Carboxylation and Decarboxylation of Aluminum Oxide Nanoparticles Using Bifunctional Carboxylic Acids and Octylamine

Figure 8

¹H-NMR profile for byproduct of the lysine NPs reacted with octylamine. Peak assignment is as follows: (ppm) 0.86 [3H, t, -CH₃], 1.3–1.7 (18H, m, aliphatic C-H), 2.75 (2H, m, -CH₂-NH₂-), and 3.28 (2H, m, -CH₂-NH-). The numbers on top of each peak represent the atom on the shown structure.