Pump-Probe Laser Photolytic Fragmentation Fluorescence Spectrometry of Isomeric Alkenes

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Abstract:

The two-laser "pump-probe" photolytic fragmentation fluorescence spectrometry of three octenes and two nonenes is described. Probe-laser-induced C2 fluorescence (Deslandres-d'Azambuja system, C 1II g , → A 1II H ) is detected. The relative C2 fluorescence intensity and spectral patterns exhibited by each alkene are strongly dependent on the probe-laser wavelength. The dependence of the fragment fluorescence intensity on the probe-laser fluence implies that the "probe" laser induces photofragmentation of intermediate species produced by the "photolysis" laser.

Keywords: Fluorescence; Laser spectroscopy; Nonene; Octene; Photofragmentation

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702944924754

Affiliations: 1: Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600; present address: Department of Chemistry, University of Georgia, Athens, GA 30602 2: Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600

Publication date: May 1, 1994

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