A new approach with simple, fast and most versatile is proposed for producing a promising fluorescence material from ammonium citrate. The synthetic procedure was performed using solid-phase reaction strategy at an extremely low temperature. The product were studied by XRD pattern, TEM image, FT-IR spectra, and XPS analysis. The prepared product possess nanoscale, water soluble, quantum yield of approximately 27%. Based on the quenching effect on fluorescence emission, the mercuric ions could be detected with a limit of detection of 0.06 ?M with high selectivity.
The quenching effect of prepared materials by Hg+ ions (left); Emission and absorption spectra of prepared fluorescence material (right).