-H bending in main and secondary amine groups groups too
-H bending in primary and secondary amine groups groups and also bond of amine groups, groups, and appeared in the FT-IR spectra of and also the C-N the C-N bond of amine and appeared inside the FT-IR spectra of the prethe precursors S1). In S1). In and N1s spectra, spectra, we located that NGQDs include cursors (Figure (FigureXPS C1sXPS C1s and N1s we identified that NGQDs contain TP-064 Cancer aromatic aromatic sp2 C=C, sp2 C-N, sp3 carboxyl carboxyl groups, which correspond to the peaks sp2 C=C, sp2 C-N, sp3 C-N, and C-N, and groups, which correspond towards the peaks at 284.5, at 284.5, 285.7, 287.5, and (Figure 2b,c). We also We also the D band D band as well as the G 285.7, 287.five, and 288.six eV 288.six eV (Figure 2b,c). observedobserved theand the G band at -1 -1 band at -1 and 1580 cm-1, respectively, as the as the characteristic of graphene in the 1350 cm1350 cm and 1580 cm , respectively, characteristic peakspeaks of graphene from the Raman spectrum (Figure These final results indicate that the the NGQDs are composed of Raman spectrum (Figure 2d). 2d). These outcomes indicate that NGQDs are composed of hy2 hydrophobic aromatic two domains and hydrophilic functional groups like carboxylic drophobic aromatic spsp domains and hydrophilic functional groupssuch as carboxylic acid, amine groups, etc. acid, amine groups, and so forth. NGQDs show cis-4-Hydroxy-L-proline custom synthesis UV-Vis absorption peaks at 250 and 350 nm, which corresponded for the transition of aromatic sp2 C=C along with the n transition of carbonyl C=O [62], respectively, which means that NGQDs are composed of aromatic sp2 C=C domains and carbonyl groups (Figure 3a). In addition, the NGQDs emitted blue fluorescence (Em, max = 432 nm) at 365 nm excitation (Figure 3b,c). From the overall characterization data, we demonstrated that NGQDs had the characteristic properties of GQDs: the graphitic core together with the diverse functional groups plus the constructive charge necessary to interact with genes.Nanomaterials 2021, 11, 11, x FOR PEER Review Nanomaterials 2021,of five of 512Figure 2. (a) FT IR spectrum, (b,c) XPS spectra (C1s, N1s), and (d) Raman spectrum of NGQDs.NGQDs show UV-Vis absorption peaks at 250 and 350 nm, which corresponded to the transition of aromatic sp2 C=C and the n transition of carbonyl C=O [62], respectively, which means that NGQDs are composed of aromatic sp2 C=C domains and carbonyl groups (Figure 3a). Furthermore, the NGQDs emitted blue fluorescence (Em, max = 432 nm) at 365 nm excitation (Figure 3b,c). From the general characterization data, we demonstrated that NGQDs had the characteristic properties of GQDs: the graphitic core using the diverse functional groups and the good charge requiredspectrum of NGQDs. to interact with genes. Figure 2. (a) FT IR spectrum, (b,c) XPS spectra (C1s, N1s), and (d) RamanFigure 2. (a) FT-IR spectrum, (b,c) XPS spectra (C1s, N1s), and (d) Raman spectrum of NGQDs.NGQDs show UV-Vis absorption peaks at 250 and 350 nm, which corresponded towards the transition of aromatic sp2 C=C as well as the n transition of carbonyl C=O [62], respectively, which means that NGQDs are composed of aromatic sp2 C=C domains and carbonyl groups (Figure 3a). Additionally, the NGQDs emitted blue fluorescence (Em, max = 432 nm) at 365 nm excitation (Figure 3b,c). In the all round characterization data, we demonstrated that NGQDs had the characteristic properties of GQDs: the graphitic core with all the diverse functional groups plus the positive charge expected to interact with genes.Figure 3. (a) Figure three. (a) UV-visible absorption optical and (b) op.
