Fig. 1: Electric field-localized cations to control Au–carboxyl contacts.
From: Local cation-tuned reversible single-molecule switch in electric double layer
a Schematic of the interfacial model of carboxylic acids molecules with SMe adsorbed on Au(111) surface at different gate potentials probed by STM-BJ and Raman spectroscopy. PZC, the potential of zero charge. The optimized structures of (b) deprotonated 4-MTBA with COO− on Au(111), c protonated 4-MTBA with COOH on Au(111), d deprotonated 4-MTBA with COO− on 25H2O/Au(111) and e deprotonated 4-MTBA with COO− on Na-25H2O/Au(111).
