Original Papers
Fluorescent Character of Cu(I/II) Complexes with Bisquinoline-based Ligands and Fluorometric Detection of Reductants
2015 Volume 31 Issue 3 Pages 185-189
Details
2015 Volume 31 Issue 3 Pages 185-189
The fluorescence ligands N,N′-bis(2-methylquinolyl)dimethylethylenediamine (BQDMEN) and N,N′-bis(2-methylquinolyl)dimethyl-1,3-propanediamine (BQDMPN) were synthesized. [Cu(II)(bqdmen)]2+ and [Cu(II)(bqdmpn)]2+ were prepared, and their reduction to [Cu(I)(bqdmen)]+ and [Cu(I)(bqdmpn)]+ was confirmed by the observed UV-Vis spectral change. Then, the fluorescence of [Cu(I/II)(bqdmen)]+/2+ and [Cu(I/II)(bqdmpn)]+/2+ in aqueous solution was characterized; [Cu(I)(bqdmen)]+ and [Cu(I)(bqdmpn)]+ were found to fluoresce in aqueous solution, whereas the fluorescence of [Cu(II)(bqdmen)]2+ and [Cu(II)(bqdmpn)]2+ was completely quenched. On the basis of these findings, fluorometric detection of reductants with a flow-injection system using a [Cu(II)(bqdmen)]2+ or [Cu(II)(bqdmpn)]2+ solution as a carrier was explored.
