Fig. 1: Characteristics of SAMs.
From: Gypsum heterogenous nucleation pathways regulated by surface functional groups and hydrophobicity

The molecular structure and contact angles of (A1)−OH, (B1)−COOH, (C1)−NH2, (D1)−CH3, (E1)−SO3, and (F1) hybrid of NH2 and COOH groups terminated self-assembled monolayers. Pink, while, grey, yellow, and blue spheres represent oxygen, hydrogen, carbon, sulfur, nitrogen atoms, respectively. The XPS spectra of representative chemical bonds of (A2)−OH, (B2)–COOH, (C2)−NH2, (D2)−CH3, (E2)−SO3, and (F2) hybrid of NH2 and COOH groups terminated self-assembled monolayers. CPS and a.u. represent counts per second and arbitrary unit, respectively.