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. 2022 Oct 19;13:6193. doi: 10.1038/s41467-022-33999-y

Fig. 4. Bio-specific photoluminescence and optical waveguide phenomena of Alq3 microparticles upon complementary DNA-DNA hybridization.

Fig. 4

a Schematic illustration for observing bio-recognitive photonics of Alq3 doped with DNAs. b PL spectra of Alq3/DNAs (T20, A20, G20, and C20) after treatment with corresponding complementary DNAs (excitation at 365 nm). The inset chart represents the ratio of PL enhancement compared to PL intensity before complementary DNA treatment (see details in Supplementary Fig. 10). c Normalized ratio of PL enhancement as a function of the normalized concentration of doped DNA-Cy3 molecules. Concentration is derived from the fluorescence intensity of doped DNA-Cy3 molecules. d Schematic illustration for measuring optical waveguide phenomena of Alq3 microparticles doped with DNAs. e Normalized intensity of waveguided PL from Alq3/DNAs (T20, A20, G20, and C20) microparticles after treatment with corresponding complementary DNAs. f Optical loss coefficient of each Alq3 microparticle, calculated by exponentially fitting the emission intensities with respect to the propagation distance. Error bars in (e) represent standard deviation. Source data are provided as a Source Data file.