Sensitivity and Selectivity Detection Studies of Fe (III) Using Cu(I) Complex of Schiff Base Material

Abstract

The liver, bones, kidneys, teeth, and central nervous system sustain serious damage as a result of heavy metal ions entering the human food chain. In order to improve public health, new techniques must be developed for the rapid, easy, simple, reliable, low-cost, and reliable identification of toxic metal ions.Naked eye detection of hazardous metal ions with Cu (I) fluorescent properties of Cu(I) Complex of with 2, 2′-bipyridine and trans cinnamic acid were investigated. The structure of the fluorescent Cu (I) complex was characterized by conductivity measurement, elemental analysis, UV-Visible and FT-IR. The Cu (I) complex was soluble in dimethylsulfoxide, distilled water, methanol and insoluble in tetrahydrofuran. In the applications, firstly the color of the Cu(I) complex was compared with/without metal ions, and then the measurements were made in the UV-Vis spectrophotometer to exhibit selective and sensitive to Fe3+ ions in DMSO (dimethylsulfoxide) / H2O (water) (v/v, 1:1). Cu(I) complex exhibited absorbance band at 323 nm in dimethylsulfoxide. The absorbance intensity was decreased by Fe (III) and behaves as a turn-off sensor. The sensor showed high selectively and sensitivity toward Fe (III) over the other cations in dimethlsulfoxide solution. The equilibrium binding constant of Cu (I) complex with Fe (III) was 1.9x10 4 M -1 as calculated using stern –volmer equation. The limit of detection was also determined and calculated as 0.219 μM. Based on facts obtained from this study, the author suggests the Copper (I) complex response to Fe (III) rapidly and a large number of consecutive ions showed almost no obvious absorbance change during detection. Copper (I) complex could act as cost effective, selective, specific and sensor for detection of Fe (III) ions over other metal ions.