What's New in Research: January 19, 2004
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"Reproducible measurement of single-molecule conductivity," by X.D. Cui and 9 others, Science,
294(5542): 571-4, 19 October 2001.

[Authors' affiliations: Arizona State University, Tempe; Motorola Inc., Tempe, AZ]

Abstract: "A reliable method has been developed for making through-bond electrical contacts to molecules.
Current-voltage curves are quantized as integer multiples of one fundamental curve, an observation used to identify
single-molecule contacts. The resistance of a single octanedithiol molecule was 900 +/- 50 megohms, based on
measurements on more than 1000 single molecules. In contrast, nonbonded contacts to octanethiol monolayers were at least four orders of magnitude more resistive, less reproducible, and had a different voltage dependence, demonstrating that the measurement of intrinsic molecular properties requires chemically bonded contacts."

This 2001 report from Science was cited 20 times in current journal articles indexed by Thomson ISI during
September-October 2003. Its citation total during that two-month period made it the third-most-cited chemistry
paper (excluding reviews) published in the last two years. Prior to the most recent bimonthly count, citations to
the paper have accrued as follows:

Total citations to date: 106

Related information:
View the top 10 scientists in Chemistry for the period of January 1, 1993 - October 31, 2003

SOURCE: Hot Papers Database (Included with a subscription to the ISI print newsletter Science Watch^®, available from the ISI Research Services Group. Packaged on a CD-ROM that is mailed with each Science Watch issue, the Hot Papers Database contains data on hundreds of highly cited papers published during the last two years. User interface permits searching by author, organization, journal, field, and more. Total citations, as well as citations accrued during successive bimonthly periods, can be assessed and graphed. An updated CD containing the most recent bimonthly data is mailed with every new issue of Science Watch, six times a year. The CD also includes an electronic version of the Science Watch issue in HTML format, for personal desktop access.)

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