Infrared spectroscopic evidence for protonated water clusters forming nanoscale cages.
Size-dependent development of the hydrogen bond network structure in large sized clusters of protonated water, H+(H2O)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, similar 10) develop into two-dimensional net structures (approximately 10 < n < 21), and then into nanometer-scaled cages (n >/= 21).
Miyazaki
Mitsuhiko
M
Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan.
Fujii
Asuka
A
Ebata
Takayuki
T
Mikami
Naohiko
N