Laser-induced Matrix Isolation Fluorescence Spectrometry of Methyl and Methoxyl Derivatives of Benzo[a]pyrene

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The narrow bandwidth radiation of a tunable dye laser is used to excite selectively the quasilinear absorption bands exhibited by polycyclic aromatic hydrocarbons (PAH's) isolated in vapor-deposited n-alkane matrices at 15 K. The analytical utility of matrix isolation Shpol'skii fluorometry for the resolution of multicomponent PAH samples is investigated, using nonpolar derivatives of benzo[a]pyrene as prototypes. Quantitative aspects, including the absence of aggregation and energy-transfer phenomena, also are discussed.

Keywords: Fluorescence; Lasers, dye; Matrix isolation

Document Type: Research Article


Affiliations: Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996

Publication date: January 1, 1983

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