Complex salts of TCNQ with substituted phenyl pyridines and their characterization by scanning tunneling microscopy

Article abstract of DOI:10.1002/bbpc.19930971110

New conductive complex salts of tetracyanoquinodimethane (TCNQ) with substituted phenylpyridines have been prepared and characterized by optical microscopy, conductivity measurements, X-ray powder diagrams and scanning tunneling microscopy (STM). The molecular stacking, which is responsible for the one-dimensional conductivity, was revealed from the diffraction data and STM images. The analysis of the STM images was based on the results obtained on a model compound, the complex salt of TCNQ and quinolinium. Although in STM the surface partial electron density is measured, several crystallographic parameters of the molecular arrangement have been determined from these images.