazo-crown ether system (1, 2 and 3) were synthesized and fully characterized by elemental analysis, infrared, absorption and emission spectroscopy, X-ray crystal diffraction, and MALDI-TOF-MS spectrometry. The interaction towards metal ions (Ca2+, Cu2+, Ni2+ and Hg2+) and F- has been explored in solution by absorption and fluorescence spectroscopy. Mononuclear and binuclear metal complexes using Cu2+ or Hg2+ as metal centers have been synthesized and characterized. Compounds 2 and 3 show a noticeable enhancement of the fluorescence intensity in the presence of Ca2+ and Cu2+ ions. Moreover compound 3 presents a dual sensory detection way by the modification of the fluorimetric and colorimetric properties in the presence of Cu2+ or Hg2+. The EPR studies in frozen solution and in microcrystalline state of the dinuclear Cu(II)2 complex revealed the presence of an unique Cu2+ type. | por |
| dc.description.sponsorship | Fundação para a Ciência e a Tecnologia (FCT) | por |
| dc.description.sponsorship | We are indebted to InOU Uvigo by project K914 122P 64702 (Spain) and FCT-Portugal by project PTDC/QUI/66250/2006 for financial support. The NMR spectrometers are part of the National NMR Network and were purchased in the framework of the National Programme for Scientific Re-equipment, contract REDE/1517/RMN/2005, with funds from POCI 2010 (FEDER) and FCT-Portugal. C.L. thanks Xunta de Galicia, Spain, for the Isidro Parga Pondal Research Program. E.O. and R.B. thank FC-MCTES (Portugal) by their PhD grants SFRH/BD/35905/2007 and SFRH/BD/36396/2007, respectively. We are gratefull to Dr. Cristina Nunez and Dr. Pablo Gonzalez from the REQUIMTE, Universidade NOVA de Lisboa, Portugal, for their important help with the crystallographic and EPR data, respectively, and Dr. Jose Luis Capelo from the University of Vigo, Spain, for the help with the MALDI-TOF-MS spectra. | - |
| dc.language.iso | eng | por |
| dc.publisher | American Chemical Society | por |
| dc.relation | info:eu-repo/grantAgreement/FCT/5876-PPCDTI/66250/PT | - |
| dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F35905%2F2007/PT | - |
| dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F36396%2F2007/PT | - |
| dc.rights | openAccess | por |
| dc.subject | Fluorescent chemosensors | por |
| dc.subject | Thiophene | por |
| dc.subject | Furan | por |
| dc.subject | Imidazole | por |
| dc.subject | Azacrown ethers | por |
| dc.subject | Sensors for Ca2+ | por |
| dc.subject | Sensors for Cu2+ | por |
| dc.subject | Sensors for Ni2+ | por |
| dc.subject | Sensors for Hg2+ | por |
| dc.subject | Synthesis | por |
| dc.title | Exploring the emissive properties of new azacrown compounds bearing aryl, furyl or thienyl moieties: a special case of chelation enhancement of fluorescence upon interaction with Ca2+, Cu2+ or Ni2+ | por |
| dc.type | article | por |
| dc.peerreviewed | yes | por |
| dc.relation.publisherversion | http://pubs.acs.org/doi/pdfplus/10.1021/ic101095y | por |
| sdum.publicationstatus | published | por |
| oaire.citationStartPage | 10847 | por |
| oaire.citationEndPage | 10857 | por |
| oaire.citationIssue | 23 | por |
| oaire.citationTitle | Inorganic Chemistry | por |
| oaire.citationVolume | 49 | por |
| dc.identifier.doi | 10.1021/ic101095y | por |
| dc.identifier.pmid | 21049907 | por |
| dc.subject.wos | Science & Technology | por |
| sdum.journal | Inorganic Chemistry | por |
| Aparece nas coleções: | CDQuim - Artigos (Papers) | |
Ficheiros deste registo:
| Ficheiro | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| InorgChem 2010.pdf | Documento principal | 2,9 MB | Adobe PDF | Ver/Abrir |
