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Fig. 1 | Nanoscale Research Letters

Fig. 1

From: The Cost-Effective Preparation of Green Fluorescent Carbon Dots for Bioimaging and Enhanced Intracellular Drug Delivery

Fig. 1

Characterizations of CDs. a TEM images of CDs (inset, high-resolution TEM images). b Size distribution of CDs. c UV-vis absorption of DOX, CDs, and DOX-CDs and inset pictures show the CDs under natural light and UV light. d FTIR spectra of CDs and e The PL emission of CDs with excitation wavelengths from 340 nm to 440 nm in 20 nm increments. f XPS spectrum of CDs

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