Water Soluble Fluorescent Carbon Nanodots from Biosource for Cells Imaging

Figure 4

(a) Absorption spectra of wsCNDs; (b) tunable emission spectra of wsCNDs in the range of 340–620 nm excitation wavelength on a continuous increment of 20 nm; (c) variation in emissions center with excitation, was efficiently showing a bathochromic shift when move from one to the next with 20 nm increment to track the shift in the PL spectrum with , the data points were gets from panel (b); (d) photoluminescent excitation spectrum on 460 nm emission wavelength. Optical images of wsCNDs at (e) 488 nm (green) and (f) 561 nm (red) band pass filters, respectively.

(a)

(b)

(c)

(d)

(e)

(f)