Vibrational energy relaxation of methyl thiolate/Ag(111) by picosecond IR-visible sum spectroscopy

Alex Harris, L. Rothberg, L. H. Dubois, N. J. Levinos, L. Dhar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Vibrational energy relaxation of the symmetric C-H stretching mode of methyl thiolate on a Ag(111) surface is measured by picosecond infrared-visible sum frequency generation. Vibrational relaxation lifetime components of Approximately 3 ps and 63 ps are observed at 300 K. The long lifetime component shows a moderate temperature dependence. Both population relaxation components are assigned to intramolecular energy transfer on the basis of comparisons with other measurements and the predicted temperature dependence of intramolecular relaxation rates. Direct energy transfer to electronic or vibrational degrees of freedom in the substrate is not found to be important for this vibrational mode.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsS.Nicolas Nogar
PublisherPubl by Int Soc for Optical Engineering
Pages99-104
Number of pages6
Volume1208
ISBN (Print)0819402494
Publication statusPublished - 1990
EventLaser Photoionization and Desorption Surface Analysis Techniques - Los Angeles, CA, USA
Duration: Jan 18 1990Jan 19 1990

Other

OtherLaser Photoionization and Desorption Surface Analysis Techniques
CityLos Angeles, CA, USA
Period1/18/901/19/90

Fingerprint

Energy transfer
Spectroscopy
energy transfer
spectroscopy
Stretching
life (durability)
temperature dependence
molecular relaxation
Infrared radiation
Temperature
energy
vibration mode
Substrates
degrees of freedom
electronics

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Harris, A., Rothberg, L., Dubois, L. H., Levinos, N. J., & Dhar, L. (1990). Vibrational energy relaxation of methyl thiolate/Ag(111) by picosecond IR-visible sum spectroscopy. In S. N. Nogar (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 1208, pp. 99-104). Publ by Int Soc for Optical Engineering.

Vibrational energy relaxation of methyl thiolate/Ag(111) by picosecond IR-visible sum spectroscopy. / Harris, Alex; Rothberg, L.; Dubois, L. H.; Levinos, N. J.; Dhar, L.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / S.Nicolas Nogar. Vol. 1208 Publ by Int Soc for Optical Engineering, 1990. p. 99-104.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Harris, A, Rothberg, L, Dubois, LH, Levinos, NJ & Dhar, L 1990, Vibrational energy relaxation of methyl thiolate/Ag(111) by picosecond IR-visible sum spectroscopy. in SN Nogar (ed.), Proceedings of SPIE - The International Society for Optical Engineering. vol. 1208, Publ by Int Soc for Optical Engineering, pp. 99-104, Laser Photoionization and Desorption Surface Analysis Techniques, Los Angeles, CA, USA, 1/18/90.
Harris A, Rothberg L, Dubois LH, Levinos NJ, Dhar L. Vibrational energy relaxation of methyl thiolate/Ag(111) by picosecond IR-visible sum spectroscopy. In Nogar SN, editor, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 1208. Publ by Int Soc for Optical Engineering. 1990. p. 99-104
Harris, Alex ; Rothberg, L. ; Dubois, L. H. ; Levinos, N. J. ; Dhar, L. / Vibrational energy relaxation of methyl thiolate/Ag(111) by picosecond IR-visible sum spectroscopy. Proceedings of SPIE - The International Society for Optical Engineering. editor / S.Nicolas Nogar. Vol. 1208 Publ by Int Soc for Optical Engineering, 1990. pp. 99-104
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