Xl. Wu et al., SCANNING-TUNNELING-MICROSCOPY AND HIGH-RESOLUTION TRANSMISSION ELECTRON-MICROSCOPY OF C16H33-Q3CNQ, HEXADECYLQUINOLINIUM TRICYANOQUINODIMETHANIDE, Synthetic metals, 57(1), 1993, pp. 3836-3841
Scanning tunneling microscopy (STM) of a Langmuir-Schaefer (LS) monola
yer film of hexadecylquinolinium tricyanoquinodimethanide (C16H33-Q3CN
Q, 3) on graphite shows atomic resolution: the image is ascribed to th
e atoms in the dicyanomethylene ''swallowtail'' end of the molecule. T
he molecule is probably twisted about 20-degrees from the normal to th
e graphite surface. High-resolution transmission electron microscopy (
HRTEM) of a LS monolayer of 3 on a Cu grid shows a spacing of 18 A bet
ween well-defined layers, and a pseudo-hexagonal pattern.