| 초록 |
Rhodamine fluorophore has attracted considerable interest from chemists on account of its strong emission. A lot of Rhodamine-derivatives have been developed for the detection of metal ions. For the selective recognition of a heavy metal ions, a sulfur-based functional group and oxygen-based functional group were considered during Rhodamine derivation. Metal coordination opens the ring of Rhodamine-derivative to change absorptive property. The ring opening and ring closure reactions are reversible and controllable with several coordination conditions. We examine the coordination effect according to the number of heteroatom (O, S) bound to Rhodamine. Heterocycles such as 1,3-dioxolane and 1,3-dithiolane are expected to form the better metal coordination kinetically, compared to the corresponding acyclic system. Fluorescent silica nanoparticles were prepared using NH₂-rich silica surface. |
