Theoretical and experimental studies on the fluorescence properties of aluminum(III), cadmium(II), zinc(II), and copper(II) complexes of substituted 8-hydroxyquinoline
Fifty-five 8-hydroxyquinoline (8-HQ) derivatives are synthesized and the corresponding aluminum(III), cadmium(II), copper(II), and zinc(II) metal complexes are prepared and their fluorescent activi...
Fluorescence in complexes based on quinolines-derivatives: a search for better fluorescent probes
作者:Carolina Z.P. Mecca、Fernando L.A. Fonseca、Izilda A. Bagatin
DOI:10.1016/j.saa.2016.06.006
日期:2016.11
Quinoline-derived fluorescent complexes were designed; synthesized by the reaction of 5-nitro-8-hydroxyquinoline and 5-chloro-8-hydroxyquinoline with Al(3+), Mg(2+), Zn(2+), and Cd(2+) salts (1-8); and characterized. The (1)H NMR spectra of complexes 1 and 5, containing Al(3+), were consistent with an octahedral structure having approximate D3 symmetry, and the results supported the favored facial
Understanding M–ligand bonding and mer-/fac-isomerism in tris(8-hydroxyquinolinate) metallic complexes
作者:Carlos F. R. A. C. Lima、Ricardo J. S. Taveira、José C. S. Costa、Ana M. Fernandes、André Melo、Artur M. S. Silva、Luís M. N. B. F. Santos
DOI:10.1039/c6cp02608g
日期:——
8-hydroxyquinoline ligand in different positions, were prepared. The mer-/fac-isomerism in Mq3 was explored by FTIR and NMR spectroscopy, evidencing that, irrespective of the substituent, mer- and fac-are the most stable molecular configurations of Al(III) and In(III) complexes, respectively. The relative M–ligand bond dissociation energies were evaluated experimentally by electrospray ionization tandem mass spectrometry
By adding electrondonating (EDG) and withdrawinggroups (EWG) to the Tris-(8-hydroxyquinoline) aluminum (Alq3) molecule, the emission color can be tuned. In this study the effect of EDG and EWG on the morphology and optical properties of Alq3 were investigated. Alq3 powders was synthesized with an EDG (–CH3) substituted at positions 5 and 7 ((5,7-dimethyl-8-hydroxyquinoline) aluminum) and EWG (–Cl)
A method for making metal (8-quinolinolate) complexes from air and moisture stable reagents is described. For example, the making of aluminum tris(quinolinolates), such as tris(8-hydroxyquinolinato), from aluminum (III) carboxylates, such as aluminum lactate and aluminum stearate, is described. Examples of bis and tris metal (8-quinolinolates) as well as single and mixed ligand complexes are given.