Molecular engineering and measurements to test hypothesized mechanisms in single molecule conductance switching

被引：0

作者：

Moore, Amanda M. ^{[1
]}

Dameron, Arrelaine A. ^{[1
]}

Mantooth, Brent A. ^{[1
]}

Smith, Rachel K. ^{[1
]}

Fuchs, Daniel J. ^{[1
]}

Ciszek, Jacob W. ^{[2
]}

Maya, Francisco ^{[2
]}

Yao, Yuxing ^{[2
]}

Tour, James M. ^{[2
]}

Weiss, Paul S. ^{[1
]}

机构：

[1] Department of Chemistry, Pennsylvania State University, University Park, PA 16802-6300, United States

[2] Department of Chemistry, Center for Nanoscale Science and Technology, Rice University, Houston, TX 77005, United States

来源：

Journal of the American Chemical Society | 1600年 / 128卷 / 06期

关键词：

Six customized phenylene-ethynylene-based oligomers have been studied for their electronic properties using scanning tunneling microscopy to test hypothesized mechanisms of stochastic conductance switching. Previously suggested mechanisms include functional group reduction; functional group rotation; backbone ring rotation; neighboring molecule interactions; bond fluctuations; and hybridization changes. Here; we test these hypotheses experimentally by varying the molecular designs of the switches; the ability of the molecules to switch via each hypothetical mechanism is selectively engineered into or out of each molecule. We conclude that hybridization changes at the molecule-surface interface are responsible for the switching we observe. © 2006 American Chemical Society;

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摘要：

Journal article (JA)

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页码：1959 / 1967