The Effect of Substituents on Molecular Electronic Junctions

Authors: Matsunaga, Nikita¹; Sohlberg, Karl²

Source: Journal of Nanoscience and Nanotechnology, Volume 2, Number 6, December 2002 , pp. 659-667(9)

Publisher: American Scientific Publishers

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Abstract:

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.

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

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2002.150

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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