Fig. 4: Potential-dependent molecular structures at Au(111)/electrolyte interfaces.
From: Local cation-tuned reversible single-molecule switch in electric double layer
Potential-dependent Raman spectra obtained at Au(111) substrate in 50 mM a HClO4, b NaClO4, and c Ca(ClO4)2 aqueous solution contain 0.1 mM 4-MTBA. d Schematic of interfacial 4-MTBA transforms on different charge states of Au(111) surface. e The plot of normalized Raman band intensities of νs(COO−Ca2+) and νs(COO−), and the conductance peak intensities against the applied potentials of Au (111) substrate. Error bars represent standard deviations obtained from Gaussian fits of conductance peak intensities and Raman intensities.
