A selective naked-eye chemosensor derived from 2-methoxybenzylamine and 2,3-dihydroxybenzaldehyde - synthesis, spectral characterization and electrochemistry of its bis-bidentates Schiff bases metal complexes
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Título: | A selective naked-eye chemosensor derived from 2-methoxybenzylamine and 2,3-dihydroxybenzaldehyde - synthesis, spectral characterization and electrochemistry of its bis-bidentates Schiff bases metal complexes |
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Autor/es: | Aggoun, Djouhra | Ourari, Ali | Ruiz-Rosas, Ramiro | Morallon, Emilia |
Grupo/s de investigación o GITE: | Materiales Carbonosos y Medio Ambiente | Electrocatálisis y Electroquímica de Polímeros |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | N,O donors | Spectral studies | Colorimetric sensor | Solvatochromic behavior | Transition metal complexes | Cyclic voltammetry |
Área/s de conocimiento: | Química Inorgánica | Química Física |
Fecha de publicación: | 5-sep-2017 |
Editor: | Elsevier |
Cita bibliográfica: | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 2017, 184: 299-307. doi:10.1016/j.saa.2017.05.022 |
Resumen: | A new colorimetric receptor HL, acting as a bidentate Schiff base ligand, has been synthesized by condensation of 2-methoxybenzylamine on 2,3-dihydroxybenzaldehyde in a methanolic solution. Interestingly, this chelating agent can selectively detect Cu2 +, Co2 +, Fe2 + and Fe3 + ions with a simple and an easy-to-make, well defined naked-eye visible color changes in two different solvents like acetonitrile and methanol. This bidentate ligand coordinates three metal ions of Co(II), Cu(II) and Fe(II) via nitrogen and oxygen atoms. The molecular structures of the synthesized compounds were elucidated by various physicochemical properties such as the elemental analysis, FT-IR, HNMR, UV–Vis and the Mass spectrometry. The resulting general formulae [M(L)2·H2O] (M(II) = Cu, Fe, Co) are proposed as mononuclear complexes. The solvatochromism properties of these compounds were studied with their absorption spectra using different solvents as methanol (MeOH), acetonitrile (AN), tetrahydrofuran (THF), dimethylformamid (DMF), dimethylsulfoxid (DMSO) and dichloromethane (DC). The Electrochemical behavior of copper complex was explored in DMF solutions by cyclic voltammetry (CV) with two working electrodes: glassy carbon (GC) and platinum electrode (Pt). This study reveals that copper complex shows successively two redox systems as CuIII/II and CuII/I. The FeIII/II and CoII/I redox systems have also been studied in DMF and DMSO media. |
Patrocinador/es: | The authors would like to thank the Algerian Ministère de l'Enseignement Supérieur et de la Recherche Scientifique et la Direction générale de la Recherche and the Ministerio de Economía y Competitividad for their undeniable financial support (MAT2016-76595-R). RRR thanks The Spanish Ministry of Economy and Competitiveness (MINECO) for a “Juan de la Cierva” contract (JCI-2012-12664). |
URI: | http://hdl.handle.net/10045/66110 |
ISSN: | 1386-1425 (Print) | 1873-3557 (Online) |
DOI: | 10.1016/j.saa.2017.05.022 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2017 Elsevier B.V. |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/j.saa.2017.05.022 |
Aparece en las colecciones: | INV - MCMA - Artículos de Revistas INV - GEPE - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2017_Djouhra_etal_SpectrochimActaA_final.pdf | Versión final (acceso restringido) | 2,06 MB | Adobe PDF | Abrir Solicitar una copia |
2017_Djouhra_etal_SpectrochimActaA_accepted.pdf | Accepted Manuscript (acceso abierto) | 1,06 MB | Adobe PDF | Abrir Vista previa |
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