TY - JOUR
T1 - Time-resolved SFG study of formate on a Ni( 1 1 1 ) surface under irradiation of picosecond laser pulses
AU - Noguchi, H.
AU - Okada, T.
AU - Onda, K.
AU - Kano, S. S.
AU - Wada, A.
AU - Domen, K.
N1 - Funding Information:
This work has been supported by CREST (Core Research for Evolution Science and Technology) of Japan Science and Technology Corporation (JST). H.N. acknowledges the Japan Society for the Promotion of Science (JSPS) for a fellowship.
PY - 2003/3/20
Y1 - 2003/3/20
N2 - Time-resolved sum-frequency generation spectroscopy was carried out on a deuterated formate (DCOO) adsorbed on Ni(1 1 1) surface to investigate the surface reaction dynamics under instantaneous surface temperature jump induced by the irradiation by picosecond laser pulses. The irradiation of pump pulse (800 nm) caused the rapid intensity decrease of both CD and OCO stretching modes of bridged formate on Ni(1 1 1). Different temporal behaviors of intensity recovery between these two vibrational modes were observed, i.e., CD stretching mode recovered faster than OCO. This is the first result to show that the dynamics of adsorbates on metals strongly depends on the observed vibrational mode. From the results of temperature and pump fluence dependence, we concluded that the observed intensity change was not due to the decomposition or desorption, but was induced by a non-thermal process.
AB - Time-resolved sum-frequency generation spectroscopy was carried out on a deuterated formate (DCOO) adsorbed on Ni(1 1 1) surface to investigate the surface reaction dynamics under instantaneous surface temperature jump induced by the irradiation by picosecond laser pulses. The irradiation of pump pulse (800 nm) caused the rapid intensity decrease of both CD and OCO stretching modes of bridged formate on Ni(1 1 1). Different temporal behaviors of intensity recovery between these two vibrational modes were observed, i.e., CD stretching mode recovered faster than OCO. This is the first result to show that the dynamics of adsorbates on metals strongly depends on the observed vibrational mode. From the results of temperature and pump fluence dependence, we concluded that the observed intensity change was not due to the decomposition or desorption, but was induced by a non-thermal process.
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U2 - 10.1016/S0039-6028(02)02630-4
DO - 10.1016/S0039-6028(02)02630-4
M3 - Conference article
AN - SCOPUS:0037456707
VL - 528
SP - 183
EP - 188
JO - Surface Science
JF - Surface Science
SN - 0039-6028
IS - 1-3
T2 - DIET -9
Y2 - 1 June 2002 through 4 June 2002
ER -