Synthesis and characterization of uranyl(VI) chiral Schiff-base complexes derived from salicylaldehyde and L-aminoacids
Cozaciuc, IA; Postolachi, R; Gradinaru, R; Pui, A
| HERO ID | 1534105 |
|---|---|
| In Press | No |
| Year | 2012 |
| Title | Synthesis and characterization of uranyl(VI) chiral Schiff-base complexes derived from salicylaldehyde and L-aminoacids |
| Authors | Cozaciuc, IA; Postolachi, R; Gradinaru, R; Pui, A |
| Journal | Journal of Coordination Chemistry |
| Volume | 65 |
| Issue | 12 |
| Page Numbers | 2170-2181 |
| Abstract | Complexes of uranyl(VI) (U(VI)) with tridentate ligands derived from salicylaldehyde and aminoacids are reported, bis 2-((2-hydroxybenzylidene)amino) acetic acid U(VI), UO2(SalGly)(2) (1); tri aqua 2-((2-hydroxybenzylidene)amino)propanoic acid U (VI) nitrate, [UO2(SalAla)(H2O)(3)]NO3 (2); tri aqua 3-hydroxy-2-((2-hydroxybenzylidene)amino) propanoic acid U(VI) nitrate, [UO2(SalSer)(H2O)(3)]NO3 (3); tri aqua 2-((2-hydroxybenzylidene) amino)-3-methylbutanoic acid U(VI) nitrate, [UO2(SalVal)(H2O)(3)]NO3 (4), and tri aqua 2-((2- hydroxybenzylidene)amino)-4-(methylthio)butanoic acid U(VI) nitrate, [UO2(SalMet)(H2O)(3)]NO3 (5). The characterization of the complexes was performed by electrospray mass spectroscopy, ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy, nuclear magnetic resonance, fluorescence spectroscopy, and thermal analysis. The complexes are electrolytes (1 : 1) having a molar ratio M: L = 1 : 1, except 1, which is a nonelectrolyte with a molar ratio M: L = 1 : 2. The fluorescence intensity of the complexes is more intense than uncomplexed uranyl, except 1 and 5. High fluorescence of the uranyl SalAla complex (2) was used to assess complexes- DNA interaction based on fluorescence quenching assay. The interaction of 2 with DNA was assessed by measuring the relative fluorescence quenching of the complex when nucleic acids were added. |
| Doi | 10.1080/00958972.2012.690146 |
| Wosid | WOS:000304328900011 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science WOS:000304328900011 |
| Is Public | Yes |
| Keyword | Uranyl complexes; Aminoacid Schiff-base ligands; DNA Fluorescence |