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Infrared Spectroscopic Evidence for Protonated Water Clusters Forming Nanoscale Cages

Mitsuhiko Miyazaki, Asuka Fujii, Takayuki Ebata and Naohiko Mikami
Science
New Series, Vol. 304, No. 5674 (May 21, 2004), pp. 1134-1137
Stable URL: http://www.jstor.org/stable/3836870
Page Count: 4
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Infrared Spectroscopic Evidence for Protonated Water Clusters Forming Nanoscale Cages
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Abstract

Size-dependent development of the hydrogen bond network structure in large-sized clusters of protonated water, $H^+(H_{2}O)_n$ (n = 4 to 27), was probed by infrared spectroscopy of OH stretches. Spectral changes with cluster size demonstrate that the chain structures at small sizes (n [LESS-THAN OR EQUIVALENT TO] 10) develop into two-dimensional net structures (~10 < n < 21), and then into nanometer-scaled cages ($n \geq 21$).

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