Other
Scientific paper
Jun 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010mss..confemh15w&link_type=abstract
"International Symposium On Molecular Spectroscopy, 65th Meeting, Held 21-25 June, 2010 at Ohio State University. htt p://molspe
Other
Mini-Symposium: Metal Containing Molecules
Scientific paper
Time resolved IR spectroscopy was used to characterize the vibrational energy relaxation (VER) dynamics of the CN stretching bands of aqueous molecular metal cyanides and networked metal cyanides, such as Prussain Blue, in reverse micelles. The vibrational and rotational relaxation dynamics of the CN stretching bands near 2000 cm-1 for aqueous molecular cyanides Au(CN)2-, Ni(CN)42-, Pt(CN)42-, Co(CN)63-, Mn(CN)42-, and Ru(CN)64- have been investigated using ultrafast pump-probe spectroscopy. While the spectra and dynamics of Ru(CN)64- are similar to those previously reported for ferrocyanide, VER times are significantly longer (>30 ps) in the other molecules. Mn(CN)63- represents an intermediate case with a relaxation time of about 15 ps in water. The VER dynamics extend and reinforce the established trends of metal cyanide CN band frequencies and intensities. Prussian Blue and its ruthenium analog were also studied using visible pump-IR probe and IR pump-IR probe spectroscopy. The VER dynamics are similar to the monometal cyanides and there is evidence for CN band excitation following back electron transfer based on the comparison of visible and infrared pump results.
Brown Douglas J.
Houchins Cassidy
Owrutsky Jeffrey C.
Weidinger Daniel
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