Figure 5

Maximum fluorescence emission of Rh-UTES after metal capture. Maximum fluorescence emission of Rh-UTES (10 μM in ACN) derivative upon addition of 100 μM of Ag⁺, Hg²⁺, Ca²⁺, Pb²⁺, Li²⁺, Zn²⁺, Fe²⁺, Ni²⁺, K⁺, Cu²⁺, Na⁺, and Mn²⁺, respectively. The emission spectra were recorded under identical experimental conditions at excitation wavelength of 485 nm.