Vibrational energy relaxation in a molecular monolayer measured by picosecond sum spectroscopy

Alex Harris, N. J. Levinos

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Direct picosecond time-resolved measurements of vibrational energy relaxation for a molecular adsorbate at a bulk metal surface were made. Vibrational energy relaxation from ν=1 to ν==0 for C-H stretching modes of the terminal methyl group in a Cd stearate Langmuir-Blodgett monolayer on an evaporated silver film was measured using infrared-visible sum spectroscopy to dynamically probe vibrational level populations. Multicomponent decay processes with lifetimes of 3 ps to >1 ns indicate complex intramolecular vibrational energy transfer processes in these ordered monolayer films, which may be different in related polymer and molecular liquid systems.

Original languageEnglish
Pages (from-to)66-72
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - Aug 15 1989

ASJC Scopus subject areas

  • Applied Mathematics
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Computer Science Applications

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