The Effect of Substituents on Molecular Electronic Junctions
Previous reports have demonstrated that molecular electronic junctions exhibiting negative differential resistance show a marked substituent effect. We show that this substituent effect correlates with stability of the anionic form of the junction molecule. A sufficiently stable anion gives rise to a double potential barrier to electron transport across the molecular junction. The effect of thermal motion of the junction molecule on the electron transport is also considered.
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Document Type: Research Article
Publication date: 2002-12-01
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