Abstract
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 <i>n</i>-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[<i>a</i>]pyrene as prototypes. Quantitative aspects, including the absence of aggregation and energy-transfer phenomena, also are discussed.
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