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Whence Molecular Electronics?

Flood, Amar H. and Stoddart, J. Fraser and Steuerman, David W. and Heath, James R. (2004) Whence Molecular Electronics? Science, 306 (5704). pp. 2055-2056. ISSN 0036-8075.

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The drive toward yet further miniaturization of silicon-based electronics has led to a revival of efforts to build devices with molecular-scale components. The field of molecular electronics is teeming with results, rationalizations, and speculations [HN1]. Some claims may have been exaggerated, but news stories of a crisis in the field (1) are premature. Reports of passive molecular electronics devices, such as tunnel junctions and rectifiers, as well as of active devices, for example, single-molecule transistors and molecular switch tunnel junctions, have withstood scientific scrutiny. Simple molecular electronic devices usually consist of organic molecules sandwiched between conducting electrodes. According to early predictions, such devices could show electron tunneling (2) [HN2] or one-way flow of current (rectification) [HN3] through the molecule (3). In most tunneling junctions, linear alkanes are sandwiched between metal electrodes. Measurements over the past 25 years (4, 5) have largely validated McConnell's prediction (2) that the tunnel current depends exponentially on the length of the molecules between conducting electrodes [HN4]. In rectifiers, a molecule composed of an electron donor, a bridge, and an electron acceptor is extended between two electrodes (see the first figure, top panel). Experiments (6, 7) have again validated the early prediction by Aviram and Ratner (3) [HN5].

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Stoddart, J. Fraser0000-0003-3161-3697
Heath, James R.0000-0001-5356-4385
Additional Information:© 2004 American Association for the Advancement of Science.
Issue or Number:5704
Record Number:CaltechAUTHORS:20190513-155141637
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Official Citation:Whence Molecular Electronics? BY AMAR H. FLOOD, J. FRASER STODDART, DAVID W. STEUERMAN, JAMES R. HEATH. SCIENCE 17 DEC 2004 : 2055-2056; doi: 10.1126/science.1106195
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95456
Deposited By: Tony Diaz
Deposited On:14 May 2019 00:20
Last Modified:03 Oct 2019 21:13

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