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"Photoinduced conversion of silver
nanospheres to nanoprisms," by
Rongchao Jin, YunWei Cao, Chad A. Mirkin, K.L. Kelly, George C. Schatz, and
J.G. Zheng, Science, 294(5548): 1901-3, 30 November 2001.
[Authors' affiliations: Northwestern
University, Evanston, IL]
Abstract: "A photoinduced method
for converting large quantities of silver nanospheres into triangular
nanoprisms is
reported. The photo-process has been characterized by time-dependent
ultraviolet-visible spectroscopy and transmission electron microscopy,
allowing for the observation of several key intermediates in and
characteristics of the conversion process. This light-driven process results
in a colloid with distinctive optical properties that directly relate to the
nanoprism shape of the particles. Theoretical calculations coupled with
experimental observations allow for the assignment of the nanoprism plasmon
bands and for the first identification of two distinct quadrupole plasmon
resonances for a nanoparticle. Unlike the spherical particles they are derived
from that Rayleigh tight-scatter in the blue, these nanoprisms exhibit
scattering in the red, which could be useful in developing multicolor
diagnostic labels on the basis not only of nanoparticle composition and size
but also of shape."
This 2001 report from Science was
cited 15 times in current journal articles indexed in the
Thomson ISI database during July-August 2003. Only two other chemistry papers
published in the last two years, aside from reviews, recorded a greater number
of citations during that two-month period. Prior to the most recent bimonthly
count, citations to the paper have accrued as follows:
May-June 2003: 9 citations
March-April 2003: 10
January-February 2003: 9
November-December 2002: 13
September-October 2002: 8
July-August 2002: 4
May-June 2002: 2
March-April 2002: 2
Total citations to date: 72
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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