Synthesis and Study of a Novel Visualized Iron Ion Probe

In this study, we synthesized probe R using Rhodamine 6G as the chromophore. The structure of probe R was characterized, and its probe properties and reaction mechanism were studied. The experimental results could be observed with the naked eye, and probe R could detect iron ions effectively. The LOD of UV-vis absorption determination was 6.4 μM, which was significantly lower than the international sanitation standard for drinking water. Therefore, R could be used as a new visual metal ion probe to determine Fe3+ content. Joband#39;s plot experiment demonstrated that the response of probe R to Fe3+ was based on complex formation with a ratio between R and Fe3+ of 2:1.