Optical Biomedical Diagnostics: Sensors with Optical Response Based on Two-Photon Excited Luminescent Dyes for Biomolecules Detection

Figure 8

The dependence of optical density (obtained from optical absorption spectra) on irradiation time of dimer dye DBos-24: (a) free dye, (b) bond to the DNA (1—at 23100 cm⁻¹, 2—at 18500 cm⁻¹, 3—the DNA maximum at 260 nm).

(a)

(b)