Details
| Original language | English |
|---|---|
| Pages (from-to) | 752-760 |
| Number of pages | 9 |
| Journal | Journal of Chemical Physics |
| Volume | 112 |
| Issue number | 2 |
| Publication status | Published - 8 Jan 2000 |
| Externally published | Yes |
Abstract
Structural and energetic properties of the adducts formed by adsorbing methanol onto size-selected gold clusters are investigated by infrared photodissociation of trapped Au+n(CH3OH)m, n = 1 - 10,15 and m = 1 - 3. The excitation of vibrational modes of methanol leads to the desorption of neutral molecules which is monitored by time-of-flight mass spectrometry. Spectra are obtained by measuring the fragment ion intensity as a function of photon energy. The C-O stretching vibration of adsorbed methanol changes discontinuously with cluster size. By comparison with Car-Parrinello calculations this change is traced back to the dimensionality of the gold clusters. The number of photons necessary for the desorption of methanol molecules provides an estimate of the respective separation energies.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Journal of Chemical Physics, Vol. 112, No. 2, 08.01.2000, p. 752-760.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The interaction of gold clusters with methanol molecules
T2 - Infrared photodissociation of mass-selected Au+n(CH3OH)m
AU - Dietrich, G.
AU - Krückeberg, S.
AU - Lützenkirchen, K.
AU - Schweikhard, L.
AU - Walther, Clemens
PY - 2000/1/8
Y1 - 2000/1/8
N2 - Structural and energetic properties of the adducts formed by adsorbing methanol onto size-selected gold clusters are investigated by infrared photodissociation of trapped Au+n(CH3OH)m, n = 1 - 10,15 and m = 1 - 3. The excitation of vibrational modes of methanol leads to the desorption of neutral molecules which is monitored by time-of-flight mass spectrometry. Spectra are obtained by measuring the fragment ion intensity as a function of photon energy. The C-O stretching vibration of adsorbed methanol changes discontinuously with cluster size. By comparison with Car-Parrinello calculations this change is traced back to the dimensionality of the gold clusters. The number of photons necessary for the desorption of methanol molecules provides an estimate of the respective separation energies.
AB - Structural and energetic properties of the adducts formed by adsorbing methanol onto size-selected gold clusters are investigated by infrared photodissociation of trapped Au+n(CH3OH)m, n = 1 - 10,15 and m = 1 - 3. The excitation of vibrational modes of methanol leads to the desorption of neutral molecules which is monitored by time-of-flight mass spectrometry. Spectra are obtained by measuring the fragment ion intensity as a function of photon energy. The C-O stretching vibration of adsorbed methanol changes discontinuously with cluster size. By comparison with Car-Parrinello calculations this change is traced back to the dimensionality of the gold clusters. The number of photons necessary for the desorption of methanol molecules provides an estimate of the respective separation energies.
UR - http://www.scopus.com/inward/record.url?scp=18344410953&partnerID=8YFLogxK
U2 - 10.1063/1.480718
DO - 10.1063/1.480718
M3 - Article
AN - SCOPUS:18344410953
VL - 112
SP - 752
EP - 760
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
IS - 2
ER -