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

Alex Harris; N. J. Levinos

doi:10.1117/12.951617

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

Alex Harris, N. J. Levinos

Brookhaven National Laboratory

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	66-72
Number of pages	7
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	1056
DOIs	https://doi.org/10.1117/12.951617
Publication status	Published - 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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