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Conductivities have been measured for diaminoacenes with benzene, naphthalene, and anthracene rings. The conductivities were strong functions of the placement of the amino group contact points for the gold electrodes. There was good correlation with quantum-mechanical theory, and with the stabilities of the related mono- and dications of the molecules. It is proposed that some electron abstraction by the drain precedes electron donation by the source with these electron-rich systems.
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