Findik, MukerremUcar, AsumanBingol, HalukGuler, ErsinOzcan, Emine2020-03-262020-03-2620170922-61681568-5675https://dx.doi.org/10.1007/s11164-016-2630-8https://hdl.handle.net/20.500.12395/35134A novel sensor based on acetylferrocene-containing Schiff base (ASB) was synthesized by reaction of alpha-chloroacetylferrocene and N-(salicylidene)-l-valinmethylester. The structure of the compound was characterized by using elemental analysis and Fourier-transform infrared (FT-IR), H-1 nuclear magnetic resonance (NMR), and C-13 NMR spectroscopy. Its metal-cation-sensing properties were investigated spectrofluorometrically. ASB served as selective chemosensor for Zn2+ and Cd2+ towards alkali, alkaline-earth, and various heavy-metal ions. It showed significant fluorescence enhancement for Zn2+ and Cd2+ ions, stemming from C=N isomerization and chelation-enhanced fluorescence. The binding modes of the complexes were determined to have 1:1 complexation stoichiometry, and the binding constants were calculated as (6.93 +/- 0.25) x 10(6) M-1 for ASB center dot Zn (2+) and (7.49 +/- 0.18) x 10(5) M-1 for ASB center dot Cd (2+) using the nonlinear curve-fitting method.en10.1007/s11164-016-2630-8info:eu-repo/semantics/closedAccessSchiff baseFluorescence studyCadmium ionZinc ionSelective metal ion sensorArticle431401412Q2WOS:000393595100029Q3