Figure 2.

Effect of the (A) different 15-mer DNA; (B) buffer type and pH; and (C) different poly-G DNA length on the sensitivity of Ag⁺ in promoting Tb³⁺ luminescence. These experiments used 1 µM DNA and 5 µM Tb³⁺. The buffer contained 50 mM HEPES buffer, pH 7.5 except for that in (B). The luminescence intensities were collected by exciting at 290 nm and monitoring emission at 543 nm.