Exploration of the interaction strength at the interface of neutral chalcogen ligands and gold surfaces.

ABSTRACT: Using dispersion-corrected density functional theory (DFT-D3), this study systematically examines the adsorption behavior of Au(XR) species (X = S, Se, Te; R = -H, -CH₃, -C₆H₁₁) on gold surfaces of different morphologies Au(111), Au(100), Au(110), Au(321), and Au(321̄). The results demonstrate that the interaction strength increases with both the chalcogen's polarizability and the steric size of the substituent (Te > Se > S and -H < -CH₃ < -C₆H₁₁). A clear relationship between surface reactivity and dispersion contribution is established: while Au(111) adsorption is governed by long-range van der Waals interactions, rougher surfaces such as Au(110) and Au(321) promote stronger chemisorption through bridge-type bonding. Notab

SUBMITTER: Garzon TA 

PROVIDER: S-EPMC12820758 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature