"Chemically derived, ultrasmooth graphene nanoribbon
semiconductors," by Xiaolin Li, Xinran Wang, Li Zhang, Sangwon
Lee, and Hongjie Dai, Science, 319(5867): 1229-32, 29 February
2008.
[Authors' affiliation: Stanford University, CA]
Abstract: "We developed a chemical route to produce
graphene nanoribbons GNR)with width below 10 nanometers, as well as single
ribbons with varying widths along their lengths or containing
lattice-defined graphene junctions for potential molecular electronics. The
GNRs were solution-phase-derived, stably suspended in solvents with
noncovalent polymer functionalization, and exhibited ultrasmooth edges with
possibly well-defined zigzag or armchair-edge structures. Electrical
transport experiments showed that, unlike single-walled carbon nanotubes,
all of the sub-10-nanometer GNRs produced were semiconductors and afforded
graphene field effect transistors with on-off ratios of about 10(7) at room
temperature."
This 2008 report from Science was cited 34
times in current journal articles indexed by Clarivate
during January-February 2009. With that two-month tally, the paper
currently stands as the fourth-most-cited chemistry paper published in the
last two years, not counting reviews. The paper also earns distinction as
the highest-placed report in the upper reaches of the Chemistry Top Ten
not dealing with iron-based superconductors, a topic that has had
a lock on chemistry's hottest since last autumn. Prior to the most recent
bimonthly count, citations to Li et al. have accrued as follows:
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