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144-AuNPs coated with 60 aminothiophenols (top left), glutathiones (top right), cysteines (bottom left), and thiophenols (bottom right). Gold and sulphur atoms are in VDW representation (large spheres) in gold and light yellow colors respectively. The ligands are in CPK (ball-and-stick) representations colored with element names (O, red, C, cyan, N, blue, and H white).
