Figure 2 | Scientific Reports

Figure 2

From: Fluorescent polydopamine nanoparticles as a probe for zebrafish sensory hair cells targeted in vivo imaging

Figure 2

(a and b) Transmission electron microscopy (TEM) images of polydopamine (PDA particles; 1a) and fluorescent polydopamine nanoparticles (FPNPs; 1b). (c) Ultraviolet-visible spectroscopy (UV-vis) absorption (black) and FPNPs (blue) in water and (d) FL emission spectra with gradually increased excitation wavelengths from 340 nm to 480 nm after dispersion of the FPNPs in water (50 μg mL−1).

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