Abstract

The electrical rectification by a Langmuir‐Blodgett monolayer of γ‐hexadecylquinolinium tricyanoquinodimethanide, C16H33Q‐3CNQ, 1 has been verified between Al electrodes, then Au electrodes: this is due to the asymmetry of the molecule, and the interplay between the zwitterionic ground state D+‐π‐A− and the less dissociated first electronic excited state D0‐π‐A0. Two new rectifers have been found. The first, 2,6‐di[dibutylamino‐phenylvinyl]‐1‐butylpyridinium iodide, (Bu2NφV)2BuPy+I−, 2 is an interionic rectifier which uses the reverse charge transfer between the iodide ion and the pyridinium ring. The second is dimethylanilinoaza[C60]fullerene, DMAn‐NC60, 3, for which incredibly high currents (up to 1 Ampere / 0.283 mm2) and high rectification ratios (up to 20,000) are seen, probably because of the formation of Au stalagmites within the monolayer

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