Fig. 1: Structural characterization of CDs.
From: Electron–phonon coupling-assisted universal red luminescence of o-phenylenediamine-based carbon dots
Schematic of the fabrication (a), HRTEM (b–e), C (f), and N (g) K-edge XANES spectra, MS (h), and 1H NMR (i) of the four red emission CDs
