Fig. 1From: Biocompatible carbonized iodine-doped dots for contrast-enhanced CT imagingCharacterization of IDC a UV–Vis spectra of lactobionic acid, Iohexol, and IDC. b The full-scan XPS spectrum of IDC. c C 1 s, d O 1 s, e N 1 s, and f I 3d XPS spectra of IDC. g FTIR spectra of iohexol, lactobionic acid, and IDCBack to article page