The Use of a Scanning Tunneling Microscope to Estimate Film Thickness and Conductivity of an Electrochemically Produced Poly‐1‐aminoanthracene Film

An electronically conductive poly-1-aminoanthracene (PAA) film was prepared electrochemically on Pt, Au, and C substrates by cycling the potential between -0.40 and +0.80 V in MeCN/BAPF 6 solutions. Adding pyridine to the solution resulted in a marked increase in the growth rate of the polymer film, as indicated by a large increase of faradaic current. A new scanning tunneling microscopy (STM) approach is also presented to determine film thickness and film conductivity through measuring the tip current vs, tip displacement