Figure 5.

A composite fluorescence spectrum of 15 μM dT₄C₄T₄ with 90 μM Ag⁺ and 90 μM BH₄⁻ in a pH = 10.5 buffer. The emission wavelengths are on the bottom axis and the excitation wavelengths are on the right axis. The spectra were acquired 16 hrs after adding BH₄⁻. The inset excitation spectrum was acquired using λ_em = 475 nm. The excitation maximum is 370 nm, and weaker transitions are observed at 292 nm and 316 nm.