Single molecule vibrational spectroscopy and microscopy:Cu(II)etioperophyrin-I on Cu(001)

摘要

A scanning tunneling microscope was used to perform inelastic electron tunneling spectroscopy on single Cu(II) etioperopyrin-I molecules. The resulting vibrational spectra showed an increase in ac tunneling conductance at 359 mV.This change was attributed to the vibrational excitation of the methene bridge C-H stretchmode. Vibrational microscopy was used to image the spatial distribution of the inelastic tunneling channels involved in this excitation.