Structure Formation in the Wetting Layer of a Carbonyl-Functionalized Ionic Liquid on Au(111): How to Control the Functional Group?

ABSTRACT: Coating heterogeneous catalysts with ionic liquids (ILs), a strategy known as 'solid catalysts with ionic liquid layers', can fine-tune catalytic selectivity. Introducing functional groups into ILs enhances their interaction with reactants, but precise control over their positioning is crucial. The structural formation in the IL wetting layer of the carbonyl-functionalized IL [5-oxo-C₆C₁Im][NTf₂] on Au(111) is investigated using infrared reflection absorption spectroscopy and scanning tunneling microscopy under ultrahigh vacuum conditions, supported by density functional theory and molecular dynamics simulations. At low temperatures (<130 K), the IL forms disordered islands, which coalesce into ordered films near ambient temperature. At low coverage, the IL

SUBMITTER: Knorr L 

PROVIDER: S-EPMC12388164 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature