Fig. 3.

(a) Normalized absorption of DBF in THF and SiNPs in water, (b) normalized excitation spectra of DBF in THF and SiNPs in water, the maximum excitation of SNP-NH₂ and SNP-NHFA were normalized to 0.1 (Em: 490 nm), (c) normalized fluorescence emission spectra of DBF in THF and SiNPs in water, the maximum fluorescence of SNP-NH₂ and SNP-NHFA were normalized to 0.1 (Ex: 410 nm), and (d) fluorescence anisotropy of DBF in THF and SiNPs in water (Em: 490 nm).