Fig. 4: Mechanism for the evolution of the TAC passivation nanolayer.
From: A ligand oxidation structure-adaptive strategy for copper passivation
Cross-sectional HR-TEM images of a Cu-TAC0.1–0.5, b Cu-TAC0.1–2, c Cu-TAC0.1–8, and d Cu-TAC0.1–24; and e Cu-TAC0.01–0.5, f Cu-TAC0.1–2, g Cu-TAC0.1–8, and h Cu-TAC0.1–24 after 0.1 M NaOH treatment. i Water contact angles on the surfaces of bare Cu, and Cu-TAC0.1–12 before and after exposure in 0.1 M NaOH. The error bars in i reflect the standard deviations from three individual experiments. j Frontier molecular orbital diagrams of the initial and oxidized states of TAC. k Electrostatic potential distributions of TAC and oxidized TAC. l Adsorption configuration of isolated oxidized TAC on Cu(110).
