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The Effect of Substituents on Molecular Electronic Junctions

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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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Keywords: AB INITIO CALCULATIONS; ELECTRONIC STRUCTURE; MOLECULAR ELECTRONICS; NEGATIVE DIFFERENTIAL RESISTANCE

Document Type: Research Article

Affiliations: 1: Department of Chemistry and Biochemistry, Long Island University, Brooklyn, New York, USA 2: Department of Chemistry, Drexel University, Philadelphia, Pennsylvania, USA

Publication date: 2002-12-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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